Windows error 0xFFFFFFFF, -1

Is there anything special about -1 (0xFFFFFFFF) regarding ADC?

In a research project of mine I'm writing C++ code. However, the generated assembly is one of the crucial points of the project. C++ doesn't provide direct access to flag manipulating instructions, in particular, to ADC but this shouldn't be a problem provided the compiler is smart enough to use [...] read more

Android Canvas Redo and Undo Operation

I am working on a drawing project. My code is working perfectly other than canvas redo and undo operations. My undo operation removes paths from the paths ArrayList and saves to the undonePaths ArrayList, and the redo operation removes the last element from undonePaths and saves to paths. Here's my [...] read more

Nesting routes with flutter

I am trying to figure out good architectural solution for following problem: I have following First level routes that can also be referred to as layouts: /onboarding/* -> Shows onboarding layout /dashboard/* -> Shows dashboard layout /overlay/* -> shows slide up overlay layout /modal/* -> shows modal layout User is [...] read more

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

C macro to create a bit mask -- possible? And have I found a GCC bug?

I am somewhat curious about creating a macro to generate a bit mask for a device register, up to 64bits. Such that BIT_MASK(31) produces 0xffffffff. However, several C examples do not work as thought, as I get 0x7fffffff instead. It is as-if the compiler is assuming I want signed output, [...] read more

Python representation of negative integers

>>> x = -4 >>> print("{} {:b}".format(x, x)) -4 -100 >>> mask = 0xFFFFFFFF >>> print("{} {:b}".format(x & mask, x & mask)) 4294967292 11111111111111111111111111111100 >>> >>> x = 0b11111111111111111111111111111100 >>> print("{} {:b}".format(x, x)) 4294967292 11111111111111111111111111111100 >>> print("{} {:b}".format(~(x ^ mask), ~(x ^ mask))) -4 -100 I am having trouble figuring [...] read more

Bit twiddling for checking whether a number is in particular range

I found some interesting bit twiddling in "source\common\unicode\utf.h" file of ICU library (International Components for Unicode). The bit twiddling is intended for checking whether a number is in a particular range. // Is a code point in a range of U+d800..U+dbff? #define U_IS_LEAD(c) (((c)&0xfffffc00)==0xd800) I have figured out the magic [...] read more

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

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

Fastest timing resolution system

What is the fastest timing system a C/C++ programmer can use? For example: time() will give the seconds since Jan 01 1970 00:00. GetTickCount() on Windows will give the time, in milliseconds, since the system's start-up time, but is limited to 49.7 days (after that it simply wraps back to [...] read more

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

How, exactly, do bitwise operators work in Java?

I am currently trying to wrap my head around bitwise and bit shift operators in Java. Although they make sense to me in simplified toy examples (basically positive integers), my understanding falls apart as soon as negatives are involved, and in some other cases. I tried searching all over the [...] read more

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

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

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

mmap Mac: Segmentation fault

The following on my Mac succeeds: int main() { int* addr = (int*) mmap(0, 100, 1 | 2, 2 | 4096, -1, 0); *addr = 25; return 0; } However the below code is identical but fails when I try to write to *addr with segmentation fault: int main() { [...] read more

Error inflating class fragment: Duplicate id , tag null, or parent id with another fragment

I am trying to make an app in which when user clicks on item in ListView, the GoogleMaps is displayed. I have tried following code: ShowPlacesActivity.java public class ShowPlaceActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_show_place); if (savedInstanceState == null) { getFragmentManager().beginTransaction() .add(R.id.container_showplaces, new PlaceholderFragment()) .commit(); [...] read more

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

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

Once more: triangle strips vs triangle lists

I decided to build my engine on triangle lists after reading (a while ago) that indexed triangle lists perform better due to less draw calls needed. Today i stumbled on 0xffffffff, which in DX is considered a strip-cut index so you can draw multiple strips in one call. Does this [...] read more

Bug writing audio using custom video writer library

I'm trying to wrap a little handy piece of C++ code that is intended to generate video+audio on windows using VFW, the C++ library lives here and the descriptions says: > Uses Video for Windows (so it's not portable). Handy if you want to quickly record a video somewhere and [...] read more

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

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

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

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

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

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

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

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

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

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

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

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

My app works but log gives "No package ID ff found for ID 0xffffffff."

I have an app that works fine on my emulators and on my own device. However, when I navigate between views I get the message No package ID ff found for ID 0xffffffff. all the time. I do not know what it means or where it comes from. Searching through [...] read more

Flutter - Float Action Button - Hiding the visibility of items

I'm trying to control the visibility of the smaller items of the FAB, according to the gif below: enter image description here [https://i.stack.imgur.com/pWEqa.gif] However I am not able to insert the opacity in the items. Anywhere I put some kind of error occurs. I do not know if opacity is [...] read more

converting image to binary in swift

I want to convert an image to binary black and white, at the moment I am looping through pixels (stored in UnsafeMutableBufferPointer) using normal nested loops, comparing each RGB to average and setting it to black or white, however. This seems really slow and I am sure there is a [...] read more

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Marking packets with iptables with a NAT

I have to write bash scripts for a router to control bandwidth limitation for a given user on a given domain name. For this, I'm using iptables to mark the packets incoming from a restricted domain to a user ip address in the private network. With each couple user_ip/domain_ip I [...] read more

How to increase the image quality on using Pdfium

I have extracted the pdf page as an image by using the below code snippet,but on changing the size of the bitmap the text content in the image is not sharp, it is blurry Can you suggest a solution for improving the quality of the rendered image. var data = [...] read more

Swift randomFloat issue: '4294967295' is not exactly representable as 'Float'

When generating a random CGFloat, I use the following code. Some explanation here extension CGFloat{ static func randomFloat(from:CGFloat, to:CGFloat) -> CGFloat { let randomValue: CGFloat = CGFloat(Float(arc4random()) / 0xFFFFFFFF) return randomValue * (to - from ) + from } } It used to be OK. Works fine now. There is [...] read more

Bottom Sheet Fragment causes error when called the second time

I have a class BottomSheetFragment extends BottomSheetDialogFragment, which contains sub-fragments, and I call it from a fragment. The problem is that when I call it the second time, my app crashes with Binary XML file line #69: Duplicate id 0x7f090071, tag null, or parent id 0xffffffff with another fragment error. [...] read more

Need explanation about random function swift

Got a question about my random function: why is it giving this error? '4294967295' is not exactly representable as 'Float'; it becomes '4294967296' - my code is func random() ->CGFloat { return CGFloat(Float(arc4random()) / 0xFFFFFFFF) } func random(min: CGFloat, max: CGFloat) -> CGFloat { return random() * (max - min) [...] read more

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Exception thrown when I tried implementing a Login Screen

I'm developing a flutter app and I tried using a Login Screen from Flutter Screens and ran into a problem. When I run the app, it does not work and a list of errors is just shown to me. I'm wondering if I'm even using it correctly. This is my [...] read more

How can one make this dynamic bit range code GCC compliant for 64 bit compilers?

I am trying to update for linux, GCC, and 64 bit use and preserve in a github Ken Silverman's Paint N Draw 3D C software. I got his permission but he's too busy to help. I don't want to do a bad job and I am not a bit-twiddling expert [...] read more

Why am I not able to mask 32 bits on a long data type in Java

I cannot figure out why this works. I am attempting to mask the least significant 32 bits of java on a long but it does not properly AND the 33rd and 34th bit and further. Here is my example class Main { public static void main(String[] args) { long someVal [...] read more

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

Writing to page mapped dmas in kernel

I've been working on modifying the intel ixgbe kernel driver to function with my PCIe device (FPGA but that's not super important). The kernel and the PCIe device all negotiate quite well, configuration headers are passed along and communication seems to function. However attempting to write DMA_FROM_DEVICE I have a [...] read more

Bit Counting in C similar to bit twiddling hack

I need to make a routine that counts bits in a word that does not involve loops (only bit operations), and does not use large constants. int x = 0xFFFFFFFF; x += (~((x >> 1) & 0x55555555)+1); x = (((x >> 2) & 0x33333333) + (x & 0x33333333)); x = [...] read more

Divide a 48-bit number which is composed of a 16bit and a 32bit variable

I am developing a software for an embedded microcontroller (STN1110). It has no FPU or SFP emulation. There is an SDK method which returns the uptime of the controller in microseconds, split in two variables: uint16 (msw) and uint32 (lsw). I want to convert this "pair" into a single uint32 [...] read more

Places auto complete fragment-Binary XML file line #19: Error inflating class fragment

I have a layout having a recyclerview in which i inflate a cardview layout.when i add places auto complete fragment in the card,the app crushes. i want each card to a have the fragment the code for the cardview <?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginStart="8dp" android:layout_marginEnd="8dp" android:layout_marginTop="20dp" > [...] read more

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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

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

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 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

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

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

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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

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

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

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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

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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

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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

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

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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

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

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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

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

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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

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

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

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

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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

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

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

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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

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

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

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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

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

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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

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

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

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

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

"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

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

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

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

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

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

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

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

Apache22 on FreeBSD - Starts, does not respond to requests

I'm running Apache 2.2.17 with the peruser MPM on FreeBSD 8.2-RC1 on Amazon's EC2 (so it's XEN). It was installed from ports. My problem is that, although Apache is running, listening for, and accepting connections, it doesn't actually respond to any or show them in the log at all. If [...] read more

MDADM Array Being Limited to 2.0TB

I have an MDADM array with four 1TB disks in a RAID5 configuration. Here's the relevant part of mdadm --detail /dev/md1: Version : 00.90 Raid Level : raid5 Array Size : 2929537920 (2793.83 GiB 2999.85 GB) Used Dev Size : 976512640 (931.28 GiB 999.95 GB) Raid Devices : 4 Total [...] read more

Why is it necessary to set a netmask of 255.255.255.255 for “alias” addresses in FreeBSD?

From FreeBSD handbook on the topic of virtual hosts: > For a given interface, there must be one address which correctly represents the network's netmask. Any other addresses which fall within this network must have a netmask of all 1s (expressed as either 255.255.255.255 or 0xffffffff). Can anybody explain why [...] read more

NetLogon and RPC Errors

Situation: Co-located DCs connected by T1 to client working location. The T1 is averaging at about 2/3 usage. All 1 Active Directory. I am trying to deploy a start-up script to clients at the working location though GPO. It seems to work on some computers and not on others, but [...] read more

LVS Cluster Help

I'm trying to set up an LVS Cluster for a project and I don't have a lot of knowledge in these layers of networking. I've run into an issue where the real server rejects any packets from the director, but will allow packets to the same port from my client. [...] read more

Logging into local SQL Server instance with windows auth

I have a nodejs and express based project. I currently use sequelize to connect to a SQL Server instance. This works fine for external SQL Servers using SQL Server authentication. However, I am now trying to connect to a local SQL Server instance using Windows auth. This is what my [...] read more

recvfrom(2) receives UDP broadcast twice, but tcpdump(8) receives it only once

Summary: I want to receive packets from a single interface, but setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, iface, 1 + strlen(iface)) doesn't play well with recvfrom and shows all packets on all interfaces. tcpdump works well, however. I have a strong feeling that there's something wrong with the receiver program, but I haven't [...] read more

Generalize code to capture and crop a photo

This questions refers to Codename One only. Thanks to the commit 98dcbaa and re-working the test case ImageViewerSample2778, I created a full working example to capture a photo and to crop it. My initial result is satisfying, at least in the Simulator: enter image description here [https://i.stack.imgur.com/ISbvf.png] It seems ok, [...] read more

HardFault exception (configurable-priority exception to HardFault)

stack contents I have written a simple IO interrupt routine to test IO pin in ARM cortex m4 (cm408F). Code is below and very simple and populates vector table (also includes pragma weak and other stuff). I force the interrupt by setting the corresponding bits in NVIC_ISER0 and NVIC_ISPR0. The [...] read more

Connection between C++ Socket and Java Client

I'm creating a server app in C++ and client app in Java. I want to exchange 32 bit integer between them. And I've got a trouble, because when I'm trying send something from Java's client, I get a random answer in C++ server (e.g. I've send '0' and one time [...] read more

vmlaunch simple crash ubuntu 16.04

I am porting VMLaunch simple to ubuntu 16.04, the code is at https://github.com/vishmohan/vmlaunch. And modified the vmlaunch_simple.c to make it almost work in ubuntu 16.04. When I load the module (KVM and KVM_intel have been unloaded), the 'insmod vmlaunch_simple.ko' hang, where kexec/kdump chimed in and the host is rebooted. After [...] read more

Cannot set two textures to shader in dx11

I want to set two textures to shader, but when i sample second i get color of first one. Textures haves various size, so i cannot use array. What may be wrong? //-- fill and set interface dynamic texture D3D11_MAPPED_SUBRESOURCE msr; devcon->Map(Interface_DynamicTexture, 0, D3D11_MAP_WRITE_DISCARD, 0, &msr); memcpy(msr.pData, ibb, ibw*ibh*4); devcon->Unmap(Interface_DynamicTexture, [...] read more

Any way to stop duplication of code in this assembly code

I have only just started to learn the assembly language for the x86 architecture. I am doing some exercises based on conditional branching. At this point in time, I have been introduced to the JMP, JZ and JNZ instructions as far as branching of code is concerned. This is the [...] read more

Qt Creator fails to open a CMake project due to a wrong link.exe path

I upgraded Visual Studio 2017 recently and now cannot open a CMake project in Qt Creator 4.8.2. CMake succeeds to test the compiler when running from cmd.exe but fails in Qt Creator: Running "C:\Program Files\CMake\bin\cmake.exe -E server "--pipe=\\.\pipe\{b2399ce2-b8c1-4992-94b7-57b65efed70f}" --experimental" in D:\checkout\mateju\integrace\util\itex\build_Qt5-Release. Starting to parse CMake project. The C compiler identification [...] read more

White pixeldata is read after the canvas is cleared

I want to read out a Canvas's pixel data (using OpenJFX 12), and do some checks on it. int x = ...; int y = ...; Canvas canvas = ...; WritableImage snapshot = canvas.snapshot(null, null); PixelReader pixelReader = snapshot.getPixelReader(); Color color = pixelReader.getColor(x, y); This works except that if the [...] read more

Cant make value propagate through carry

Making a little C++ large precision class, and everything seems to work decent, but the add, if I add 0xffffffff and 0x04 together I get 0xffff0003 when I should get 0x0100000003. Here is the function with the issue: mpfl operator+(const mpfl &lhs, const mpfl &rhs) { unsigned long i; mpfl [...] read more

How to write rotate code in C to compile into the `ror` x86 instruction?

I have some code that rotates my data. I know GAS syntax has a single assembly instruction that can rotate an entire byte. However, when I try to follow any of the advice on Best practices for circular shift (rotate) operations in C++, my C code compiles into at least [...] read more

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

Traffic going to both eth0 and tun1

I'm working on Transmission over OpenVPN with split tunneling but I'm facing an issue with the firewall rules. So I decided to disable the firewall and check if it's working. It is but in a strange way. IPTables is set up to allow Transmission over tun1 only. The whole rules [...] read more

Kernel migration from 3.10 to 4.19 causes JFFS2/MTD/CFI mounting issues

I am trying to upgrade the kernel from 3.10 to 4.19 on an Atmel at91sam9260 system, everything otherwise unchanged. The system has 8 partitions on a NOR flash that work fine on 3.10. Booting into an initramfs on 4.19 followed by mounting the unchanged JFFS2 partitions reveals a lot of [...] read more

PCI Read Error on QNX for PowerPC

My team is developping on an MPC8313 PowerPC Dev Board and we're trying to write a network driver. The network card is a PCIe card connected to a PCIe-to-PCI bridge (PI7C9X111SL). The pci utility detects the card and can read and write the PCI config space. The problem is when [...] read more

Replacing an ssd on notebook (asus N501VW)

I'm finally running out of space on a 128GB ssd on a notebook (N501VW) and am thinking of replacing it with a larger, 500GB, drive. The setup: * 1 notebook (N501VW) running Win 10 (x64) * 3 drives (128GB ssd (M2) (C:), 1TB hdd (D:), 500GB ssd (M2)) 128GB: C:\WINDOWS\system32>fsutil [...] read more

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

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

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

Debugging MTP transmission/driver on windows

Basically I'm developing USB device, which will be using MTP for file transmission. It works fine with Konqueror, and Dolphin I can successfully copy files around, also mtp-getfile works (on Linux). On windows I can see my device and list files, but when I try to copy any of them, [...] read more

Wine x64 w/ 32-bit prefix "page fault on read access to 0xffffffff in 16-bit code"

I'm trying to setup an old education program my wife wants to try with our kids. Unfortunately, it was built in the Windows 3.1 / Windows 95 era. I'm running Fedora 29 x86_64 with Wine 4.0-0.3.rc2. I've setup a 32-bit prefix per https://wiki.winehq.org/FAQ#How_do_I_create_a_32_bit_wineprefix_on_a_64_bit_system.3F . When I run the setup.exe on [...] read more

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

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

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 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

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

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

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

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

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

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

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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

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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

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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

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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

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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

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I'd like to be able to access my DSL modem, which is acting as a bridge, from within my local network. I've got a setup like this: {Local network 192.168.1/24} | rl0:192.168.1.250 [OpenBSD Router] rl1:up tun0:pppoe | [Bridge DSL modem IP:192.168.1.254] | {Internet} I'd like to access the Bridge. To [...] read more

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We have a an error message that is occurring occassionally in our system. The images is available here The instruction at "0x7c82f583" referenced memory at "0xffffffff". The memory could not be read. Click on OK to terminate the program. Any idea what is causing it and how to fix this. [...] read more

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I need to add General to last. How do I do it? I added a new column to the database. The column name is sortOrder, every other value SortOrder is null without General. SortOrder value is 1 in only General. My API json like this, > {"deF_CAT_ID": 140, "description": "General", [...] read more

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I created an SKSpriteNode object, but multiple objects are created, appearing as strings of them. The sound coming from the SKAudioNode object is also duplicated many times to give a reverberating effect. Here is the code below. I noticed it doing this when I added the code to set the [...] read more

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I try to use my class Asteroid but I keep getting this error message. I tried everything but I cant seem to figure it out. There is just one asteroid that appears and then appears a thread on > AppDelegate : Thread 1: signal SIGABRT I am a beginner in [...] read more

Linux hangs at [random: nonblocking pool is initialized]

I'm learning to use pico-imx6 on baseboard pico-dwarf. I copy the image to the eMMC on pico-imx6 using: sudo dd if=pico-imx6_pico-dwarf_ubuntu-16.04_installer_hdmi_20160825.img of=/dev/sd<partition> bs=1M && sync The boot process is stuck. Here is the whole console message: U-Boot SPL 2015.04-00021-g9a899f8 (Jul 19 2016 - 14:07:40) Boot Device: MMC Boot Device: MMC [...] read more

How to fix SOCK_RAW not reading, writes fine, but will not read

Trying to make an ICMP request on windows 10 pro, SOCK_RAW will not read, but writes fine. How can I fix this so it reads and writes? Ran using admin privileges, and I've tried running without firewall on with no avail import os import sys import struct import time import [...] read more

imx6ul - how to select the right dts for sdcard image?

I'm building my first yocto release. All packages build well and I can build my dts. In fact I have a lot of dtb in my images folder. This is my build configuration. Build Configuration: BB_VERSION = "1.36.0" BUILD_SYS = "x86_64-linux" NATIVELSBSTRING = "ubuntu-18.04" TARGET_SYS = "arm-poky-linux-gnueabi" MACHINE = "pico-imx6ul-itl" [...] read more

QWT, how to Plot RGB values (show image in plot as rgb points)?

Using QWT, I want to plot an image. Each point of the image is set as argb value. For example: * first line, first pixel is red = 0xFFFF0000; * first line, second pixel is green = 0xFF00FF00; * second line, first pixel is blue = 0xFF0000FF; * x line, [...] read more

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

How to use motion layout with recyclerview

trying to use MotionLayout with RecyclerView, when scrolling up, app is crashing with error: > android.content.res.Resources$NotFoundException: Unable to find resource ID #0xffffffff fragment layout code is <android.support.constraint.motion.MotionLayout 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" app:layoutDescription="@xml/collapsing_config_order_details" android:layout_width="match_parent" android:layout_height="match_parent"> ... <android.support.v7.widget.CardView android:id="@+id/cardView" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_marginTop="8dp" app:layout_constraintEnd_toEndOf="@+id/tv_delivery_type" app:layout_constraintStart_toStartOf="@+id/imageView15" app:layout_constraintTop_toBottomOf="@+id/view4"> ... </android.support.v7.widget.CardView> <android.support.v7.widget.RecyclerView android:id="@+id/rv_list" android:layout_width="0dp" android:layout_height="0dp" android:layout_marginBottom="8dp" android:layout_marginTop="8dp" [...] read more

Unhandled exception in celery freezes workers

I am running celery in docker via a redis backend. I have * celery-beat container * celery-worker container * redis container The celery worker container spawns 6 worker processes. If a celery task encounters an exception, the workers (all of them) stop consuming jobs. I tried to debug the processes [...] read more

Interfacing lcd to imx6dl sabre sd

I'm trying to bring up the imxdl sabresd board using a prebuilt image but the lcd which is interfaced to the board doesn't display anything. How do I set-environment for this? I've followed the standard docs. which said: add video=mxcfb0:dev=ldb,bpp=32 to the kernel command line Hence I tried: editenv mmcargs [...] read more

Does this code that contains system("/bin/ls") seems unbreakable?

I'm doing some ctf-like homework. It's to make a privileged program run /bin/sh. There's no source code, only works on binary assembly. The program normally pass "/bin/ls %s" (stored at 0x804868f) to snprintf with argv[1]. So the output of snprintf (@main+222) would be sth like /bin/ls ~/. Then pass "/bin/ls [...] read more

pic32mz EF UART

Can anyone give me the configuration and code for sending a character in UART? I am using Pic32mz EF starter kit and MPLAB X-IDE v5.15. I tried a code but it is not giving out any UART in tera term or putty. // PIC32MZ2048EFM144 Configuration Bit Settings // 'C' source [...] read more

How can I have more than one navHostFragment in one activity?

I would like to have three navHostFragments in one activity, all taking the same space, but each hosting a different navigation graph. Then using a fragment manager and a bottom navigation bar I would like to show each when needed (and hide the others), and that way maintain the current [...] read more

Why do i have to have "vkClearValue" in my code to make it work correctly?

I have some base c++/vulkan code (windows 10, 64): #define LOG(x) std::cout << "CONSOLE_LOG: " << ##x << std::endl #include <iostream> #include <vector> #include "xgk-vulkan-wrappers.h" #define GLFW_EXPOSE_NATIVE_WIN32 #include "glfw3.h" #include <glfw3native.h> #define WIDTH 800 #define HEIGHT 800 const char* instance_layers[1] = { "VK_LAYER_LUNARG_standard_validation" }; const char* instance_exts[3] = { "VK_KHR_surface", [...] read more

could not load inserted library: /usr/lib/libgenkit.dylib

I'm trying to run my universal app into device(iPad) but am getting this linker error sharedlibrary apply-load-rules all warning: Couldn't get real path for inserted library /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/usr/lib/libgenkit.dylib warning: Couldn't get real path for inserted library /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.3 (8J2)/Symbols/usr/lib/libgenkit.dylib target remote-mobile /tmp/.XcodeGDBRemote-26364-38 Switching to remote-macosx protocol mem 0x1000 0x3fffffff cache mem [...] read more

InitializeCriticalSection fails in NASM

UPDATE: based on comments below, I revised the code below to add a struc and a pointer (new or revised code has "THIS IS NEW" or "THIS IS UPDATED" beside the code). Now the program does not crash, so the pointer is initialized, but the programs hangs at EnterCriticalSection. I [...] read more

Duplicate id 0x7f0a00b4, tag null, or parent id 0xffffffff with another fragment for com.google.android.gms.maps.MapFragment

* i have Navigation Activity that holds different fragments when i start home fragment which contains two(passenger and Driver) more fragments inside it they are working perfectly..while running passenger fragment i start an activity from this fragment in which i perform some background task if it execute successfully then fragment [...] read more