Windows error 0xFFFFFFFF, -1

Detailed Error Information

HRESULT analysis[1]

FlagsSeverityFailure
Reserved (R)true
OriginCustomer

This code was defined by a third party software company, and may mean different things for different software. Contact the software author for more information about this error.

NTSTATUStrue
Reserved (X)true
FacilityCode4095 (0xfff)
Error Code65535 (0xffff)

Questions

82votes
5answers

Signed/unsigned comparisons

I'm trying to understand why the following code doesn't issue a warning at the indicated place. //from limits.h #define UINT_MAX 0xffffffff /* maximum unsigned int value */ #define INT_MAX 2147483647 /* maximum (signed) int value */ /* = 0x7fffffff */ int a = INT_MAX; //_int64 a = INT_MAX; // makes [...] read more
c++
visual-studio-2005
comparison
unsigned
signed
67votes
8answers

android.content.res.Resources$NotFoundException: Unable to find resource ID #0xffffffff

I hate posting code, and asking why it doesn't work, but I'm at a loss right now. I've tried to run the following class below, and I get an exception in logcat which I can't explain. Even a google search yields little results. Maybe I just don't understand the ecosystem, [...] read more
android
android-viewpager
52votes
9answers

The real difference between "int" and "unsigned int"

int: The 32-bit int data type can hold integer values in the range of −2,147,483,648 to 2,147,483,647. You may also refer to this data type as signed int or signed. unsigned int : The 32-bit unsigned int data type can hold integer values in the range of 0 to 4,294,967,295. [...] read more
c
24votes
8answers

Remove padding in Flutter Container > FlatButton

I am looking to remove the default margin of the FlatButton but can't seem to set/override it. buttons with padding [https://i.stack.imgur.com/auKR7.png] Column(children: <Widget>[ Container( children: [ FractionallySizedBox( widthFactor: 0.6, child: FlatButton( color: Color(0xFF00A0BE), textColor: Color(0xFFFFFFFF), child: Text('LOGIN', style: TextStyle(letterSpacing: 4.0)), shape: RoundedRectangleBorder(side: BorderSide.none)))), Container( margin: const EdgeInsets.only(top: 0.0), child: FractionallySizedBox( [...] read more
flutter
20votes
1answer

Setting up a Bluetooth PAN

I am trying to create a Bluetooth PAN between two devices where I can access REST based web services over the Bluetooth connection. I have had some success with various proof of concepts (both Bluetooth legacy and Bluetooth Smart) but I am having problems trying to create a Group network [...] read more
linux
networking
wireless-networking
bluetooth
pan
19votes
3answers

REPNZ SCAS Assembly Instruction Specifics

I am trying to reverse engineer a binary and the following instruction is confusing me, can anyone clarify what exactly this does? =>0x804854e: repnz scas al,BYTE PTR es:[edi] 0x8048550: not ecx Where: EAX: 0x0 ECX: 0xffffffff EDI: 0xbffff3dc ("aaaaaa\n") ZF: 1 I see that it is somehow decrementing ECX by [...] read more
assembly
x86
reverse-engineering
10votes
3answers

RISC-V build 32-bit constants with LUI and ADDI

> LUI (load upper immediate) is used to build 32-bit constants and uses the U-type format. LUI places the U-immediate value in the top 20 bits of the destination register rd, filling in the lowest 12 bits with zeros. I found this in manual, but if I want to move [...] read more
riscv
10votes
3answers

Java Integer.MAX_VALUE vs Kotlin Int.MAX_VALUE

I noticed, one interesting thing. Java's Integer.MAX_VALUE is 0x7fffffff (2147483647) Kotlin's Int.MAX_VALUE is 2147483647 but if you write in Java: int value = 0xFFFFFFFF; //everything is fine (but printed value is '-1') in Kotlin: val value: Int = 0xFFFFFFFF //You get exception The integer literal does not conform to the [...] read more
java
kotlin
9votes
2answers

Is gcc reordering local variables at compilation time?

I'm currently reading (for the second time) "Hacking : The Art of Exploitation" and have stumbled on something. The book suggests two different ways to exploit these two similar programs : auth_overflow and auth_overflow2 In the first one, there is a password checking function layed out like this int check_authentication(char [...] read more
c
gcc
gdb
reverse-engineering
buffer-overflow
9votes
5answers

How to dump memory to a file in gdb (osx)? Need to rescue my work

I need to know how I can dump memory in Safari.app, to a file. I've entered gdb attach 6741 (my safari PID). Now what? I tried searching for help on gdb on google, but I couldn't find anything that told me what to do, even when searching for "how to [...] read more
macos
gdb
9votes
1answer

Cisco ASA Site-to-Site VPN Dropping

I have three sites, Toronto (1.1.1.1), Mississauga (2.2.2.2) and San Francisco (3.3.3.3). All three sites have ASA 5520. All the sites are connected together with two site-to-site VPN links between each other location. My issue is that the tunnel between Toronto and San Francisco is very unstable, dropping every 40 [...] read more
cisco
cisco-asa
cisco-vpn
8votes
1answer

a class method named ._() function in dart?

I've seen this code can anyone please explain to me what the AppTheme._() means, as I've read about its singleton class in dart but I really can't understand how it works. class AppTheme { AppTheme._(); static const Color notWhite = Color(0xFFEDF0F2); static const Color nearlyWhite = Color(0xFFFEFEFE); static const Color [...] read more
flutter
dart
8votes
3answers

Corrupted NTFS Drive showing multiple unallocated partitions

My external hdd with a single NTFS partition was accidentaly plugged out (kids!)... and is now corrupted. Iv tried running ntfsfix - with no luck - output below.. When I look at the disk under disk management in Windows 7 it shows up as having 5 partitions 2 of which [...] read more
external-hard-drive
ntfs
filesystem-corruption
8votes
2answers

Strongswan (IKEv2) connection established, but no traffic routing

I've seen this sort of question posted a few times before, but so far, none of them have solved my issue. I'm trying to set up an IKEv2 VPN on my Ubuntu Server to use with my Windows Phone using Strongswan. The connection seems to be set up correctly, but [...] read more
ubuntu
ipsec
strongswan
vpn
7votes
3answers

Disable IPv6 Loopback on Windows 7 64 Bit

I have a Windows 7 64 Bit machine, and I cannot find a way to disable the IPv6 Loopback. I looked at the article at How to disable IP version 6 or its specific components in Windows and shows how to set HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\DisabledComponents to various values – but none of [...] read more
windows-7
networking
7votes
3answers

SQL Server 2012 with account NT Service\MSSQLSERVER access is denied in domain

A few months ago we installed SQL Server 2012 in Windows 2008 R2 under the virtual account "NT Service\MSSQLSERVER", all good. A few days ago, one of the admins of the IT dept installed Full Text Search component to the SQL Server 2012 (the problem is he could not recall [...] read more
sql-server
sql-server-2008
domain
permissions
6votes
1answer

FreeBSD IP aliases in different subnets and default outgoing IP address

I have a FreeBSD VPS that until recently had assigned 3 public ip addresses in a /29 subnet. When making outgoing connections, the IP address used was always the non aliased one ".20", however now I have added another block of 3 ip addresses in a different /29 subnet and [...] read more
networking
freebsd
ip-aliasing
6votes
1answer

ASA site-to-site IPSec vpn to linux ipsec-tools endpoints stops working after a random period of time

We swapped to ASA's over the weekend, and we replaced our VPN infrastructure which was previously based on openvpn and are now using IPSec between our ASA 5520's and our other sites that have linux (CentOS) routers. The VPNs connect just fine, but after a period of time the connections [...] read more
linux
cisco
cisco-asa
ipsec
racoon
5votes
3answers

Walking the NTFS Change Journal on Windows 10

I'm trying to read the NTFS Change Journal but I've noticed that all the example code I can find fails on Windows 10, even though it works on Windows 7. For example, Microsofts own example Walking a Buffer of Change Journal Records works on Windows 7 but when I run [...] read more
winapi
visual-c++
ntfs
deviceiocontrol
5votes
1answer

My two-way trust with selective auth seems to behave opposite to a one-way trust

I'm not sure why I'm the only one running into this, I think it's a larger problem with Server 2012 and RDS protocols... With 2008 machines, you can use utilize a one way trust to authenticate across domains with the TSGateway service, but with 2012 it breaks when running across [...] read more
authentication
windows-server-2012-r2
active-directory
5votes
1answer

Enable TLS 1.2 in Windows Server 2012 running Exchange 2013 via IIS 8.0

I got some issues getting the TLS 1.2 protocol running on one of our Windows Server 2012 machines. I checked this using ssllabs.com by Qualys and also tested with a powershell script and the linux tool "cipherscan". The server hosts one Exchange 2013 SP1 (CU4) Server, with IIS 8.0. The [...] read more
windows-server-2012
tls
exchange-2013
5votes
2answers

OpenVPN connection works but no gateway is assigned

i try to setup openvpn on a vps and I'm able to establish a connection to the server, but the gateway isn't assigned to the client. Here are my config files: client config: client dev tun proto udp remote foo.bar 1194 resolv-retry infinite nobind persist-key persist-tun ca ca.crt cert client1.crt [...] read more
vpn
configuration
openvpn
gateway
open
4votes
2answers

Can "LL" be removed from a hard-coded integer constant, and be replaced by "static_cast<uint64_t>(...)"?

I am modifying legacy code that utilizes a "long long" (LL) data type definition for a hard-coded constant, as follows: 0xFFFFFFFFFFFFFFFFLL I trust that the LL appended to the constant guarantees that this constant will be interpreted as a long long. However, I do not want to depend on long [...] read more
c++
4votes
2answers

How do I get the version of a driver on Windows from C++

I'm looking for a programmatic way to get the version number of a driver. I want the same number that device manager shows in the driver properties for a device. Background: I have an application that talks to some custom hardware. The device driver for the custom hardware has known [...] read more
c++
windows
driver
4votes
1answer

firewall-cmd - add-forward-port don't work

I have a KVM server (host) with multiple virtual machines (guests). My goal is my host forward port 222 to port 22 of a guest running an ssh service. This works... iptables -I OUTPUT -d 0.0.0.0/0 -j ACCEPT iptables -I FORWARD -d 0.0.0.0/0 -j ACCEPT iptables -I INPUT -d 0.0.0.0/0 [...] read more
firewall
port-forwarding
iptables
forwarding
firewalld
4votes
1answer

What does the "-->" notation mean in the output of ifconfig?

I have a VPN connection set up on my OS X machine, and when I run ifconfig in the terminal I get the following response: utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500 inet 10.8.0.6 --> 10.8.0.5 netmask 0xffffffff Can someone help me understand what the --> symbol means? read more
networking
vpn
ifconfig
4votes
0answers

Direct3D crashes dxdiag in 32-bit but works fine in 64-bit mode

DxDiag crashes when I open it unless I bypass Direct3D. It works fine in 64-bit mode. I have a NVIDIA GeForce GT 525M, and I've tried updating (also uninstalling, reinstalling) my drivers. I've also tried doing the same with DirectX. How can I enable Direct3D for 32-bit? I've tried enabling [...] read more
windows-7
directx
direct3d
4votes
2answers

Is my mac hacked? Found weird things

I apologize for posting in length, but I thought being complete would be of more value: 20120822, my browser was not resolving a domain so I went into my terminal to check and lo-and-behold! I find these crazy commands remnant: mac-mini$ su Password: sh-3.2# sudo /Applications/TextEdit.app/Contents/MacOS/TextEdit /etc/hosts Mar 22 23:07:08 [...] read more
mac-mini
logmein
4votes
1answer

disabling ipv6 on windows 7 64bit

not sure what i am missing here.. every website suggests creating this reg key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\DisabledComponents as DWORD and setting its value to 0xFFFFFFFF i've done this, but when i reboot, my NIC adapter still shows IPV6 enabled. since i have 64bit version, i also tried setting this value as QWORD. [...] read more
windows-7
ipv6
4votes
3answers

How to limit ZFS writes on NVME SSD in RAID1 to avoid rapid disk wear?

Currently I'm running Proxmox 5.3-7 on ZFS with few idling debian virtual machines. I'm using two SSDPE2MX450G7 NVME drives in RAID 1. After 245 days of running this setup the S.M.A.R.T values are terrible. SMART/Health Information (NVMe Log 0x02, NSID 0xffffffff) Critical Warning: 0x00 Temperature: 27 Celsius Available Spare: 98% [...] read more
zfs
ssd
proxmox
nvme
4votes
0answers

Block incoming traffic in bonding mode when primary interface is down

My server running on latest kernel (4.4.6) has configured a bond device (bond0) with two enslaved interfaces eth0, wlan0 with primary interface eth0. cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) Bonding Mode: fault-tolerance (active-backup) Primary Slave: eth0 (primary_reselect always) Currently Active Slave: wlan0 MII Status: up MII [...] read more
linux
iptables
firewall
bonding
4votes
0answers

Issue installing IE11

I've been using WSUS to roll out IE11, there's a few stranglers that IE11 will not install and I've started looking into. Here's what I've done. 1. Confirmed all prerequisite updates have been done. 2. I'm using the x64 bit package of ie11 and only using x64 servers and workstations. [...] read more
windows-server-2008-r2
windows-7
wsus
internet-explorer-11
4votes
1answer

System Account Logon Failures every 30 seconds

We have two Windows 2008 R2 SP1 servers running in a SQL failover cluster. On one of them we are getting the following events in the security log every 30 seconds. The parts that are blank are actually blank. Has anyone seen similar issues, or assist in tracking down the [...] read more
windows-server-2008
security
windows-event-log
failovercluster
4votes
2answers

How can I get FreeNAS to respond to libvirt shutdown requests

I have a KVM VM of FreeNAS 0.7.1 Shere (revision 5127) running on Ubuntu Server 10.04 and I'm unable to convince the VM to shutdown from the host virsh shutdown freenas I would expect this to send some ACPI? trigger to the VM and FreeNAS then do what it's told. [...] read more
ubuntu
kvm-virtualization
electrical-power
freenas
3votes
1answer

QEMU doesn't reboot my OS after resetting via the 8042 PS/2 controller

@MichaelPetch has rewritten the entire question to reduce it to a specific problem that should be easily reproduced. The original question focussed on a problem encountered doing OS development in 64-bit long mode. The code was attempting to use 8042 PS/2 controller to reboot a machine but it failed to [...] read more
assembly
x86
qemu
osdev
multiboot
3votes
4answers

Why convert 0xffffffff to decimal is -1 in C?

I thought the result would be (2**32 - 1) #include <stdio.h> int main(){ unsigned int a = 0xffffffff; printf("the size of int a %d\n",a); return 0; } but it gives me -1, any idea? read more
c
3votes
1answer

Black screen while installing Debian

I tried installing Debian with a netinstall CD-ROM on my custom-built PC. Everything is going fine until I choose any of the install options because then the screen turns black and I get no graphical feedback at all. The screen itself seems to get information though because it doesn't go [...] read more
installation
debian
3votes
2answers

Error installing IE11 - prerequisite update KB2834140

I'm trying to upgrade Internet Explorer my Windows 7 (x64) development VM from IE8 to IE11. Both the online and offline installers fail with a bland error message: enter image description here [https://i.stack.imgur.com/0dueo.png] The troubleshooter tells me nothing, but the IE11_main.log reveals: 00:04.524: INFO: Download for KB2834140 initiated. Downloading http://go.microsoft.com/fwlink/?LinkID=303935 [...] read more
windows-7
installation
internet-explorer
3votes
1answer

What can trigger a SIGPWR signal that interrupts a 'sendmsg' system call?

On a RHEL 6 host, I have a Cassandra server listening for TCP connections on localhost. In parallel, I have a client application that sends it requests. The client (C# Mono) uses sendmsg to send the serialized bytes. I consistently see the sendmsg return without having sent all requested bytes. [...] read more
linux
redhat-enterprise-linux
tcp
strace
system-calls
3votes
2answers

Sysprepped image will not complete setup

I'm having a problem installing/setting up an image. Background:I've created a Windows 7 Enterprise image (i.e. installed OS, installed applications, configured settings, etc.). Then I sysprepped it and captured/applied it with imagex (onto a computer with identical hardware as the original). When I boot up the new machine, windows starts [...] read more
windows-registry
setup
deployment
sysprep
3votes
4answers

Mac OS X: finder window keeps opening by itself and stealing focus

I have a Macbook with Mac OS X 10.4.11 here, with an annoying problem. After starting the computer and logging in, the finder keeps stealing focus. You can go back to your working app, but a minute later, it steals focus again. Even as I'm typing this message, I had [...] read more
mac
finder
focus
3votes
2answers

How to use openvpn for browsing

I'm just starting out with VPN and OpenVPN. What I understand is that I when I have a vpn connection, it's like I'm on the same network as the server. Then I should be able to connect to the server via the local address (10.8.x.x). Next to that I should [...] read more
debian
vpn
openvpn
tunnel
bridged
3votes
2answers

Something very strange with network

I have Windows 7 and I have very strange thing with my network. Some time I was connected through wireless router and my IP was 192.168.2.103, router's IP was 192.168.2.1 and some other IP was 192.168.2.100. The last I get from page "active DHCP clients" of web interface of the [...] read more
windows-7
networking
3votes
2answers

How to limit speed for every device per MAC address in the gateway via Linux command "tc"?

I have a gateway whose OS is Linux.Assume my downlink bandwidth is 100 Mbps. I want to limit the max download speed to 1Mbps for every device which uses this gateway.In other words, if there are 100 devices, every device can get 1 Mbps bandwidth in theory.I tried doing traffic [...] read more
tc
3votes
0answers

FreeBSD major update broke vpnc connectivity, incoming ESP traffic doesn't appear unencrypted on interfaces

I updated a FreeBSD box from 10.4 to 11.2-RELEASE-p4 recently and it seems to have broken the vpnc VPN connectivity. Here's the vpnc.conf:IPSec gateway 10.1.0.1 IPSec ID vpnuser IPSec secret su0hoh8liNgeiT8 Xauth username vpnuser Xauth password miuthei3Niew2ee Nat Traversal Mode none Noninteractive Following the interface configuration; em0 is the hardware [...] read more
freebsd
ipsec
cisco-vpn
vpn-client
3votes
0answers

High Performance AWS EC2 / RDS + Nginx + PHP-FPM setup

GENERAL DESCRIPTION OF THE ISSUE We're currently running an application on a PaaS type solution for PHP. Their solution is based on AWS cloud and due to the fact that their plans don't fit our scaling needs, we've decided to migrate to AWS directly the application is performing "well" ~100ms [...] read more
nginx
amazon-ec2
amazon-web-services
php-fpm
high-load
3votes
2answers

How to debug ip xfrm rules

I created ip xfrm rules on 2 machine and trying to pass traffic through the ipsec tunnel. The packet comes into the other end, encrypted, and disappears. I traced them through iptables, and here is the trace. 2015-11-27T14:50:21.442638+04:30 cfae kernel: [70234.667488] TRACE: raw:PREROUTING:policy:2 IN=eth0 OUT= MAC=00:0c:29:b7:97:49:00:0c:29:42:5b:e1:08:00 SRC=172.24.1.178 DST=10.60.60.31 LEN=128 TOS=0x00 [...] read more
ipsec
3votes
1answer

Same hardware/software, significant difference in performance

Introduction I have two sets of machines, set A and set B, with apparently the same hardware/software configuration, but with a significant difference in performance. Machines in set B are up to x4 faster than machines in set A. However, if I reboot a machine in set A, inexplicably it [...] read more
performance
hardware
3votes
1answer

Iptables u32 matching nat

I'm currently setting up IPtables to redirect certain UDP payloads to my application. Here is an example of what I have working so far: iptables -t nat -I PREROUTING -p udp -d {IPDST} --dport 27055 -m u32 --u32 '0>>22&0x3C@8=0xFFFFFFFF && 0>>22&0x3C@12=0x54536F75 && 0>>22&0x3C@16=0x72636520 && 0>>22&0x3C@20=0x456E6769 && 0>>22&0x3C@24=0x6E652051 && 0>>22&0x3C@28=0x75657279' -j [...] read more
iptables
linux-networking
3votes
2answers

CentOS reporting lower total memory compared others in AWS

I have a t2.medium instance running in AWS on the CentOS 7 AMI and I noticed in top and free it's basically reporting 3.45GiB of total memory. If I launch an instance with the AWS linux (I think I tried the RedHat one too) it reports about 4GiB of memory. [...] read more
amazon-web-services
memory
centos7
3votes
1answer

Windows 2008 R2 services not working

EDIT I spawned the Windows events logging service won't start issue to a separate question here I have a strange problem: 1. SQLAGENT won't start 2. Windows events logging service won't start Today I tried to copy a db to test some changes, and discovered that SQL server agent can't [...] read more
windows-server-2008-r2
sql-server-2008
service
windows-event-log
3votes
3answers

Setting up gateway on different subnet than IP address

My provider has a (stupid) setup where the IP address for the gateway is on a totally different IP range than the assigned IP address. They insist on doing this for whatever reason. I'm trying to get Windows Server 2012 R2 configured using a static route but have had no [...] read more
networking
routing
windows-server-2012
gateway
3votes
1answer

Packets not entering FORWARD chain

first of all, this is not an every-day routing issue. The setup is fairly complex, so let me state it before. I got a router with, lets keep it simple, 3 interfaces. eth0, eth1, eth2. eth2 is used for pppoe. eth0 & eth1 have the clients. Okay so far so [...] read more
networking
iptables
routing
policy-routing
3votes
2answers

HP P410 ADU (hpacucli) generates empty report

I'm trying to monitor hard drive's smart status. I've tried smartctl tools and HP's own hpacucli to generate ADU report. However, neither of them are useful. smartctl does not show values like Power On Hours or Hard drive temperature. ADU report shows them empty. What's the right way to monitor [...] read more
raid
monitoring
hp
hardware-raid
hp-smart-array
3votes
1answer

Linux port based routing : reponse packets discarded

I would like to use port-based routing on my Linux local gateway. Here is my network diagram : 192.168.42.148/24 192.168.42.1/24 192.168.44.2 192.168.44.1 +--------------------+ +----------------------------+ +----------+ | Workstation (eth0)-|----------------|-(em0) Local_GW (tun0)-|------------| VPN_GW | +--------------------+ | (rl0) | +----------+ +-------------|--------------+ 10.133.8.79/21 | | 10.133.15.254/21 | +--------------------+ | Provider_GW | +--------------------+ Provider_GW only [...] read more
linux
iptables
routing
iproute2
3votes
2answers

iptables NAT with multiple interfaces

I have an ubuntu 10 machine I'm trying to set up with NAT. eth0 is the WAN interface, that uses DHCP. eth1, eth2, eth3 are LAN interfaces. They are connected to 192.168.0.50, .51, .52 respectively. NAT through eth1 works great. On eth2/3, I get nothing -- "no route to host" [...] read more
iptables
nat
2votes
1answer

Signed integer promote to unsigned long

Why C promote signed integer -1 to unsigned long 0xffffffffffffffff, but not 0xffffffff? #include <stdio.h> int main() { unsigned long ul = (int)-1; printf("%lx\n", ul); } read more
c
language-lawyer
2votes
1answer

How do I find the width of a uint_fast32_t

I'd like to be able to portably fprintf() a uint_fast32_t as defined in stdint.h with all leading zeroes. For instance if my platform defined uint_fast32_t as a 64-bit unsigned integer, I would want to fprintf() with a format specifier like %016lX, but if it's a 32-bit unsigned integer, I would [...] read more
c
printf
stdint
2votes
2answers

how can I finish activity from view

I have got an activity which has custom view. I have to add activity result: public class ActView extends Activity implements OnClickListener { <...code...> @Override protected void onCreate(Bundle savedInstanceState) { <...code...> layout = (LinearLayout) findViewById(R.id.chart_container); timelineview = new VDrawTimeLine(this,contentFull); timelineview.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)); timelineview.setBackgroundColor(0xffffffff); timelineview.setVisibility(View.VISIBLE); layout.addView(timelineview); <...code...> } } View class: [...] read more
java
android
view
2votes
2answers

Prove a function is surjective using Z3

I'm trying to understand how to prove efficiently using Z3 that a somewhat simple function f : u32 -> u32 is bijective: def f(n): for i in range(10): n *= 3 n &= 0xFFFFFFFF # Let's treat this like a 4 byte unsigned number n ^= 0xDEADBEEF return n I [...] read more
z3
z3py
2votes
1answer

PYTHON - Ctypes : OSError: exception: access violation writing 0xFFFFFFFFFA1C001B

Here is a code for writing values to memory using memory mapping. When I try to run the code, I get the error "File "MMF.py", line 26, in memcpy(pBuf, szMsg, len(szMsg)) OSError: exception: access violation writing 0xFFFFFFFFFA1C001B" import msvcrt, mmap import ctypes from ctypes import * FILE_MAP_ALL_ACCESS = 0x04 INVALID_HANDLE_VALUE [...] read more
python
ctypes
dllimport
memory-mapped-files
2votes
2answers

Flutter : How to keep user logged in and make logout

I am getting the csrf token and printing the response data in console but how to keep user logged in using the response data.I am making login using the status code i.e., if status code is 200 then move to login after that I want to keep user logged in [...] read more
authentication
flutter
2votes
1answer

Getting null error after fetching data from local db

I am having a db with few profile information, I would like to load them in my dashboard after the login. here is my code in my dashboard screen. class __DashboardPageState extends State<_DashboardPage> { UserClass userObject; var db; __DashboardPageState(){ getUserObj(); } void getUserObj() async{ db = new DatabaseHelper(); userObject = [...] read more
flutter
dart
sqflite
2votes
1answer

File Reference Number in USN returning empty

I'm using this MSDN link to read USN records programatically. https://docs.microsoft.com/en-us/windows/win32/fileio/walking-a-buffer-of-change-journal-records Error: Exception thrown at 0x00007FFD58682666 (ucrtbased.dll) in Project1.exe: 0xC0000005: Access violation reading location 0x00000000FFFFFD7F. #include <Windows.h> #include <WinIoCtl.h> #include <stdio.h> #define BUF_LEN 4096 void main() { HANDLE hVol; CHAR Buffer[BUF_LEN]; USN_JOURNAL_DATA JournalData; READ_USN_JOURNAL_DATA_V1 ReadData = { 0, 0xFFFFFFFF, FALSE, [...] read more
c++
windows
debugging
filereference
usn
2votes
1answer

CubeHash. Pure PHP implementation. Multibyte block issue (CubeHash160+16/32+160-256)

I'm newbie in cryptography. I'm trying to implement CubeHash hashing function on pure PHP. I've ported some JS-version (32-bit) to PHP (64-bit), but I'm not able to implement CubeHash with param b when it is grater than 1 (block size is grater than 1 byte). Please, help me. run online: [...] read more
php
hash
cryptography
sha-3
2votes
2answers

Does JMeter fully support NTLM Authentication?

I am struggling to make JMeter to work with NTLM authentication. At the beginning I was provided with an URL and credential. When I tested the credential in Firefox and in Chrome I received the authentication popup and upon providing the credential I was authenticated. So I had created a [...] read more
java
jmeter
apache-httpclient-4.x
ntlm
apache-commons-httpclient
2votes
2answers

Error trying to run here example on Flutter

So i'm trying to integrate Here to my flutter app. So i was following this page flutter-sdk-navigate to get it to work. I tried to run the hello_map example 4.3.0.0-navigate-flutter but i cannot get it to work. I did all the steps mentioned (including setting com.here.sdk.access_key_id and com.here.sdk.access_key_secret with my [...] read more
flutter
here-api
2votes
2answers

Vector calling destructors when reallocating

I have a dynamically allocated 3D array of pointers to class: class Foo { public: int a; float b; float c; Foo(int x, float y, float z) { a = x; b = y; c = z; } }; in a class: class Bar { public: Foo ****p_arr; Bar(); ~Bar(); [...] read more
c++
arrays
pointers
dynamic
2votes
2answers

Windows 10 drops IKEv2 VPN connection to Cisco router in exactly 60 seconds after last data exchange

Update 3: 22 January 2017 I've narrowed down the update that causes this problem: KB3201845 OS Build 14393.479 from December 9 2016. I went through all these updates step by step. Looking at the changes files manifest, these files have been changed: * agilevpn.sys * vpnike.dll Other topics I've created: [...] read more
networking
windows-10
vpn
2votes
1answer

Windows: SSL/TLS connection reset after ClientHello (ECONNRESET / write:errno=10054)

I'm using Windows Server 2012 as a workstation. The problem is that HTTPS connection initiated by node.js randomly fails. Probably this is system-wide issue and not only node is affected, but it appears mostly with node. Because any HTTPS request can randomly fail, npm install is a lottery and for [...] read more
windows
networking
ssl
https
openssl
2votes
0answers

on xeon, does addq require 2 clock cycles?

How many cycles are required to add long ints on a xeon? from timing trials, it appears that 2 clock ticks are needed. /proc/info says model name : Intel(R) Xeon(R) CPU X5660 @ 2.80GHz sample c code (loop.02.c) unsigned long i, j=0; for(i=0; i<(0xFFFFFFFF);i++) j+=3; assembler code 21:loop.02.c **** for(i=0; [...] read more
xeon
clockspeed
2votes
0answers

Failed MacbookAir boot Linux (Tails) - Kernel panic on boot

I’ve an error with my MacBook Air (Retina, 13-inch, 2018), version 10.15.1 Boot ROM version : 1037.40.124.0.0 (iBridge: 17.16.11081.0.0,0) I try to boot on Tails by a USB key and Apple adaptator Thunderbotl/USB See the log after select Tails boot : (AE_ALREADY_EXISTS) (20190703/psparse-529 [ 0.772994] ACPI Error: Aborting method \_PR.CPU0._PDC [...] read more
linux
boot
mac
kernel-panic
tails
2votes
1answer

Network interface for VPN connection explanation

I'd like to know exactly what is happening when I create a connection with my company's VPN. When I connect (using OpenVPN), I see the following network interface by using ifconfig: utun3: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500 inet 10.8.0.18 --> 10.8.0.17 netmask 0xffffffff This looks different from other network interfaces in that [...] read more
vpn
ifconfig
2votes
1answer

How to slow down traffic with tc?

I'm on Ubuntu 14.04; I'd like to learn the basics of traffic shaping, I made a simple script that should slow down my HTTP(S) traffic to ports 80 and 443. # usage: sudo ./filename.sh #delete existing rules # wlan0 is my WiFi tc qdisc del root dev wlan0 iptables -t [...] read more
wireless-networking
iptables
network-traffic
traffic-shaping
2votes
1answer

How do I configure DNS when sharing a VPN connection in linux?

I'm using a Linux computer (raspberry pi) to share a VPN connection over ethernet. I want the raspberry pi to connect to the internet normally (not over the VPN). I'm very close to getting it working, but I don't know how to configure the DNS for the eth1 network. Connection [...] read more
linux
networking
vpn
dns
dnsmasq
2votes
0answers

How can I get a Mellanox ConnectX-2 to work on this ASUS desktop motherboard?

People seem to be happy with second-hand Mellanox ConnectX-2s on Linux so I grabbed a pair. Both cards result in an network interface showing up on one computer but neither show up in the other computer. Working computer: * EVGA 120-LF-E650 desktop board * Ubuntu 16.04 LTS * Linux 4.4.0 [...] read more
linux
networking
network-adapter
2votes
1answer

Enable SCHANNEL Protocols in Windows Registry (Win7 & 2012R2) DisabledByDefault or Enabled?

I have enabled TLS 1.0/1.1/1.2 protocols on my local Win7 machine and 2012R2 server as well as disabled SSL 2.0/3.0 using the registry DWord value DisabledByDefault = 0 based on the following Microsoft support article: https://support.microsoft.com/en-us/kb/245030(see SCHANNEL\Protocols subkey...) But i noticed another TechNet article which seems to contradict this KB [...] read more
encryption
tls
authentication
cryptography
openssl
2votes
1answer

Routing subnet to specific routing table with fwmark, direct to ISP and VPN

Introduction I'm trying to set up a VPN on my router so that I have two routing tables. I want it so that all the filtering is done with iptables, and iproute just acts on the specific fwmarks, ie generic rules. It is an improvement of Routing a particular subnet [...] read more
networking
router
routing
iptables
openvpn
2votes
1answer

OS X - GPU Panic

For half a year, I've been experiencing random freezes/reboots on my MacBook Pro Retina Mid 2012 model. My current OS is OS X Yosemite, but I started experiencing the issue in the Mavericks era. The laptop has endured some occasional, unintended slight physical abuse, but nothing very serious. Just mentioning [...] read more
macos
gpu
kernel-panic
2votes
1answer

Computer tends to BSOD crash (in any browser) when using Flash based apps?

About a month ago my computer started experiencing crashes, at first it was just every once in a while, then it escalated to around 5 times a day. Typically it crashes when I access flash-based games and videos, but it has occurred at random, e.g. no sensible correlation between what [...] read more
windows-7
crash
flash
bsod
2votes
3answers

Linus/ext4/nvme crashes during high io

During mvn compilation, I have random crashes. The problem seems related to high IO and in kern.log, I can see things like: kernel: [158430.895045] nvme nvme1: controller is down; will reset: CSTS=0xffffffff, PCI_STATUS=0x10 kernel: [158430.951331] blk_update_request: I/O error, dev nvme0n1, sector 819134096 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class [...] read more
linux
ssd
ext4
io
nvme
2votes
1answer

What's the largest possible Logical Cluster Number (LCN) on an NTFS volume?

By spec, NTFS partitions can have up to 263 - 1 logical clusters. But when I tried to calculate what size drive I'd need to test values greater than 32bits, I ran into a problem. Doing the math, a 4k cluster size with 0xFFFFFFFF + 1 clusters results in 17,592,186,044,416 [...] read more
ntfs
2votes
1answer

Enable IPv6 in MariaDB in FreeBSD jail

I'm trying to set up a MariaDB 10.2 Server on a FreeBSD 11.2 Jail. The Server is running and accepts remote connections via IPv4 just fine. According to sockstat, it should also be listening on IPv6: db# sockstat | grep 3306 mysql mysqld 17516 177 tcp46 *:3306 *:* This is [...] read more
mysql
freebsd
ipv6
mariadb
2votes
2answers

Transparent HAproxy on ubuntu (amazon EC2)

I am trying to setup a transparent HAproxy load balancer using ubuntu 18.04 on amazon EC2. I got the HAproxy to work on a non-transparent mode, so now I am trying to add the changes required for the transparent mode, but I am getting 503 Service Unavailable No server is [...] read more
haproxy
transparent-proxy
2votes
0answers

How to get TOR hidden service to work with iptables

I'm running an Arch Linux server which acts as a TOR relay and I would like it to act as a hidden service as well (I want to provide .onion access to my services, I know running a relay next to a HS is not suitable for an anonymous service). [...] read more
iptables
service
arch-linux
tor
hidden
2votes
0answers

How to fix Apache2 w/ suPHP to scan the correct .ini directory?

Apache2 was reading the correct area for php.ini in /etc/php5/apache2 until suPHP was added to the system. Configuring suPHP_ConfigPath in /etc/apache2/mods-available/suphp.conf gets the correct php.ini loaded, but does not correct the directories to be scanned. How, and where, do I fix this so that Apache loads/scans/uses PHP from the original [...] read more
apache2
php
2votes
2answers

OpenVPN routing between static hosts

I have an OpenVPN server with successful static-key tunnels to two separate hosts - my laptop, and another server elsewhere on the internet. I have connectivity over both OpenVPN tunnels. How do I make it so the server with two tunnels routes traffic across its tunnels? Switching to server mode [...] read more
debian
vpn
routing
openvpn
2votes
4answers

OpenVPN client connects but can't access internet

I setup an Openvpn server on a centos box and I can get the client to connect (osx) but can't access the internet or even the local network. I thought maybe DNS but couldn't access any sites via IP. Any help would be appreciated. I will list my config files [...] read more
centos
iptables
openvpn
2votes
0answers

DHCP offer is unicast but DHCPACK is broadcast

My DHCP server broadcast DHCPACK 0xffffffff . it is not working on layer 3 dhcp relay agent . as it can not forward this broadcast message to my client. can any one help me from exactly the broadcast bit set ? should I send any parameter to dhcp server so [...] read more
dhcp
dhcp-server
isc-dhcp
2votes
1answer

nslookup fails inside freebsd jail

I posted on the freebsd forums. I've been trying all night and I've made some progress but still I can't connect to the internet from my freebsd jail. Please just give me a hint here. I get the following inside the jail if I do nslookup www.google.com : ;; connection [...] read more
networking
freebsd
bsd
2votes
3answers

How to configure an authoritative time server in Windows Server

I have a performance lab running behind a firewall, so none of the machines in the lab has internet access. All machines in the lab are part of a domain with the domain controller also present inside the lab. The problem is that some server's time are drifting heavily. Some [...] read more
windows-server-2003
windows-server-2008-r2
ntp
w32time
1vote
6answers

Change View Color with alpha animation

I am writing an code where need to modified view background from one color to other color along alpha animation. I tried with ObjectAnimator backgroundColorAnimator = ObjectAnimator.ofObject(stickyLayout, "backgroundColor", new ArgbEvaluator(), 0xFFFFFFFF, 0xff78c5f9); EDIT: Since most of us not clear, Assume we need to change this color with alpha on seekbar [...] read more
android
android-animation
background-color
1vote
1answer

Using the right Perl array references with IPC::Run

I'm trying to get this Perl code to work correctly and I believe I just need to get my references right. I would appreciate any feedback on how to use references, but if this code can't be made to work without API changes I would also appreciate feedback on how [...] read more
perl
perl-ipc-run
1vote
5answers

virtual listbox in Swing

I'm trying to figure out how to make a virtual listbox (or tree or outline) in Swing -- this would be one where the listbox can show a "view" within a large result set from a database without getting the entire result set's contents; all it needs to give me [...] read more
java
swing
list
virtual
1vote
2answers

Using XSETBV to write to XCR0 creates a general protection fault in a VM on hardware that supports MPX

I am trying to write to Extended Control Register 0 (xcr0) on an x86_64 Debian v7 virtual machine. My approach to doing so is through a kernel module (so CPL=0 ) with some inline assembly. However, I keep getting a general protection fault (#GP) when I try to execute the [...] read more
c
linux-kernel
x86
virtual-machine
vmware
1vote
1answer

C++ find range ip addresses by significant bits

I have the following code for find range of the ip addresses v4. It works perfectly: uint32_t byte1 = 0, byte2 = 0, byte3 = 0, byte4 = 0, significantBits = 0; int read = sscanf(ipRangeStr.c_str(), "%3d.%3d.%3d.%3d/%2u", &byte1, &byte2, &byte3, &byte4, &significant); if (read < 4) { throw std::runtime_error("Cannot parse [...] read more
c++
boost
1vote
1answer

Why gcc place a large constant array to ".rwdata" section rather than ".rodata" section?

/* 0xFFFFFFFF * 256*/ #define test_256X0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, ... 0xFFFFFFFF After compiling, the const array is placed in ".rwdata" section rather than ".rodata" section, and I don't know why. After google and searching the stackoverflow site, there is no specified answer. Does any one know why or how to [...] read more
c
gcc
linaro
1vote
0answers

type 'Color' is not a subtype of type 'ImageProvider<dynamic>'

I am trying out the new XD to flutter plugin. I have tried to export part of the tutorial app, which should be very basic. It results in me just having a single .dart file that should take care of displaying four images and a bit of text. However, I [...] read more
flutter
dart
1vote
0answers

When assembleDebug Out of Memory error is thrown

So I'm new to flutter and dart.I've made multiple android apps and I am pretty familiar with coding but I just can't get to know flutter. I use Android Studio as Ide and when I try to compile my code , on the assembleDebug part, This error is thrown: c:\b\s\w\ir\k\src\third_party\dart\runtime\vm\zone.cc: [...] read more
flutter
dart
1vote
1answer

Flutter: i get invalid argument(s) Error in flutter if i want to navigate to detail page

I want to navigate to detail page. But i get invalid argument error. In detail page, i try to get detail information from my online server. If i click on Hot reload button in android studio, the error disappear. Please, How can i do to fix this error ? Screenshoot [...] read more
android
android-studio
http
flutter
dart
1vote
7answers

memory effective list of integers with fast search and slow insert/delete

I'm trying to find the best data structure for a sorted list of positive integers (millions of elements). Requirements are (in order of importance): 1. Small memory footprint 2. Fast O(log n) search 3. Insert/delete faster than memcpy() I'm thinking about keeping two arrays: one for search and one for [...] read more
java
algorithm
design-patterns
data-structures
1vote
1answer

LWJGL not showing textures

Having problems showing the textures on my 3D box in LWJGL using slick. Earlier I had the error: WARN:class org.newdawn.slick.opengl.PNGImageData failed to read the data java.lang.UnsupportedOperationException: Unsupported format for this image Saying it couldnt read the image. So I converted the image to 24bit (also tried 8bit) and now i [...] read more
java
opengl
lwjgl
slick2d
1vote
1answer

Codec and setting for lowest bitrate ffmpeg output

I need to convert my input audio file to the lowest possible size to transfer it over a radio transmitter. Now with the AAC codec and MP3 format I used 8kbps for bit rate, 16 kHz for sampling rate and 1 channel, and my output data is about 3kb per [...] read more
audio
ffmpeg
android
mp3
1vote
1answer

Wireguard tunnel slow and intermittent

After asking this question I've gotten a wireguard vpn set-up that forwards all traffic from my local lan to a remote server. Connecting from the wireguard client host is fast. However, the connection from clients on the lan is much slower and drops a lot of connections. Traceroutes show that [...] read more
vpn
wireguard
1vote
1answer

Debian not detecting NVMe, ASUS Zenbook UX430UA

I'm trying to set up a Win 10 / Debian 10 dual boot on an Asus UX430UA that I've just bought new. I replaced the OEM SATA SSD with a larger NVMe SSD (ADATA XPG SX8200) and am trying to install both OS's on the same SSD, as I've done [...] read more
linux
debian
ssd
asus-laptop
nvme
1vote
1answer

php and zendguard with asterisk / freepbx

Im running freepbx version 13 and started to upgrade to version 14. System is on a CentOS 6 system. The system required certain upgrades first including php which I've upgraded to 5.6.40 and installed zenguardloader 2.6.0 I'm assuming there is some sort of incompatibility between php and zenguardloader as I [...] read more
php5
freepbx
1vote
0answers

Find cause of BSOD

Recently, I started getting BSODs a few times a week. I have a hunch that they are related to the display driver/docking station (I'm using IBM T480) because they seem to happen around the time I connect/disconnect to the docking station and more importantly, I don't actually see the BSOD, [...] read more
windows-10
bsod
1vote
0answers

Missing memory in linux ubuntu 16.04 system

I've been struggling with this problem for quite some time and am completely out of ideas. I have 8GB memory installed, but ubuntu sees only 3.2 GB. Hardware: Mother Board Information Intel DG965SS Processor Information Socket Designation: LGA 775 Type: Central Processor Family: Core 2 Manufacturer: Intel(R) Corporation ID: F6 [...] read more
linux
ubuntu
memory
1vote
0answers

The system time interval between Arm and Ubuntu

Problem Description: With Arm machine as a Server, with Ubuntu as a Client, Server via the Client send time package to sync that time, after synced time, Comparing their time, I found that with a continuation of the time, the time difference is bigger and bigger, I suspect that may [...] read more
linux
ubuntu
1vote
0answers

SOME/IP length error in trace window when sending SOME/IP messages from CANOE using CAPL script

I am getting SOME/IP length error(but getting correct data) in trace window when sending SOME/IP messages from CANOE using CAPL script. I think i am missing any settings that should be done in Canoe. Can anyone suggest a possible reason for this? and how to solve this? The code used [...] read more
networking
1vote
0answers

GRUB2 fails to boot multiboot compliant kernel that worked with GRUB Legacy

I have been trying to port a non-Linux mostly multiboot 0.6.96 compliant (the multiboot header is past 8 KiB) 32-bit elf kernel from GRUB Legacy to GRUB2. Currently, the kernel and GRUB are placed on a USB which is used to boot a different computer via the BIOS, like a [...] read more
boot
usb
grub
1vote
0answers

Error 582 while trying to access Windows Features

Today went to turn on the Hyper-V feature in the "Turn Windows Features On and Off" settings, but the dialogue would always just load for like 20 seconds then crash my machine. I looked up alternative ways to view/access the Windows Features and found you could do it from DISM [...] read more
windows-10
dism
1vote
1answer

Windows 7 OK button on Copy To dialog doesn't copy profile

So I am attempting to copy a User Profile to the default profile. I am using WinSpy++ to enable the disabled "Copy To" button - this process works on a stock laptop I have here. However, this does not work in a customised image I have with a fair amount [...] read more
windows-7
windows-registry
user-profiles
event-log
windows-embedded-7
1vote
2answers

How to add routing for 2 VPN connections?

I am trying to setup second VPN connection over the first one, which is my only option at the moment. The first VPN connection works fine(utun1), providing me internet access and it looks like this: Internet: Destination Gateway Flags Refs Use Netif Expire 0/1 10.56.10.5 UGSc 0 0 utun1 default [...] read more
networking
macos
vpn
routing
1vote
2answers

Mount ancient PATA disk (from a 386) to restore files (ATA 1, or older)

I have a PATA disk from a 386 laptop (1995?) which I would like to get files off. It is a Seagate 9096A, and is working. Using the old laptop is not possible. I have tried a USB - 2.5" PATA adapter, but it failed to properly interface with the [...] read more
hard-drive
1vote
1answer

Semi-disconnected network drives Windows 10 after timeout

I'm using Windows 10 in our company for a couple of weeks. Using the GPO (I'm a domain admin myself) we added some network drives for all users of our domain. This works fine. But.... For some reason, after a while my network drives are semi-disconnected. I use the word [...] read more
windows-10
network-shares
connection
1vote
0answers

Web Services for authentication over SSL failed due to TLS 1.2 on Windows Server 2012 and IIS 8

There are a SSL vulnerability called POODLE discovered by Google team in SSLv3 protocol. So uses of SSLv3 is not secure to use. Now its recommended to use TLS 1.2. We have IOS applications that are using web services over SSL for login to app. Apps started throwing error as [...] read more
login
ssl
windows-server-2012
https
web-services
1vote
1answer

linux drops packet when trying to route it - why?

I track packets using LOG targets for all chains of all tables and the last chain I see my packet in is the POSTROUTING chain of the mangle table: mangle_PREROUTING: IN=eth0 OUT= MAC=00:16:3e:0f:01:00:00:16:3e:0f:02:00:08:00 SRC=10.2.1.2 DST=10.1.1.2 LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=60912 PROTO=ICMP TYPE=0 CODE=0 ID=41230 SEQ=1 As off http://inai.de/images/nf-packet-flow.png, I expected [...] read more
networking
routing
iptables
1vote
0answers

Higher resolution not available Ubuntu 14.04 on ESXi host

The maximum resolution available for my Ubuntu 14.04 vm is 1360x768. However, the max resolution for my Ubuntu 16.04 is 2560x1600. Both are running on the same ESXi host with the same video card settings. Both have the latest version of VMware tools installed. The physical monitor I am accessing [...] read more
ubuntu-14.04
esxi
1vote
1answer

How to set up dual quadro cards on RHEL 5.5?

I have a RHEL 5 workstation with 2 nvidia Quadro FX4500 cards, with one display attached to each card. After doing a clean install of RHEL 5.5, the second display doesnt work (it worked ok in RHEL 5.2). Neither separate X screens nor Xinerama are working. The kernel version is [...] read more
multiple-monitors
redhat-enterprise-linux
nvidia-quadro
1vote
0answers

Is my NVIDIA GT 540M having a hardware failure?

I'm using a Sager NP5160 laptop, which has an NVIDIA GT 540M dGPU as well as integrated graphics. I'm dual-booting Windows 7 and Linux Mint. I've recently noticed issues with games not performing as well as they should when I switch to balanced mode (from UMA mode) in Windows 7. [...] read more
graphics-card
hardware-failure
nvidia-geforce
discrete-graphics
1vote
0answers

Mac not setting routes on openconnect with vpnc-client

I'm trying to connect to a VPN on my Mac, but for some reason routes aren't being set, even though they seem to be set by the vpnc-client script. root@machost:/Users/username# cat .openconnect authgroup=AUTHGROUPHERE user=USERHERE script=/usr/local/bin/vpnc-script no-cert-check #background #passwd-on-stdin root@machost:/Users/username# openconnect --config=.openconnect HOSTHERE POST https://HOSTHERE/ Attempting to connect to server 1.1.1.1:443 [...] read more
networking
mac
vpn
routing
cisco-vpn-client
1vote
1answer

What does netstat -r on OSX tell you about gateways?

I noticed the route table has a lot of entries I do not understand. The route tabel is: Internet: Destination Gateway Flags Refs Use Netif Expire default 192.168.0.254 UGSc 28 0 en1 10.8.0.1/32 10.8.0.5 UGSc 1 2 tun0 10.8.0.5 10.8.0.6 UH 2 3 tun0 127 localhost UCS 0 284 lo0 [...] read more
macos
networking
vpn
routing
netstat
1vote
1answer

Packets marked by iptables only sent to the correct routing table sometimes

I am trying to route packets generated by a specific user out over a VPN. I have this configuration: $ sudo iptables -S -t nat -P PREROUTING ACCEPT -P OUTPUT ACCEPT -P POSTROUTING ACCEPT -A POSTROUTING -o tun0 -j MASQUERADE $ sudo iptables -S -t mangle -P PREROUTING ACCEPT -P [...] read more
iptables
openvpn
iproute2
1vote
0answers

Auto-mount all USB-devices at same USB socket to same mountpoint

* I have a small computer with 2 USB sockets : A and B. * I want any external USB disk, attached to socket A - to be mounted as " deviceA" * I want any external USB disk, attached to socket B - to be mounted as " deviceB" [...] read more
linux
ubuntu
usb
debian
automount
1vote
0answers

Using TC from iproute, unable to match canid

I'm trying to use tc from iproute2 to prioritize packets sent to a canbus. Before doing so I read this guide about the issue: http://rtime.felk.cvut.cz/can/socketcan-qdisc-final.pdf Even using the exact examples from that pdf, I'm not able get any of the filters to get a match. My current version of kernel [...] read more
linux
networking
iproute2
1vote
0answers

Why did my ubuntu machine leave suspend?

Sometimes I come upstairs and my computer has left suspend and is booted or booting or whatever. Is there a log somewhere that will show what caused it to leave suspend? (ie mouse, keyboard, magic packet, power button?) This is what I see in dmesg: [191069.614821] init: anacron main process [...] read more
linux
ubuntu
hibernate
1vote
1answer

MFT / NTLDR / NTFS (external drive) damaged after ntfsresize (Linux)

I have had an external USB drive attached to a RaspberryPi (headless), 1.5 TB Volume, 100% partition NTFS. During this question Creating ext4 partition from console, my goal was to change the overall fs to ext4 by shrinking the ntfs partition to 50%, copy all files to the new partition [...] read more
linux
ntfs
mft
ntldr
ntfsresize
1vote
1answer

How do I stop Spotify from crashing?

I am using Spotify on wine on Linux (Ubuntu). It worked fine before, but after I uninstalled and re-installed it, for some reason every time I run it, it doesn't work. It crashes after I log in. When it crashes I can see the Spotify window. When it crashes, Spotify [...] read more
linux
ubuntu
wine
spotify
1vote
0answers

Mac crash report info - what can I learn from it?

My Mac (MacBook Pro, 10.7.3 OS) is crashing a couple of times a day. I started this behaviour just recently, and for no apparent reason. I've done a disk check and it all seems fine. When it crashes, the screen goes black and I have to long-press the power button [...] read more
macos
mac
crash
1vote
0answers

Mac crashing with black screen on XCode install + random other times

I have a Macbook Pro bought over a year ago without extended warranty. Lately it has started crashing as follows - the screen goes black. The last note of the music (if playing, radio or iTunes) loops repeatedly. It will not go into in standby when screen is closed. Power [...] read more
mac
crash
xcode
1vote
4answers

Kernel Panic every time I open a print queue

Every time I open any printer queue I get a kernel panic and have to reboot. It's quite frustrating. I've tried removing/adding printers, clearing all caches with Onyx, repairing permissions, all manner of things to no avail. Any tips would be greatly appreciated! ==== CRASH REPORT ==== Interval Since Last [...] read more
macos
printing
osx-leopard
kernel-panic
1vote
1answer

IIS Site breaks after disabling SSLv3

I am trying to disable SSLv3 on a 2008 R2 web server that runs IIS 7.5 but as soon as I disable SSLv3 and reboot, the website is no longer reachable. I ran a packet capture with SSLv3 still enabled and my client is establishing a TLS 1.2 connection so [...] read more
windows-server-2008-r2
ssl
iis-7.5
tls
poodle
1vote
0answers

TC Filter With BPF and NFTables Packet Marking

I made a TC BPF ingress program and I want it to process specific packets only marked by NFTables. Here's my NFTables table that marks the specific packets: table ip compressor_tc { chain prerouting { type nat hook prerouting priority -99; policy accept; ip daddr 10.50.0.3 tcp dport != ssh [...] read more
tc
filter
1vote
1answer

Routing between OpenSWAN / IPSEC tunnels

I am trying to connect multiple Amazon VPCs (across regions) together using OpenSWAN and Amazon VGW's. The router instance can ping to hosts in both VPCs, and traffic is attempting to cross the router, but is getting dropped. EDIT: I see the counter XfrmInNoPols incrementing when the pings are not [...] read more
amazon-web-services
vpn
linux-networking
ipsec
openswan
1vote
0answers

Hyper-V Core Server 2019 ignoring power plan thresholds

I am attempting to tweak Hyper-V Core Server 2019 (host) power thresholds, however my attempts have failed so far. Scenario The newly created Hyper-V 2019 Server (part of Workgroup, not yet a Domain) has been attached to an external UPS. Battery status is provided through a USB cable. The UPS [...] read more
hyper-v
ups
1vote
0answers

Windows Task Scheduler claims successful execution despite return code of -1 (0xffffffff, 4294967295)

Having a very strange case here, where a windows task scheduler job executes a C# console application at a specific time, that returns -1 in case of an error. The job is configured to rerun itself if an error occurs. The console app fails and returns the error code. The [...] read more
windows
scheduled-task
.net
console
1vote
0answers

Enabling TLS 1.1/1.2 on Windows Server 2008 SP2 still not possible

first for those of you, who might think, this question has been asked so many time before so it is a useless duplicate... 1. I cannot (yet) comment on other questions, so my only option on this is to ask new question. 2. I've searched and read the following articles [...] read more
windows-server-2008
ssl
1vote
3answers

2018-08 Cumulative Update for Windows Server 2016 (KB4343887) Failing

I've been trying to update the Patches which is failing continuously enter image description here [https://i.stack.imgur.com/PDkYQ.png] When I click the Failed to Install, I popped with the below description > 2018-08 Cumulative Update for Windows Server 2016 for x64-based Systems (KB4343887) A security issue has been identified in a Microsoft [...] read more
windows-server-2016
windows-update
credssp
1vote
1answer

Amazon RDS SQL Server Express 2012 - Fail to log-in

I recently created a new RDS of SQL Server Express 2012. I have set the security to be publicly available and to accept all ports and incoming connections. From some reason, I fail to connect it using my three clients: - HeidiSQL - SQL Server Management Studio - java client [...] read more
amazon-vpc
amazon-rds
1vote
1answer

shape dropbox on linux router with tc and iptables

Another machine on my LAN is uploading to Dropbox and saturating my internet connection's upload bandwidth. When that happens my pings to 8.8.8.8 take 3000-6000ms. When dropbox is not uploading my pings to 8.8.8.8 are 45ms. I'm trying to simply slow down and de-prioritize forwarded traffic to/from Dropbox on my [...] read more
traffic-shaping
qos
tc
htb
1vote
2answers

Ubuntu: updated mainline kernel, now drops to initramfs

I attempted to upgrade our system's mainline kernel and am now dropping into initramfs. < update>: The commands I used were: apt-get update apt-get upgrade apt-cache search linux-image //grabbed last entry apt-get install linux-image-4.4.0-67-generic < /update> I have researched the topic and found that I should be able to access [...] read more
ubuntu
boot
kernel
grub
initramfs
1vote
2answers

Kerberos Failure Audit Event Id 4769 on Domain Controller

I have an average of 17-18 failure audit events per hour recorded in the Security event log of a Windows 2012R2 domain controller, related to attempts of a Windows 2008R2 member server to obtain a Kerberos service ticket A Kerberos service ticket was requested. Account Information: Account Name: TORPDC01$@ACME.COM Account [...] read more
windows-server-2008-r2
windows-server-2012-r2
kerberos
1vote
0answers

iptables SNAT not honoring original port intermittently

I have a mark/mangle/SNAT setup that has been working great for years. However, when trying to use this same setup for DHCP requests, it intermittently fails: *mangle -A OUTPUT -p udp -m udp --dport 67 -j MARK --set-xmark 0x7/0xffffffff #... *nat -A POSTROUTING -m mark --mark 0x7 -j SNAT --to-source [...] read more
iptables
routing
1vote
2answers

"Service Unavailable" on fresh installation of OS and IIS 6 no matter what I try

I recently installed Windows Server 2003 on a virtual machine and then added the IIS role. (The reason for using an old OS is to make some old software work - Crystal Reports web server component) I have not yet added any pages/apps to the website (except one very simple [...] read more
windows-server-2003
iis-6
1vote
1answer

Can't connect to AWS instance after import with stock Centos7

I am trying to import a Centos7 based VM into Amazon AWS. The VM was created with the Centos7 minimal ISO installed into VirtualBox. Networking in the VM works fine locally before trying to do the import. I am using the EC2 command line tools to do the import: ec2-import-instance [...] read more
amazon-ec2
amazon-web-services
centos7
import
1vote
1answer

Out of 2 VMs and their 1 host, only 2 at a time are reachable from the LAN

I have a VMware vSphere hypervisor set up with two VMs. I need to be able to reach the host (for configuration, etc.) as well as both VM's from my client (which is also in the same subnet). I want to set up a PoC Hadoop cluster, and the client [...] read more
networking
vmware-esxi
1vote
3answers

Windows Server 2003: Backup Failed

I am having trouble backing up my server. I back up to an external hard drive, and up until now, I haven't had any problems with it. But today my backup failed. Here is the report from the backup log: Backup Status Operation: Backup Active backup destination: File Media name: [...] read more
windows-server-2003
backup
vss
1vote
0answers

Policy routing local user's traffic down a tunnel

I've got a Linux based Firewall/Router running iptables and SNAT for traffic passing through it to the Internet via a single uplink - This is working fine. There is also a small number of applications running on this server which also work fine. I've also got an OpenVPN client running [...] read more
iptables
routing
openvpn
linux-networking
1vote
1answer

How to debug intermitent network outage on Citrix XenServer

I have two Citrix XenServers in a pool. Both have a NIC for Management, a NIC for the SAN and a NIC for the VMs to connect to the network. The NIC for the VMs (eth3) has multiple networks configured for the VMs with different VLAN IDs. This has been [...] read more
xenserver
1vote
0answers

Freebsd, ipfw sched - config type = QFQ get frozen

I have some freebsd soft-router $uname -r 8.2-STABLE code for ipfw: pipe 50 config bw 70Mbit/s sched 50 config type QFQ queue 502 config sched 50 weight 1 mask dst-ip 0xffffffff queue 501 config sched 50 weight 9 mask dst-ip 0xffffffff add 01501 queue 502 ip from 10.32.0.0/14 to 10.32.0.0/14 [...] read more
freebsd
traffic-shaping
ipfw
1vote
2answers

OpenVPN Network Unreachable

I'm working to set-up a VPN access to a group of virtual machines at Linode., the topology looks something like this: db.example.com LAN: (eth0:0) 192.168.154.127/255.255.128.0 utility.example.com LAN: (eth0:0) 192.168.164.229/255.255.128.0 And, more servers on the LAN with addresses in the same range. The utility server is hosting the OpenVPN Here's my [...] read more
ubuntu
mac-osx
routing
openvpn
0votes
0answers

Bad detection in edge Detection opencv android

I would make a edge detection app in Android with opencv. But I got bad edge detected photo. Codes : if (extras != null) { String value = extras.getString("key"); Uri uri = Uri.parse(value); Bitmap bitmapOriginal = null; try { bitmapOriginal = MediaStore.Images.Media.getBitmap(this.getContentResolver(), uri); } catch (IOException e) { e.printStackTrace(); } [...] read more
android
0votes
1answer

memset large memory region allocated by shm_open/ftruncate/mmap crashes with bus error

I have a demo program which uses shm_open/ftruncate/mmap to allocate memory: #include <unistd.h> #include <sys/stat.h> #include <sys/file.h> #include <sys/mman.h> #include <string.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> void shm_alloc(const char* path, size_t size) { int shmfd = shm_open(path, O_CREAT | O_EXCL | O_TRUNC | O_RDWR, 0666); if (shmfd == -1) [...] read more
c
linux
shared-memory
mmap
0votes
1answer

Raspberry BLE Encryption / Pairing

I'm trying to use my Raspberry Pi 3B to communicate with a BLE enabled device which dosen't require a PIN. I first tried with Ionic on iOS using cordova BLE central ( https://github.com/don/cordova-plugin-ble-central), which worked as expected, here is the exchanged packets : iOS (PacketLogger) May 21 07:59:36.825 Note 0x0000 [...] read more
node.js
raspberry-pi
bluetooth-lowenergy
0votes
0answers

Image become transparent while rotating on canvas

I'm making an analog clock Live wallpaper. AnalogClock extends Relative layout and later i'm drawing this view on canvas using wallpaper service. All code is working fine but there is some problem when its seconds needle reach at 3 (i.e 180 degree or 15 mins) its transparency becomes zero below [...] read more
android
android-studio
matrix
canvas
viewgroup
0votes
1answer

Weird UC3 Reset behavior after user page NVRAM usage

I recently need to use in build NVRAM/EEPROM of AT32UC3L0256 to store some configuration data. I finally managed to use the user page NVRAM of the MCU (after days of trial and error and cursing on GCC ignoring noinit directives and fixing and workarounding bugs in ASF as usual) to [...] read more
c++
reset
bootloader
avr32
atmel-uc3
0votes
1answer

Converting CIDR notation into IP range without other library

I want to find the IP range from CIDR. For example, I input "192.168.1.1/24". How do I calculate the IP range in Java? I only can change the IP address and subnet mask to byte[]. But I don't know how to merge them. This is my code. String str = [...] read more
java
binary
byte
subnet
0votes
0answers

Is there a way to control the leading element behavior of NavigationRail in Flutter?

Flutter recently launched their v1.17 (latest stable release) and in that they have included a new widget "Navigation Rail". Though this widget is still in its early stages(and I'm expecting a bit more additional properties like padding for NavigationRailDestination) it gives a whole new perspective to orthodox navigation. So while [...] read more
flutter
flutter-layout
0votes
2answers

Can't make Stack of Widgets clickable after exporting Widget from Adobe XD

I want to add one widget I've exported from Adobe XD to ListView.separated and in that widget I want two places to be clickable, however I cannot completely understand where should I put InkWell() or GestureDetector() or maybe another widget to make two places clickable Here is the code: import [...] read more
flutter
dart
0votes
0answers

NodeJS - Visual Studio 2019-app.js exited with code -1

I am new to NodeJs.I begin NodeJs by using Visual Studio 2019 as IDE.When i run the project I endup with message showing that The program 'app.js' has exited with code -1 (0xffffffff). How to fix it? read more
node.js
visual-studio-2019
0votes
0answers

'System.Reflection.TargetInvocationException' occurred in mscorlib.dll

I try to add Owin in azure worker role in vs 2019 through this link here i copy everthing from this link but on running i got this error .How I resolve this WorkerRole.cs using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Net; using System.Threading; using System.Threading.Tasks; using Microsoft.WindowsAzure; [...] read more
c#
azure-worker-roles
.net-framework-version
0votes
0answers

How to draw Canvas Points paths into another Canvas in Android?

What actually I want, whenever I draw or write in 1st canvas then at same time it would be show in 2nd canvas with points not bitmap. The reason is 2nd user will aware with that another one is working on same screen. I have done with store points and [...] read more
java
android
canvas
android-canvas
0votes
0answers

x86 sysenter access violation

I'm trying to use the x86 sysenter instruction however I keep getting this error after the sysenter instruction: Access violation reading location 0xFFFFFFFF. mov edx, ecx pop ecx pop eax mov DWORD PTR [esp], ecx mov eax, [esp + 24] ; id. sysenter ; kernel. sub esp, 8 jmp DWORD [...] read more
assembly
x86
x86-64
masm
0votes
0answers

How to make the code generated by adobe XD to flutter plugin, actually usable & responsive based on screen size?

Recently adobe XD released its new plugin that supports flutter. basically it takes the design and transforms it into actual flutter code. The designer designed it on iphoneX dimensions and the code use absolute positioning according to it. The problem is it doesn't support layout / responsive yet so if [...] read more
flutter
plugins
responsive
adobe-xd
0votes
0answers

I GET ( Index was outside the bounds of the array) ERROR

hey guys Im trying to make a injector but i am getting error namespace AstromyJector { public partial class Form1 : Form { public Form1() { InitializeComponent(); } [DllImport("kernel32")] public static extern IntPtr CreateRemoteThread( IntPtr hProcess, IntPtr lpThreadAttributes, uint dwStackSize, UIntPtr lpStartAddress, // raw Pointer into remote process IntPtr lpParameter, [...] read more
c#
luac
0votes
0answers

qemu-system-arm with sabrelite does not recognize mmc without initrd

I extracted zImage and initrd from the OpenSUSE image for sabrelite and use it to start qemu-system-arm generally successful. But i detect that the initrd execute 2 times, even with the parameter "noinitrd". But without the qemu-system-arm paramater "-initrd initrd" the mmc (sdcard) will not be recognized and it is [...] read more
arm
qemu
initrd
0votes
2answers

Bitwise xor 0xFFFFFFFF?

I couldn't wrap my head around this: def expr(a): return ~(a ^ 0xFFFFFFFF), a ^ 0xFFFFFFFF, ~a, a print(expr(0xFFFFFFFF)) print(expr(1)) print(expr(0)) print(expr(-1)) I understand ~a means two's complement of a, but a ^ 0xFFFFFFFF also flips all the bits, but python will interpret it as a large number. I know [...] read more
python-3.x
bit-manipulation
xor
twos-complement
0votes
1answer

STM32F4 ADC with DMA 7 Channel regular group isn't working

I'm trying to setup my STM32F407-Discovery board to read multiple ADC channels from ADC1 using the DMA controller. It's possible to read one value without using DMA. When DMA is enabled only channel 1 is converted. The other array-elements are filled with 0. Unfortunately I cannot find my mistake because [...] read more
c
stm32
dma
adc
0votes
0answers

Enable wifi wlan adapter Ubuntu 20.04 LTS on Raspberry Pi 3 Model B

I have a Raspberry 3 Model B which has a BCM43438 wireless LAN and Bluetooth Low Energy (BLE) on board and recently installed Ubuntu 20.04 LTS. Thanks in advance for looking and let me know if Ubuntu 20.04 on RPI3 does not support wifi at this time. I've read a [...] read more
raspberry-pi3
ubuntu-20.04
0votes
2answers

How do I compile a wxWidgets Hello World app with CLion and the MSVC compiler toolchain without errors?

I am attempting to compile a basic wxWidgets (wxWidgets version 3.1.3) Hello World app with CLion and the MSVC (Visual Studio 2017 Community edition) compiler toolchain. Using pre-compiled binaries available at https://www.wxwidgets.org/downloads/. See the first Download Windows Binaries button under Latest Development Release: 3.1.3. I am using the 64 bit [...] read more
c++
visual-studio
cmake
wxwidgets
clion
0votes
3answers

System Error Code 0x32 when trying to attach debugger to calc.exe

I am currently learning how debuggers function and I am trying to program one myself following the book 'Gray Hat Python' by Justin Seitz. I am quite new to python and using the Windows API so any help is appreciated. I am using python 2.7 and Windows 10 64bit (in [...] read more
python
ctypes
0votes
1answer

showTimePicker A RenderFlex overflowed by 14 pixels on the bottom when using theme

> Hi, i have an issue with the showTimePicker dialog, the dialog bottom is overflowed by 14 pixels. I think i have done something wrong in ThemeData, when i remove theme the everything works fine. enter image description here [https://i.stack.imgur.com/9vEkll.png] import 'package:flutter/material.dart'; void main() => runApp(new MyApp()); class MyApp extends [...] read more
flutter
0votes
1answer

How to change the colour of the container that wrapped inside tab in flutter

enter image description here [https://i.stack.imgur.com/Myv5a.png] Hi, is there any ways to change the container colour when I switch tab inside a TabBar in flutter? The tabBar did not allow me to put a child inside the tab and return error, hence I wrap a container inside the Tab and used [...] read more
flutter
flutter-layout
0votes
0answers

STM32F1 write/read flash memory, cortex M3

I need to write/read flash memory in my blue pill board (stm32f103c8t6) and I followed this tutorial https://www.youtube.com/watch?v=BKgh896Bj8Q&t=32s but I used Keil uVision 5 IDE and I had this error " #error 167: argument of type "uint32_t" is incompatible with parameter of type "const char *" " Here is the [...] read more
c++
c
stm32
keil
stm32f1
0votes
0answers

Why when I set an OWNER RIGHTS ACE, does it get inheritance flags that I didn't set?

I'm trying to tighten the security on a Windows process, by overriding the process owners ability to further alter the DACL on the process. Having created the process with CreateProcessAsUser() I then proceed to get the existing DACL from it like so: CDacl procDacl; if (AtlGetDacl(hProcess, SE_KERNEL_OBJECT, &procDacl)) { //.. [...] read more
c++
windows
process
permissions
atl
0votes
0answers

How can I display a popup with additional buttons?

I am programming an App that should be used to drive an RC car. It is working mostly, but I have problems with a popup. When I click a Button from the activity_main.xml (popupButton) a popup with three buttons should appear and I want to use onTouchListeners on these buttons. [...] read more
java
android
xml
android-studio
0votes
1answer

OS resets on far jump after disabling paging

I'm working on modifying a routine that switches to and from realmode to perform a BIOS interrupt, but running into issues with paging. I had it working prior with no paging, but now that my OS uses paging, I need to disable it before entering realmode (and enable it after). [...] read more
x86
paging
gas
osdev
intel-syntax
0votes
2answers

Widget not changing on Tap in Flutter

So I am trying to build an Instagram like image editor with all the functionality. I wanted to switch between a text field and a simple Text Widget on tapping on either of them. I found an example online but it does not work in my case. class _StateTextFieldState extends [...] read more
android
flutter
flutter-layout
0votes
2answers

How to pre-define propeties in classes Flutter

I have created a CardText as a stateless widget and I will use it whenever I would be needing it. But I have a problem. As y'all can see, there are properties that I haven't marked as @required. What I want is these properties have a pre-defined value. Like, suppose [...] read more
flutter
0votes
0answers

Add a new interface

I want to add a new interface by NETLINK. Unfortunately I did not find any example. My code always ends with an error. I want to add a simple interface "dummy0" (as $ip link add dummy0 type dummy) void CreateIfc(const char * name) { struct { struct nlmsghdr nh; struct [...] read more
netlink
0votes
2answers

How to make a Card lies between Body in flutter

enter image description here [https://i.stack.imgur.com/a6I89.png] Anybody how to do the layout similar to the image? I am having difficulty on the CardView and it position is lies between the body. I am still consider quite new to Flutter, having some difficulty in UI part. Full code is as below: Widget [...] read more
flutter
flutter-layout
0votes
0answers

Binary XML file line: Duplicate id , tag null, or parent id with another fragment for androidx.navigation.fragment.NavHostFragment

I am working on an application in which I am having a drawerlayout and inside which I have a fragment.I am trying to use the jetpack navigation but the fragment gets the IllegalArgumentException issue.The code and the issue is as under <?xml version="1.0" encoding="utf-8"?> <layout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" xmlns:bind="http://schemas.android.com/apk/res-auto"> <androidx.coordinatorlayout.widget.CoordinatorLayout [...] read more
android
android-layout
android-fragments
navigation-drawer
0votes
1answer

picorv32 risc-v implementation in vivado 2018.2

This is the core:https://github.com/cliffordwolf/picorv32 I'm having a problem implementing the core in vivado. I have installed the riscv gnu toolchain and I am sure that it works ok, I modified the Makefile ($TOOLCHAINPREFIX). I ran the makfile's make firmware.hex (from the scripts/vivado folder) and then I ran the make synth_system [...] read more
c++
c
verilog
hdl
vivado
0votes
0answers

Akka threads constant in futex_ state -- Is this normal?

I have an Akka program with threads that are spending most of their time in the futex_ state. This is from an Akka program that isn't doing much. I am not familiar with the internals of Akka, so I'm not sure if this is normal or not. F S UID [...] read more
scala
akka
0votes
0answers

AssemblyScript array access causing Memory Out of Bounds

I am trying to access elements of an Array<u32> in AssemblyScript. I initialize and fill my arrays as follows: let totalSize: u32 = 512; let leaderPtsX: u32[]; let leaderPtsY: u32[]; let leaderPtsType: u32[]; export function createPoints(): void { leaderPtsX = new Array<u32>(); leaderPtsY = new Array<u32>(); leaderPtsType = new Array<u32>(); [...] read more
arrays
assemblyscript
0votes
2answers

Can't run here-maps sdk Flutter example

I spend a whole weekend trying to run an example of here sdk with Flutter. Tried on both available versions 4.3.0.0 and 4.3.1.0. I followed this https://developer.here.com/documentation/flutter-sdk-navigate/4.3.1.0/dev_guide/topics/quick-start.html Tried with the newer flutter stable version (1.12.13+hotfix.9), tried with the same version of the guide (1.12.13+hotfix.5). I'm just trying to reach anyone [...] read more
here-api
0votes
1answer

How can x & 0xffffffff produce more than 32 bits?

THE SHORT SUMMARY I would expect n & 0xffffffff to yield a 32-bit number, not more. But it's yielding a 64-bit number. Why? THE DETAILS In an Android (Java) app I have the following line of code: hash = ((hash ^ b) * FNV_PRIME) & 0xffffffff; When logging the value [...] read more
java
bitwise-and
0votes
1answer

EditText ,Entered text not visible full

A sample code where i need to have a Edit Text in a Grid Layout Programatically .But when the text are entered in the app ,Only the small bottom portion of text is visible .The text is larger than expected. I need the edit text with text as shown in [...] read more
android
android-edittext
0votes
0answers

STM32 Leaving DFU mode, code doesn't start

So for this question, I'm using stm32l4 device. It is a Cortex M4. I've been developing with stmcubemx and Kiel compiler. I have a program that can jump to the stm32 provided dfu mode. That works great. I can update the code using DfuSe Demo. I've run into this issue [...] read more
c
stm32
dfu
0votes
0answers

Edit text created in Grid Layout any Text typed not visible properly

A sample code where i need to have a Edit Text in a Grid Layout Problematically .But when the text are entered ,Only the small bottom portion of text is visible .The text is larger than expected. I need the edit text with text as shown in image which is [...] read more
android
android-edittext
0votes
0answers

Why are videos in android webview playing in Android 8 and below but not in 9 and above?

I have been working on an android app that plays videos hosted on a remote server in Web-view. The app is working perfectly except on android 9 and 10 releases where its acting like the link to the videos is breaking. see the image showing after attempting to play the [...] read more
javascript
java
android
html
0votes
2answers

How to publish odom (nav_msgs/Odometry) from MD49 encoders outputs?

I am using MD49 Motor Drive with its motors https://www.robot-electronics.co.uk/htm/md49tech.htm http://wiki.ros.org/md49_base_controller How to subscribe (encoder_l and encoder_r) from md49_base_controller package and publish (vx , vy ,and vth ) as a form odom (nav_msgs/Odometry) ? There are two problem: 1-The first is that the encoders outputs are not correct "the package [...] read more
ros
robot
odometry
0votes
0answers

ESP32 RC car project issue

im using nipplejjs like virtual joystick by sending json request to esp32 to remote a rc car with to dc motors the front motor is for direction and the back motor for speed the fonction rorat hendle the json request i retrive the (distance , angle , degree ,type ) [...] read more
loops
arduino
esp32
arduino-c++
0votes
2answers

Toggle between LIGHT and DARK theme (flutter_neumorphic: ^2.0.0)

I use flutter_neumorphic: ^2.0.0 package to give my app a cool look and I like to add a toggle to switch between LIGHT and DARK. Unfortunately I'm new to coding and I can't do this toggle button by my self, can you help me please. Thank you import 'package:babysoundtrips/screens/sound_screen.dart'; import [...] read more
flutter
themes
0votes
1answer

scrolling to the top when typing on TextField on Flutter

I added TextFormField on SliverPersistentHeaderDelegate. After scroll to the middle/bottom and then typing on to the textField, SliverList automatically come to the top. How do I disable this? Full Code. class MyWidget extends StatelessWidget { static const String route = '/myWidget'; @override Widget build(BuildContext context) { return Scaffold( body: Container( [...] read more
flutter
dart
flutter-sliver
0votes
0answers

flutter crashing Attempt to invoke virtual method

I'm facing weird issue that make app crashing in production mode and it's happened once time and don't happened if I try same action I have did , so when try add item in firebase it's crashing and if return try same item in same condition maybe didn't crashed but [...] read more
android
firebase
flutter
0votes
1answer

How to use or set "on Tap" for Bottomnavigationbar

I am really new at flutter. I need a tap on bottomnavigationBar which will open a new page. But where should I use onTap? On Top (body) I have an other Navigation(Tabbarview). Why I dont have an "onTap" inside the BottomnavigationBar bottomNavigationBar: SnakeNavigationBar( style: SnakeBarStyle.floating, backgroundColor: Color(0xffFFFFFF), snakeColor: Color(0xff3f51b5), currentIndex: [...] read more
flutter
dart
0votes
0answers

"Segmentation fault (core dumped)" Assembly and c linked program

######## # int mycompare( int size, int x[], int y[] ) # .text .global mycompare mycompare: pushl %ebp movl %esp, %ebp subl $4 , %esp movl $0 , -4(%ebp) movl 12(%ebp), %edx # int x[] movl 16(%ebp), %ebx # int y[] mov $0, %ecx ciclo: cmp 8(%ebp) , %ecx je [...] read more
c
assembly
x86
calling-convention
0votes
0answers

CubeHash. Pure PHP implementation. Multibyte block issue (CubeHash160+16/32+160-256)

I'm newbie in cryptography. I'm trying to implement CubeHash hashing function on pure PHP. I've ported some JS-version (32-bit) to PHP (64-bit), but I'm not able to implement CubeHash with param b when it is grater than 1 (block size is grater than 1 byte). Please, help me. run online: [...] read more
hash
sha-3
0votes
0answers

How to extract a widget that sets the state

I have a DataTable, and I want to extract the widget because I use it all across my app. The DataTable has the functionality to order the column pressing on the column name. I am able to make work all perfectly, but I am not able to understand how can [...] read more
flutter
dart
0votes
0answers

How do I project shadows in Arcgis Runtime for Java

I'm using the Esri Arcgis Runtime for Java. I'm creating "waypoints" in 3d space and it's hard to judge their distance from the ground. Adding a shadow would be useful. I've set the time to January noon, but no shadow is shown. The lines and points are Graphic Symbols, not [...] read more
java
opengl
maps
esri
arcgis-java-api
0votes
1answer

Flutter android App crashes when trying to debug after signing release

I am new to flutter and am building a flutter app as part of a school project. My team and I are building an ios, android, and web app releases and I am tasked with generating and signing my app bundle to release in google play. I was able to [...] read more
java
android
flutter
gradle
apk
0votes
0answers

WTSQueryUserToken() gives ERROR_PRIVILEGE_NOT_HELD

I have very common bug while call WTSQueryUserToken(). It returns false and GetLastError() show me ERROR_PRIVILEGE_NOT_HELD. I tried set privileges(return OK) but i see same problem calling WTSQueryUserToken. LUID luid; bRet = LookupPrivilegeValue(NULL, SE_TCB_NAME, &luid); if (!bRet) { hr = GetLastError(); return hr; } TOKEN_PRIVILEGES adjTokenPrivileges;// = { 0 }; [...] read more
c++
windows
winapi
0votes
1answer

Flutter: Firebase Google Auth not working

I've tried building an app with a google login. Actually everything is working except after I have selected my google account it isn't switching to the next side. Moreover it just "reloads" the sign-in page. So how can I solve this problem that I get to the new page after [...] read more
firebase
flutter
firebase-authentication
google-authentication
0votes
0answers

Use a third party library in C++ Windows MSVC

I am kind of a newbie in C++. I am struggling using a third party library. I am sorry if this sounds obvious to many. However, if anyone could help that would be nice. Thanks a lot I am trying to compile and use a third party library called XXXX. [...] read more
c++
windows
cmake
clion
linkage
0votes
4answers

Flutter Drop DownMenuItem Widget

I want to develop a drop down button in Flutter. But I am getting Following Error. ════════ Exception caught by widgets library ═══════════════════════════════════════════════════════ The following NoSuchMethodError was thrown building DefaultTextStyle(debugLabel: (englishLike body1 2014).merge(whiteMountainView body1), inherit: false, color: Color(0xffffffff), family: Roboto, size: 14.0, weight: 400, baseline: alphabetic, decoration: TextDecoration.none, softWrap: wrapping [...] read more
flutter
drop-down-menu
flutter-layout
0votes
1answer

slow hashing (sha256) on uboot 2009 (iMX25 processor)

Below calculation is done with uboot (2009 an older version) on iMX25 processor. I am running sha256_process() function (sha256.c) under uboot to process 50Mbytes of data to get the hash. It takes more than 100sec to complete the calculation. While the same hashing takes no time if run with openssl [...] read more
hash
u-boot
0votes
1answer

firebase database snapshot crashes when i add 2 datasnapshots to look after

i am using firebase database and wanted to match a value (the schoolcode) of the user being added to contacts with current users value ( schoolcode) and when i added the code user1.getSchoolCode it started crashing any ideas? if i pass just a simple string like if (user.getSchoolcode().equals("001")) { users.add(user); [...] read more
android
firebase-realtime-database
0votes
0answers

AMD Ryzen 5 3600 + Ubuntu 20.04 problems

I have Ryzen 5 3600, Gigabyte X570 GAMING X and Radeon RX 580 Series. I installed Ubuntu 20.04 and it is loaded with kernel parameter acpi=off but now system recognize only 1 core(lspcu, cut /proc/cpuinfo, nproc). When I remove 'acpi=off' - Ubuntu freezes on login screen. dmidecode -t processor recognize [...] read more
acpi
amd-ryzen
core
0votes
0answers

Can not use full capacity of installed ram

I have Aorus Master X570 with Ryzen 9 3950X and separate graphics card (ASROCK Radeon RX 5500 XT Challenger D 8G in PCIe 4 16x slot) I have installed 4x 32GB DDR4 corsair modules (VENGEANCE RGB PRO 64GB (2 x 32GB) DDR4 DRAM 3000MHz C15 Memory Kit) to it which [...] read more
memory
motherboard
0votes
2answers

Video from vhs via USB capture device on Linux

I want to transfer video from a VHS tape to my computer with Arch Linux, using a USB capture device that comes with Roxio Easy VHS to DVD, which I recently bought. I tried to plug in the device, and it was properly recognized. From /var/log/messages.log, em28xx #0: Identified as [...] read more
linux
video
video-capture
0votes
3answers

Disable/pause AHK script while game is minimized

I have an AHK script that allows me to bind joystick presses to keystrokes. These keystrokes are used to trigger functions in a trainer that runs in the background while I play a game. The script works fine, but the problem is that the joystick bindings send unwanted input to [...] read more
script
autohotkey
0votes
0answers

Linux booting stop at Starting kernel when using Yocto build image with SD card

I'm tring to porting linux on imx6 PDK B/D(imx6-qaudplus-sabreauto) with Yocto build image. my customize sdcard image (mixed imx6/8)= * u-boot.bin(iMX6 Yocto bitbake result) * zImage(iMX6 Yocto bitbake result) * .dtb file(iMX6 Yocto bitbake result) * rootfs(iMX8 Yocto bitbake result) but stop at Starting kernel... and no more console printed. [...] read more
linux
boot
0votes
0answers

I got a SIGILL and JVM crashed when I booted a java application with --agentpath:libxxx.so on AIX 7.1

My dynamic shared library complied with CPPFlAGS: -q64 -G. The compiler version is IBM XL C/C++ for AIX, V11.1 (5724-X13) Version: 11.01.0000.0024 when it was started, then crashed, here is part of information in hs_err*.log. It seems that this error occurred by dlopen # # A fatal error has been [...] read more
crash
aix
jvm
0votes
0answers

Linux-Yocto, ARM: VFS: Cannot open root device "ubi0:root" or unknown-block(0,0):

I'm booting from NAND zImage and rootfs (UBIFS) to the ARM board (yocto-project building). global.bootm.image="/dev/nand0.root.ubi.kernel" global.bootm.oftree="/dev/nand0.root.ubi.oftree" global.linux.bootargs.dyn.root="root=ubi0:root ubi.mtd=root rootfstype=ubifs" The process is just erase, format UBI volume and write UBIFS. ubiformat /dev/nand0.root ubiattach /dev/nand0.root ubimkvol -t static /dev/nand0.root.ubi kernel 8M ubimkvol -t static /dev/nand0.root.ubi oftree 1M ubimkvol -t dynamic /dev/nand0.root.ubi [...] read more
linux
partitioning
root
yocto-project
0votes
0answers

debugging boltd and Dell TB16 on Dell Latitude 5491 and Xubuntu 18.04

Every now and then my Dell TB16 dock device stops working i.e. port replication is off, also the dock's white LED goes off. * OS: Xubuntu 18.04.2 LTS * Kernel: 4.15.0-54-generic #58 * System: Dell Latitude 5491 BIOS 1.8.1 05/23/2019 I've installed the thunderbolt daemon boltd but the boltctl command [...] read more
dell-latitude
xubuntu
docking-station
thunderbolt
0votes
2answers

Virtual machine has terminated unexpectedly during startup with exit code -1073741819 (0xc0000005)

I have installed VB on a new machine running Windows 10 Pro 1803 (build 17134.556) and running any machine instance always fails with this error: The virtual machine 'linux' has terminated unexpectedly during startup with exit code -1073741819 (0xc0000005). More details may be available in 'C:\Users\osama.shabrez\VirtualBox VMs\linux\Logs\VBoxHardening.log'. Result Code: E_FAIL [...] read more
virtualbox
0votes
0answers

Cannot down-clock AMD GPU on Manjaro

So, I have an RX590 FatBoy, which albeit very nice comes factory overclocked which is bad, since it's cooling isn't up to par. On Windows, I lowered the voltages via the Catalyst app and voila - all overheating problems were gone while retaining all the performance I needed. On Manjaro [...] read more
linux
overclocking
manjaro
amd-graphics-card
0votes
2answers

External SSD Drive won't mount on OSX

A colleague at work has a Kingston 240GB SSD drive which has come out of a now dead computer. We want to be able to recover some data from it (no backups sadly) however the drive won't mount properly. I am using an Anker USB3 external HDD enclosure which I [...] read more
macos
hard-drive
ssd
external-hard-drive
data-recovery
0votes
1answer

UBI layout volume not found

I am following Bootlin's embedded Linux training which aims to put an embedded Linux system on an Atmel SAMA5D4 Xplained board (theory slides, practical lab instructions) and I am stuck a putting the whole system on the NAND flash. They ask me to put the DTB, the kernel, the root [...] read more
linux
embedded-linux
0votes
1answer

Why isn't my forced MAC address change working (Raspberry Pi)?

I'm working with Raspberry Pi Zeros on a subnet. I bought external Ethernet adapters for each one to connect them to one another. Unfortunately, these ethernet adapters all came with the exact same MAC addresses, making communication between the Pis near impossible. Because of that I've tried forcing a change [...] read more
linux
networking
raspberry-pi
subnet
0votes
0answers

System hang and black screen BugCheckCode 278 and BugCheckCode 0

For past two days the system would hang up or enter black screen and won't restart right away (after pressing restart button) but at one instant it generated Blue Screen (BugCheck Code 278). This issue has been occurring only during gaming(for one game during loading screen for other mid game [...] read more
windows-7
freeze
bsod
crash
0votes
1answer

Dell desktop falls asleep in a couple minutes, ignores power/screen saver settings

My parents' Dell Inspiron tower goes to sleep within ~3 minutes of inactivity, despite every power setting in Windows (screen saver, turn off screen, go to sleep, turn off hard-disk, etc.) either turned off or set to 60 minutes. This answer claims that Dell has been known to bundle their [...] read more
windows-10
sleep
power-management
dell-inspiron
0votes
0answers

Windows 10 Explorer crashes when opening "new" context menu, need help deciphering dump file

As the title says, whenever I attempt to open the "new" sub-menu of the right click context menu in Windows 10 explorer locks up and then crashes a few moments later. This issue only appeared in the last couple days and I suspect it is a result of the Creator's [...] read more
windows
windows-explorer
windows-update
context-menu
0votes
1answer

Two openvpn connections: one with redirect-gateway and a second one for private network

I have a personal VPN that I use as a default gateway for all Internet traffic when I'm on the road. This works great and I have no problem. I also have a work VPN, which I need to connect to reach machines on their private network. What I want [...] read more
networking
routing
openvpn
0votes
0answers

different speed ssd partitions

I have Samsung NVMe SSD 960EVO 250GB disk and it gives me some weird result when testing read speed using hdparm -tT. Speeds before trim /dev/nvme0n1: Timing cached reads: 24486 MB in 2.00 seconds = 12256.70 MB/sec Timing buffered disk reads: 5502 MB in 3.00 seconds = 1832.95 MB/sec jkalmar@supercomp:~> [...] read more
linux
ssd
performance
opensuse
0votes
0answers

Kworker thread has high CPU usage

I have a kworker thread with high cpu usage, which is causing my touchscreen to be very lag-y and unresponsive. Running a beaglebone with Debian. uname -r 4.1.15-ti-rt-r43 pid user pr ni virt res shr s %cpu %mem time+ command 90 root 20 0 0 0 0 R 34.7 0.0 [...] read more
linux
cpu
kernel
linux-kernel
threads
0votes
1answer

HP Proliant getting down with Critical error LED Blinking - what then?

After a few hours of correctling working, our proliant Server stop calculus with the System Healt LED 12 blinking, which according to the documentation ( http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c01706108-8.pdf ) is the sign of a "Critical system failure detected (processor, memory, regulator, thermal event, fan, NMI)" (page 96). SSH is then lost. We [...] read more
linux
ubuntu
memory
0votes
0answers

PPTP error 619 when accessed externally

I set up a PPTPD server on Arch Linux. If I connect to the VPN using the server's local IP (192.168.1.107), it works, but if I connect to the VPN using the external IP address, then the client results in error 619. Any help would be greatly appreciated! Output of [...] read more
linux
networking
vpn
arch-linux
pptp
0votes
2answers

Postfix SMTP SSL config: Can't send email but can receive it with SSL

I am trying to finish configuring my postfix/dovecot mail server that sits behind my home's router/firewall. I'm on Mint/Ubuntu 12.04. I'm close. I can connect/retrieve emails via SSL but can only send email from a client when not using SSL, just username/password. If I attempt an SSL connection with the [...] read more
email
ubuntu-12.04
ssl
postfix
dovecot
0votes
1answer

Recieved BSOD after restart

When i start my laptop i get this error "DPC_WATCHDOG_VIOLATION" i really donyt know what is the issue... can some one help.... -------------------------------------------------------------------------------- DUMP FILE Microsoft (R) Windows Debugger Version 6.3.9600.17336 AMD64 Copyright (c) Microsoft Corporation. All rights reserved. Loading Dump File [I:\121115-55411-01.dmp] Mini Kernel Dump File: Only registers and [...] read more
windows-8
bsod
0votes
2answers

Windows 8.1 dual-boot with openSUSE boot failure

I already have Windows 8.1 on my newly built PC and wanted to dual-boot with openSUSE. I wrote the install image to a USB, but the install kept hanging so I used network install (also written to a bootable USB). Before install I created a separate 100 GB partition on [...] read more
linux
boot
windows-8.1
partitioning
opensuse
0votes
0answers

Suspend does not work on Debian Jessie

Today I observed that suspend sometimes does not work properly in freshly installed Debian Jessie. After executing suspend (Alt + Shut Down button) the following message appears on black screen: Loading, please wait... The syslog is as follows. I kindly as for any suggestions. Jul 12 18:53:10 svarog kernel: [ [...] read more
linux
debian
suspend
0votes
0answers

pm-hibernate does not turn off system

I'm trying to make pm-hibernate to work on my Ubuntu 14.04 system. When I invoke sudo pm-hibernate display turns off and I can't do anything anymore but computer does not turn off. All I have found in logs is: Mar 17 21:40:25 dmitry-pc kernel: [ 0.000000] PM: Registered nosave memory: [...] read more
linux
ubuntu
hibernate
ubuntu-14.04
0votes
1answer

Mono is crashing on MAC OS X with Keepass 2.23

Mono is crashing on MAC OS X (10.8.4) with Keepass 2.23 while accessing password database. Using keepasshttp with firefox. Any workaround for this ? =========================================================== Process: mono-sgen [7586] Path: /usr/bin/mono Identifier: mono-sgen Version: ??? Code Type: X86 (Native) Parent Process: bash [7194] User ID: 501 Date/Time: 2013-08-15 13:34:28.515 +0530 OS [...] read more
macos
keepass
mono-framework
0votes
2answers

Why can't I connect to an AFP server over VPN on OS X 10.8

I have set up a VPN connection on my MacBook Pro OS X 10.8.5 laptop, to my office network so I can access my AFP file server from home. The VPN connection appears to be working correctly. The Status reads Connected and I am getting both a connect time and [...] read more
macos
networking
mac
vpn
afp
0votes
1answer

Bluetooth / Bluez: No reply to ping over bnepX interface

I have trialed to use Network, NAP profiles on Bluetooth. On Host, xUbuntu 13.04 I have followed as here. This Host or XUbuntu machine is behind proxy & runs on virtual machine. It is installed with Bluetooth version 4.101 On embedded board, ping 173.194.112.211 responds as below: PING 173.194.112.211 (173.194.112.211) [...] read more
linux
networking
wireless-networking
bluetooth
0votes
0answers

command to write to physicaldrive?

I have a bat file that we use to write meaningless data to a harddisk. But I dont know what exactly it means... Here is the command: dtlite2 of=\\.\physicaldrive1 bs=256k limit=200m passes=1000 disable=cache pat_part1=0xffffffff pat_part2=0xffffffff pat_part3=0x0 pat_part4=0x0 dlimit=2048 platform is windows. This is run from a bat file. read more
windows
hard-drive
writing
0votes
1answer

Laptop computer grahpic opens and loads slowly

So i have this laptop whenever i open a folder, close a folder, or do anything graphical it runs slowly. and when i say slow i mean you can actually SEE in slowmo the animation running. Say for instance you want to open a folder. you can see the full [...] read more
windows-7
graphics-card
graphics
0votes
2answers

Wine crashes when trying to run portable version of Firefox

I think there is something wrong with my Wine setup, but I don't know how to fix it or even what it is. Others have gotten this program to work without problems in Wine. This is the console output that I get from Wine before it crashes. > fixme:system:SetProcessDPIAware stub! [...] read more
linux
ubuntu
firefox
ubuntu-10.04
wine
0votes
1answer

OSX Panic about once a week

I am running OSX 10.6.6 and I this is the second kernel panic in 2 weeks. Here is the log that gets sent to Apple. Help! Model Name: MacBook Pro Model Identifier: MacBookPro6,2 Processor Name: Intel Core i7 Processor Speed: 2.66 GHz Number Of Processors: 1 Total Number Of Cores: [...] read more
macos
kernel-panic
0votes
1answer

xorg.conf: Why does this have no effect?

Here is my xorg.conf file. The problem is that my resolution setting 1600x900 is getting ignored. The resolution keeps popping to 1280x1024 Edit The resolution comes up as 640x480 after unplugging the physical monitor. When my file gets ignored, the system seems to read my monitor to find it's capabilities [...] read more
resolution
xorg.conf
solaris-10
0votes
1answer

Client object identifier in BIND 9 query logs

The BIND 9 Administrator Reference Manual e.g. for version 9.14.11 or 9.17.1 states in * 5.2. CONFIGURATION FILE GRAMMAR * The category Phrase * queries > The query log entry first reports a client object identifier in @0x<hexadecimal-number> format. This term has not been mentioned anywhere else in the ARM, [...] read more
bind
0votes
0answers

Supplemental to Need to replace the HDD on a single disk system

This question is a follow on to my original. The situation is a host with a single HDD must be cloned to a larger HDD over the network. I ran a couple of tests of a clonezilla live remote transfer from a 500Gb HDD to a 1000Gb HDD. The second [...] read more
centos6
lvm
clonezilla
0votes
2answers

Can't connect to a postgres server

I have a strange situation, I have created a second postgres server that will eventually become a slave to my current master, anyway for testing purposes I have currently installed postgres, and testing connections from other hosts. In my postgresql.conf I have a nice an easy:listen_addresses = '*'# what IP [...] read more
postgresql
freebsd
0votes
1answer

Using tc filter together with Snort

I need to add delay to packets after doing some modification using the SNORT inline module. However, I cannot seem to get the packets to match a filter using tc filter ... It always matches the default filter. The commands I am using are stated below: sudo tc qdisc del [...] read more
tc
snort
0votes
0answers

Samsung NVMe disappears when server on average to high load

Hello to the community! Let me get into the details of the problem itself. We have a total of 6 SuperMicro Servers in a cluster. The problem occurs only in 3 them, which are the newest generation. The same thing happened on all three nodes (different times, same day). I [...] read more
xen
glusterfs
supermicro
pci-express
nvme
0votes
1answer

ipnat.conf - map and rdr won't work!

I can't put my mind around it, before reboot I was able to ssh in from outside to my jail and right now I can't! I even rebuild the whole system and even that didn't help:( anyone have any ideas? su-3.2# cat /etc/ipnat.rules map fxp0 lama -> 0/32 rdr fxp0 [...] read more
freebsd
nat
0votes
1answer

"ip rule to" works but "ip rule fwmark" fails - why?

I have a CentOS 6 (kernel 2.6.32) router with working OpenVPN client on it, and I want to redirect some traffic via VPN server. Client (192.168.60.159) sends request to router (192.168.60.6:1443), and router redirects it via VPN connection (10.200.0.54) to server (185.61.149.21:443). I've created a specific routing table tunde and [...] read more
iptables
iproute2
0votes
2answers

RDP in 2008 R2 domain no longer working - possible Kerberos issue

Everything was working fine and no changes were made. For no apparent reason, we can no longer RDP to any domain computers except for the domain controllers themselves. This includes Windows 7 clients and non-controller 2008 R2 servers. After entering the password, we immediately get the following error message: "The [...] read more
windows-server-2008
remote-desktop
rdp
kerberos
0votes
2answers

How to configure IPsec (strongswan) interface, so that only assigned interface gets virtual ip?

I have already used this configuration a bunch of times and I haven't had this problem before. Basically I establish the tunnel connection, but after connecting (with swanctl --initiate --child ch_vti0 --ike ch_vti0) I get my virtual ip assigned on the appropriate interface vti0, but also I have the same [...] read more
networking
ipsec
strongswan
bug
0votes
1answer

HAProxy 1.5.4 Performance Tuning

I currently have HAProxy 1.5.4 setup using keepalived for HA on centos 7 using IPtables to create a transparent load balancer to load balance a number of cisco WSA proxy servers for internet filtering on an infrastructure of around 15,000 users running on vmware and cisco UCS with one GB [...] read more
haproxy
0votes
0answers

ipfw dummynet per ip fair traffic shaping

I want to shape traffic in such way, that no specific user could exhaust WAN connection that much so other users would be affected. I have ISP link with 100Mbits/s bandwidth and sometimes some users can exhaust it when they download something from internet or via vpn from smb in [...] read more
firewall
freebsd
ipfw
0votes
1answer

Nginx IP transparency reverse proxying but upstreams need to be able to initiate connections to Internet

I have a docker swarm consisting of an Nginx service that serves as a reverse proxy for a couple of other upstream services, web and mail. Both web and mail service need to connect to an external service via HTTPS in order to perform authentication. The mail service needs to [...] read more
linux
networking
nginx
iptables
docker
0votes
0answers

IPSec tunnel causes huge packets lost when pinging gateway and other machines

My Ubuntu machine is 10.0.0.15, my Windows machine is 10.0.0.10. My gateway, that routes the Internet traffic to the LAN is 10.0.0.1. When I ping the gateway from my Windows machine everything is fine - I get every single packet back. Same holds true, when I ping the Ubuntu machine [...] read more
networking
linux-networking
ipsec
ubuntu-18.04
icmp
0votes
1answer

IPVS traffic doesn't seem to go through netfilter on the director node

I have the following setup on a director node running keepalived: * native IP 10.65.5.72 * VIP 10.65.5.230 * keepalived DR mode enabled for port 80 and 443 I was debugging a problem where I couldn't access the IPVS service from the director node itself, and during that process noticed [...] read more
iptables
ipvs
0votes
0answers

Jboss EAP5 fails to start on Linux

I am trying to start JBoss EAP5 server on Linux CentOs machine. However, the process gets killed abruptly and I get nothing in the boot.logs. Please find the logs below: Server Library URL: file:/usr/share/jboss-5.1.0.GA/server/default/lib/ Server Log Dir: /usr/share/jboss-5.1.0.GA/server/default/log Server Native Dir: /usr/share/jboss-5.1.0.GA/server/default/tmp/native Server Temp Dir: /usr/share/jboss-5.1.0.GA/server/default/tmp Server Temp Deploy Dir: [...] read more
linux
jboss
0votes
0answers

Why can't I ping 127.0.0.1 from some network interfaces?

I'm on OS Sierra. This is (part of) what I get on ifconfig ... en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether 98:01:a7:b4:91:63 inet6 fe80::4e:52ae:9fa8:2e6c%en0 prefixlen 64 secured scopeid 0x5 inet 192.168.1.33 netmask 0xffffff00 broadcast 192.168.1.255 nd6 options=201<PERFORMNUD,DAD> media: autoselect status: active ... utun1: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1400 inet 10.161.136.55 --> 10.161.136.55 netmask 0xffffffff [...] read more
networking
netstat
ifconfig
0votes
1answer

RabbitMQ SSL connection works from an Ubuntu14.04 machine but not from a CentOS 6 machine

I have setup a rabbitmq ssl connection on my remote server as per the docs here: https://www.rabbitmq.com/ssl.html I am using java rabbitmqclient to connect to the remote server and sending a hello message to a queue on rabbitmq-server, the connection works fine from my local ubuntu 14.04 machine but does [...] read more
centos
ssl
java
openssl
rabbitmq
0votes
2answers

Run OpenVPN server on alias IP

I want to configure OpenVPN server that works on alias IP. I changed the client config to have alias IP as remote and added "local 188.xx.xx.55" in OpenVPN config which is our alias IP. Also set "netd_interface=188.xx.xx.55" which is again alias ip. When the VPN connects and I check my [...] read more
openvpn
ip-aliasing
0votes
1answer

RDS 2012 R2 some users are not able to logon after changed date and time on Connection Brokers

Due to a malconfigured NTP server of ntp.org, the date and time on all our servers and client was set to the date of tomorrow (1/1/2017 instead of 31/12/2016). We've manually changed the date back to the date of today on our Primary Domain Controller (PDC) and executed w32mt /resync [...] read more
windows-server-2012-r2
remote-desktop-services
0votes
1answer

How do I load balance outgoing connections with iptables and iproute2?

I have a server behind two public facing gateways INTERNET | | GW1 GW2 | | SERVER GW1's IP is 192.168.w.x, MAC aa:bb:cc:dd:ee:ff GW2's IP is 192.168.y.z, MAC ff:ee:dd:cc:bb:aa # note: w != y and I'm trying to load balance outgoing connections from the server. I've built upon pepoluan's solution [...] read more
iptables
load-balancing
iproute2
0votes
1answer

Two Azure VM clones have different processor

I have two Ubuntu 16.04 Azure VMs created from the same image, in the same region (WestEurope), configured to be the same size (Standard A1, 1 vcpus, 1.75 GB memory) and created at the same time (days of difference). Inspecting the CPU info they are completly different, one being a [...] read more
azure
0votes
1answer

Opcache not working properly

I got problem with Opcache. It's not working as I wish/desire.. This is my opcache configuration cat /etc/php/7.1/apache2/php.ini | grep opcache [opcache] opcache.enable = 1 opcache.enable_cli = 1 opcache.memory_consumption = 256 opcache.interned_strings_buffer = 16 opcache.max_accelerated_files = 8882 ;opcache.max_wasted_percentage=5 ;opcache.use_cwd=1 opcache.validate_timestamps = 0 opcache.revalidate_freq = 0 ;opcache.revalidate_path=0 ;opcache.save_comments=1 opcache.fast_shutdown = 1 [...] read more
apache-2.4
php7
opcache
0votes
1answer

Route ftp packets to one network interface, the rest to the other

I have an ubuntu 14.04 server with two NICs, each one connected to seldom routers, each with separated internet access. We want to redirect ftp ports traffic through the second interface, em1, and all the rest through the default interface p4p1. I have both interfaces up. I've followed the instructions [...] read more
iptables
routing
linux-networking
0votes
1answer

Windows Server 2012 R2 - Help finding failed logon attempts source

I'm seeking help for this issue that I'm having in our AD domain controller where a lot of security events are being logged due to failed logon attempts by a (former) domain user that has been disabled and subsequently deleted. I'm trying to pin-point the origin of these attempts but [...] read more
active-directory
windows-server-2012-r2
domain-controller
windows-authentication
eventviewer
0votes
2answers

Inconsistencies with Linux tc filter u32 matching on packet data payload - can someone explain?

I would just like some heads up on this as I really don't understand -why- this is the case. Further down is the TCPDUMP output (tcpdump -s0 -XXnni eth0 tcp port 80) of the 'HTTP' response a webserver gives when a normal GET request is made to it. What I [...] read more
linux
networking
filter
pcap
tc
0votes
0answers

Ubuntu Server 16.04 64bit had only 8Gb of RAM when 16GB are installed

I have one DIMM installed on a Lenovo x3550 M5 server. The OS is Ubuntu 16.04.2 64 bit uname -ra Linux hostname 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux free -hm gives: total used free shared buff/cache available Mem: 7.2G 238M 6.5G 20M 474M [...] read more
ubuntu
memory
0votes
1answer

Kerberos authentication ticket - Event ID 4768 - Audit failure

I am using kerberos to authenticate a user and its failing. Audit failure details in event viewer are following A Kerberos authentication ticket (TGT) was requested. Account Information: Account Name: HTTP Supplied Realm Name: TEST.COM User ID: NULL SID Service Information: Service Name: krbtgt/TEST.COM Service ID: NULL SID Network Information: [...] read more
windows-server-2008
active-directory
kerberos
0votes
2answers

4 TB external disk on Centos 5

I have an old server running CentOS 5(Kernel 2.6.18-92.el5). It is running a legacy application so I can't retire it yet. I had connected a 2 TB USB disk to it to take backups and the disk is almost full right now. I bought a new 4 TB disk but [...] read more
partition
centos5
fdisk
parted
0votes
1answer

OpenVPN block SMTP Access Server completely

I've tried almost all iptables rules to block smtp on openvpn server but still clients clients can access remote smtp servers on port 25. I'm using openvpn access server. It's creating two interfaces as0t0 and as0t1. All users assigned ips from 172.16.0.0/12. Please help me what rules can be written [...] read more
iptables
smtp
openvpn
0votes
1answer

Network configuration fault

I'm moving my router from Rpi with Rasbian to another pc device with ubuntu server 14. I have: - local network 10.0.0.0/16, with my router gateway 10.0.0.1 - lte usb device 192.168.8.1 in network 192.168.8.0/24 - lte usb device 192.168.10.1 in network 192.168.10.0/24 I have moved all network settings with [...] read more
linux
ubuntu
iptables
routing
0votes
1answer

Captive portal with iptables and local dns server

I'm trying to redirect all the browser's requests from my wifi interface wlan1 to a captive portal. I have a node web server running on my target on 10.4.30.34:4040. It has to redirect the browser directly to the web server, on the good port, like I entered "10.4.30.34:4040" in the [...] read more
iptables
dnsmasq
captive-portal
0votes
1answer

CentOS Development Server Crashing Frequently

I am running a development server on a fairly old version of CentOS 5. This server has been live almost constantly for the past five years ago, so has been pretty stable. A while ago, it crashed during normal operation. I restarted it and it crashed again after a few [...] read more
centos
centos5
server-crashes
0votes
1answer

unable to find driver - lamp debian

This is my php sample script: <?php try{ $db=new PDO('mysql:dbname=_mydb;host=localhost', 'root', 'xxxxxx'); }catch(PDOException $e) { echo "Error: ".$e->getMessage(); } ?> And I have returned: could not find driver Also: user@nbook:~$ php -i|grep PDO PDO PDO support => enabled PDO drivers => mysql PDO Driver for MySQL => enabled This is [...] read more
mysql
php
pdo
0votes
1answer

"No inittab file found" after reset

An old dedicated server (Debian with Raid1) wasn't responding today and now can't boot after manual reset. Last message is > No inittab file found. I still have access to filesystem via rescue system. Ran fsck and checked raid (both arrays are clean). Booting 'Debian GNU/Linux, kernel 2.6.26-2-amd64 Default' root [...] read more
debian
raid
boot
inittab
0votes
1answer

PBR with iptables

I know question was answered multiple times, but this situation a bit different. So here is what I have: * All users must user default gateway on eth0, except one * That one must only use gateway on eth1 and must not under any circumstances use eth0 Separately this things [...] read more
debian
iptables
routing
policy-routing
0votes
1answer

LAMP server kerberos config to authenticate against a read only Windows KDC in a dmz

Background: We have a number of AD networks (domains) that are connected through VPNs and have established AD trust relationships. We have an externally hosted web server and have configured seamless authentication for any user within the trusted network. This works but the presence of the VPN to an external [...] read more
apache-2.2
active-directory
kerberos
dmz
domain
0votes
1answer

iptables rules for lvs using piranha gui

I am trying to bulid an lvs system, where 202.141.81.239 is the virtual IP and 202.141.81.241 and 202.141.81.242 are the lvs routers.Ths system is working fine in our intranet but is not through internet. The following is my iptables configuration # Generated by iptables-save v1.4.7 on Tue Mar 25 12:30:26 [...] read more
redhat
lvs
piranha
0votes
0answers

iptables 1.4.12 invert and --u32

This line in a script: iptables -A jk2_ddos -m u32 ! --u32 "0x1c=0xffffffff" -j ACCEPT will result in this error: iptables v1.4.12: u32: option "--u32" cannot be inverted. This seems not to work in iptables 1.4.12. In older versions it worked. I need something that does the same. The problem [...] read more
linux
iptables
0votes
1answer

debugging smtp | ubuntu 12.04, postfix, dovecot

I cannot sucessfully connect to my smtp server from my mail client. I am getting the following errors in my /var/log/mail.log file Dec 21 15:08:04 pareto postfix/smtpd[11101]: SSL_accept:SSLv3 flush data Dec 21 15:08:04 pareto postfix/smtpd[11101]: read from B96D2180 [B96C1EB3] (5 bytes => -1 (0xFFFFFFFF)) Dec 21 15:08:04 pareto postfix/smtpd[11101]: read [...] read more
email
postfix
smtp
vps
dovecot
0votes
1answer

traffic shaping, prioritizing packets without using a bitrate ceil/max

I've written a script that shapes traffic into 3 pipes. The first pipe needs to be high priority and always be send first. This works perfectly now on 1 condition. I enter a correct ceil/max bitrate. This script is written to work an a device that will work with lots [...] read more
linux
networking
traffic-shaping
0votes
1answer

BAT file will not run from Task Scheduler but will from Command Line

I'm trying to run a BAT script from Task Scheduler in Windows 2008 R2 and it runs for 3 seconds and then stops. It says it successfully completes but I know it doesn't. I can run this script from the command line directly, and it runs just fine. The bat [...] read more
windows-server-2008-r2
task-scheduler
-1votes
0answers

Is there anyway to have holding down different buttons on a IR remote do different things?

I am new to arduino programming, so please do not just outright give the solution to me, I would like to learn a little as well. I know that holding down a button on my IR remote sends the code 0xFFFFFFFF. The only thing is that this is for holding [...] read more
arduino
infrared
-1votes
1answer

How to make the list view builder size to minimum

* I'm using list view builder inside a flexible widget with fit:FlexFit.loose but it occupying all the available space below, my requirement is, that list view builder need to take the minimun space(required space) if there are less items. * I tried with below code Dart pad Reference Code : [...] read more
flutter
dart
-1votes
2answers

Why doesn't my gradient noise generator work?

I tried to make a program that generates gradient noise for terrain generation. It's supposed to print array of numbers between 40 and 99 but it stops on this part: for(int k=16; k>1; k/=2) for(int y=Y; y<Y+16; y+=k+1) for(int x=X; x<X+16; x+=k+1) { tab[y+k/2][x]=rand()%(max(tab[y][x],tab[y+16][x])-min(tab[y][x],tab[y+16][x]))+min(tab[y][x],tab[y+16][x]); tab[y][x+k/2]=rand()%(max(tab[y][x],tab[y][x+16])-min(tab[y][x],tab[y][x+16]))+min(tab[y][x],tab[y][x+16]); tab[y+k/2][x+k/2]=rand()%(max(tab[y][x],tab[y+16][x+16])-min(tab[y][x],tab[y+16][x+16]))+min(tab[y][x],tab[y+16][x+16]); } When I remove [...] read more
c++
noise-generator
-1votes
1answer

switching between functions using an IR remote

I have bought a WS2812B Led Strip. I'm trying to controll it with a IR remote. it is all controlled by a arduino uno. I know the leds work and i know the remote works. I'm trying to pre-program a few animations on the remote. The code below is as [...] read more
arduino
arduino-uno
fastled
-1votes
2answers

How to make an arbitrary Microsoft FILETIME?

I would like to make an arbitrary Microsoft FILETIME. The algorithm is more important than the Microsoft programming language. For example if today is June 2 2016, I would like to calculate the FILETIME at midnight June 2016. Any help is greatly appreciated. [EDIT June 2 2016 5:09 P.M Here [...] read more
windows-7
date-time
algorithm
-2votes
0answers

Behaviour of __shfl_down_sync operation

My kernel for warp reduce looks like below #include <stdio.h> __global__ void reduce(int* var ) { *var += __shfl_down_sync(0xffffffff, *var, 16,32); *var += __shfl_down_sync(0xffffffff, *var, 8,32); *var += __shfl_down_sync(0xffffffff, *var, 4,32); *var += __shfl_down_sync(0xffffffff, *var, 2,32); *var += __shfl_down_sync(0xffffffff, *var, 1,32); } int main() { int c=22; int *dev_c; cudaMalloc( [...] read more
cuda
-2votes
1answer

Console bugging and bugged, evidently

It appears that a false file path has been installed on a home computer many of us use, that reroutes my emails from gmail, to an Entourage mail app that I do not use, and from my dock have no access to…. My question is, is this even possible, and [...] read more
macos
-3votes
0answers

Coding help requested

Hey so i started trying to make a project with my arduino (i dont really know how to code) and i just keep getting errors with my code is someone able to help me? here is what i have #include <SPI.h> #include <MFRC522.h> #include <IRLibAll.h> #include <Servo.h> #define SS_PIN 10 [...] read more
arduino
-4votes
1answer

is there any web crawler can get access to users region for download?

Actually I am using Httrack as a web crawler, can it use my credentials to access members area and download the zip files because they are restricted from public access. Thank you in advance. Update: After all the problem was with my IPV6 it must be disabled; with (Windows 8 [...] read more
web-crawler

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