A family of Unix-like operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.

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6
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769 views

How do I make my Lenovo Y50's subwoofer work on linux?

I have a Lenovo Y50 laptop which has a subwoofer integrated that works only on Linux Mint 17.2, if I download HDA Analyzer and change with it: PIN 0x17 -> Widget Control -> Check OUT PIN 0x17 -> ...
6
votes
0answers
6k views

Perf samples too long, lowering kernel.perf_event_max_sample rate to

My machine freezes from time to time and I can get it working back by pressing the space key. I have this problem since two weeks now, but it was just once per day max. Now it's starting to be many ...
5
votes
0answers
153 views

What Exactly am I Seeing Here?

I have a Dell D620 that has its screen ripped out ( was damaged a while ago ) and so to see any console output, I have a VGA-Compatible TV hooked up to it. Sometimes when I haven't typed anything for ...
5
votes
0answers
297 views

xkb set keyboard level 3 chooser to ctrl+alt

The title says it all: I'm interested to mimic the Windows behavior, where Left Ctrl + Left Alt acts as a 3rd level chooser. This is relatively important to me, because, as a programmer, on my ...
5
votes
0answers
1k views

QEMU within VirtualBox and bridged connections all the way down

I'm trying to get an ARM QEMU system out on my LAN. I tried running QEMU directly from Windows (Windows 7 x64), with success except I could not get a TAP adapter to bridge to my wireless connection. ...
4
votes
0answers
39 views

Show password characters when logging in to Linux

I am setting up a long-range wireless serial terminal (with a pair of XBees, if anyone is wondering) connected to my Linux box. It's going great, but sometimes a keystroke doesn't go through. This ...
4
votes
0answers
6k views

Can't connect to SFTP: Received unexpected end-of-file from SFTP server

When i try to use SFTP via filezilla to connect to my CentOS 6.6 server i get the following error: Status: Connected to (redacted) Error: Received unexpected end-of-file from SFTP server Error: ...
4
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0answers
171 views

Password-protected PDF not opening on Linux

I have a PDF document (from the British Library via interlibrary loan) which is password protected via some sort of remote validation of the password. I tried to open it on Ubuntu 14.04, which ...
4
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0answers
427 views

Kali Linux's NVIDIA driver install guide does not work

I'm trying to get my natively installed Kali Linux distro to detect my second monitor. I have two Samsung S20B300 monitors but its only picking up one of them. The one it is picking up is plugged in ...
4
votes
0answers
539 views

Upgrading glibc in centos 6.6

My server is using glibc-2.12.x. when I install certain packages it gives an error.Dependency not found glibc-2.14 or above is required.When I try using yum install glibc* it says server is already ...
4
votes
0answers
706 views

switch off anti aliasing in fedora 22

I updated to fedora 22 last days and under most desktops ( kde/gnome/gnome3 ) all terminals have a very very ugly font setting. It is nearly impossible to use some text base editors in this terminals ...
4
votes
0answers
198 views

why am I not seeing traffic using TCPDUMP while sniffing on wireless interface with the station in WDS mode

I've 2 wireless interfaces one has the type of AP and the other has the type monitor. the AP is attached to a bridge br-lan. When I run for example: tcpdump port 5201 -s 0 -ni wlan0 TCPdump is ...
4
votes
0answers
261 views

How can I stop my laptop waking from suspend as the lid is closed?

I have an Alienware M17x with Kubuntu 14.10. When I suspend to RAM and close the lid, very often it will wake up after a few seconds of sleep. Sometimes not. I get the feeling it's related to how ...
4
votes
0answers
53 views

Swap alt and ctrl in certain programs on Linux

I would like to swap alt and ctrl key when launching certain programs on Linux, such as zsh and emacs, while keep the original keyboard layout when using other programs. Is it possible to do so? ...
4
votes
0answers
353 views

Webcam is only recognized by some software

I have a webcam that works fine in software such as camorama and cheese. However, I cannot use it in websites that allow you to use a webcam (it's not recognized). I tested it with: Chromium 34.0 ...
4
votes
0answers
482 views

Block all outgoing traffic for a User running Wine apps

Good day, I'm using a lot of WINE apps under Linux which work just fine, but one thing I am specifically looking for right now is to block their access to the internet (outgoing), with exception of ...
4
votes
0answers
523 views

VirtualBox Port Forward not working when Guest IP *IS* specified (while doc says opposite)

Trying to port forward from host (Mac OS X) 127.0.0.1:8282 -> guest (CentOS)'s 10.10.10.10:8080. Existing port forwards include 127.0.0.1:8181 and 9191 to guest without any IP specified (so whatever ...
4
votes
0answers
1k views

Apache2 + Php + Pthreads HowTos

I'm running Ubuntu 14.04 LTS 64 bit. What I would really love to do is sudo apt-get install libapache2-mod-php5 but compile PHP with --enable-maintainer-zts so I could later install pthreads with pecl ...
4
votes
0answers
264 views

mdadm: Win7-install created a boot partition on one of my RAID6 drives. How to rebuild?

My problem happened when I attempted to install Windows 7 on it's own SSD. The Linux OS I used which has knowledge of the software RAID system is on a SSD that I disconnected prior to the install. ...
4
votes
0answers
193 views

Iptables error :libipt_cgroup.so doesn't exist while using net_cls.classid in net_cls cgroup subsystem

In kernel document doc/cgroup/net_cls.txt, it introduces the function of net_cls.classid, and show an example of netfilter (iptables) using this tag to perform actions. the command of iptables is: ...
4
votes
0answers
602 views

I can't get XFCE terminal to display VIM's colorschemes

That's what I have in my .bashrc if [ -n "$DISPLAY" -a "$TERM" == "xterm" ]; then export TERM=xterm-256color fi In my .vimrc I have: set t_Co=256 echo $TERM prints xterm-256color tput ...
4
votes
0answers
116 views

DNS tunneling through an SSH connection looses connectivity

In the article 'UDP traffic through SSH tunnel', it is described how to tunnel DNS trough a SSH tunnel: client# ssh -N -L 6667:localhost:6667 user@server server# mkfifo /tmp/fifo server# nc -k -l ...
4
votes
0answers
154 views

Short hang on each new window and each closed window in Linux / Gnome Shell

Every time I open a new window on screen, the entire display freezes for 3 seconds. Every time a window is closed, the entire display freezes for 3 seconds. The first few windows after reboot are ...
4
votes
0answers
1k views

Is it possible to run Corona SDK on ReactOS or Wine?

I dumped Windows, I'm now using Xubuntu. Is it possible to run Corona SDK on Wine? On Corona forums, they say no, but I wounder how this guy did it? Is ZeroBrane a solution? What about ReactOS (or ...
4
votes
0answers
432 views

Poor write performance on ecryptfs

I did a bit of benchmarking with ecryptfs and dm-crypt, and got some interesting results. All the following were done with a Btrfs filesystem, using dd to copy a ~700MB file to/from a ramdisk with the ...
4
votes
0answers
808 views

Error mounting external hard drive

When I tried mounting an external hard drive connected via usb I got the error quoted below. So far I've tried using ntfsfix and chkdsk. My operating system is Arch Linux and the drive is NTFS ...
4
votes
0answers
3k views

cpu load measure with hyperthreading on linux

How can I get the true usage of a multicore hyperthreading enabled cpu? For example lets consider a 2 core CPU, expressing 4 virtual cores. A single threaded workload would now show up as 100% in ...
4
votes
0answers
226 views

Need noacpi in CentOS 6.4, not in RHEL 6.4

I've been trying to fix a rather odd problem that I've seen on our new Dell R5500 (Xeon based workstations). We want to run CentOS 6.4 64 bit on them. We did a base install which worked fine, however ...
4
votes
0answers
783 views

What is causing this post-commit error “database is locked” when I perform SVN commits?

I have a Ubuntu machine acting as a subversion server via an svnserve daemon (as root) in my private network. The svnserve daemon reads from a mounted SMB share that is on our raid setup. I can ...
4
votes
0answers
837 views

mdadm RAID monitoring no DegradedArray email

So, I have a couple of MDADM RAID arrays and I want to set up monitoring with email notifications for drive failures through sSMTP but I can't seem to get it working. The system in question is a ...
4
votes
0answers
1k views

redshift color adjustment with hardware/software cursor

I'm running Arch Linux (with Con Kolivas' ck1 patchset, although that shouldn't affect this issue) and using the proprietary Nvidia graphics driver, currently at version 313.26 (my card is a GeForce ...
4
votes
0answers
675 views

Dropbox causes xorg to use 100% CPU

For some time, I noticed that my xorg process uses up between 60 and 100% of the CPU (according to top). I also noticed that interactive work becomes sluggish, even on my multi-core i7 processor. ...
4
votes
0answers
188 views

Read and parse perf.data

I am recording a performance counters frm linux using the command perf record. I want to use the result perf.data as an input to other programming apps. Do you know how shall I read and parse the ...
4
votes
0answers
571 views

force upperdir overlayfs to re reread/reload lowerdir

am having the following problem with an overlayfs: I can mount an overlayfs fine using the following line in my etc/fstab none /home/student overlayfs ...
4
votes
0answers
2k views

No DisplayPort output via DisplayPort→HDMI adapter from Nvidia card using Linux on Thinkpad W520

I have a Thinkpad W520 laptop with Nvidia Quadro 1000M graphics running Debian testing (“wheezy”) and Nvidia driver version 295.40-1. The graphics mode is set to discrete in the BIOS. I would like to ...
4
votes
0answers
4k views

XRDP: window manager not starting

I have setup my Ubuntu server so that I can connect and login to XRDP from Windows remote desktop. My problem is that after logging in, no window-manager is started. It only displays a single ...
4
votes
0answers
482 views

Ubuntu linux - new “MIDI” device diagnostic software?

I'm looking for software that will tell me if a particular USB device meets the MIDI standard. I have a new Madcatz wireless USB controller, that I suspect will need a special driver before it's ...
4
votes
0answers
743 views

Case-sensitive error in compiler's building using crosstool-ng under Cygwin

When I try to build gcc cross-compiler using crosstool-ng under Cygwin (running in Windows 7) I have the following message: $ /opt/ng-crosstool/bin/ct-ng build [INFO ] Performing some trivial sanity ...
4
votes
0answers
2k views

How to use an old Kingston DataTraveler Vault Privacy USB flash drive on Linux?

My company provides me a DTVP with hardware AES encryption two years ago and the CDrom image does only contain tools for Windows and MacOS X. Kingston products now have support for Linux. Current ...
4
votes
0answers
580 views

Gnome 3 move window to 2nd monitor?

I am running Mint Linux 12 with Gnome 3. My setup has 2 screen. I am wondering if there is a program to move the windows to a 2nd monitor? Something like display fusion for Linux that makes a button ...
4
votes
0answers
2k views

why can't I create directories in virtual box shared folder? Windows 7 host, arch linux guest

I'm mounting a shared folder in an arch linux guest on a windows 7 host in Virtual Box. The shared folder's filesystem is ext3 and is mounted in windows 7 with Ext2Fsd. I mount the shared folder at ...
3
votes
0answers
47 views

How to load entire process memory from swap quickly (linux)?

I run a bunch of CPU-hungry processes in parallel, they normally use a few GB of memory each. From time to time they allocate large amount of memory too (say 150-250GB). Usually at most one of the ...
3
votes
0answers
13 views

Linux : Focus on terminal window is lost when calling feh image viewer

Once my desktop (Raspbian) is loaded, I have a script launched in a terminal window that loads a fullscreen image in feh image viewer. Then, my script waits for user entry through keyboard (barcode ...
3
votes
0answers
49 views

kde is not loaded after install debian kde CD (.iso file)

I downloaded this .iso file: debian-8.2.0-i386-kde-CD-1.iso and expected to have KDE desktop but CLI is loaded after installation. I also tried startx but just redirect to another command line. ...
3
votes
0answers
28 views

Which X Window system is installed on my server that would work with Xming

I would like to use Xming to connect a server and managed to get it to work. I am now trying to get it to connect to a different server but i am not sure which X Window system is installed. I tried it ...
3
votes
0answers
39 views

Why would it be faster to hop SSH with pseudo-tty versus forwarding?

I have noticed that on my office's network, multi-hop SSH connections using the "pseudo-tty" method perform better (see last note) than using the "forwarding" method. Why would this be the case? In ...
3
votes
0answers
16 views

How can I pass content of Chrome internal page to a shell script?

I would like to be able to pass the content of this internal chrome page to a file "about:gpu" but I don't know how. All this with bash commands. I would appreciate your help
3
votes
0answers
57 views

Why does wine need a kernel 3G/1G memory split to function?

When trying to run wine on stock Raspbian, you get a message like this: Warning: Memory above 0x80000000 doesn't seem to be accessible. Wine requires a 3G/1G user/kernel memory split to work ...
3
votes
0answers
31 views

MongoDB ServerSelectionTimeoutError: No servers found yet

I've got a mongodb instance running on a standard AWS Ubuntu 14.04 server. After some trouble (upgrading the server using sudo mongod --upgrade --dbpath /var/lib/mongodb/) I now have the server ...
3
votes
0answers
61 views

Can't install python requests library on Centos 5.11

I'm running Centos 5.11. I'm trying to install the python requests package. But pip keeps giving me syntax errors. pip help returns [root@32437-201824 bin]# pip help Traceback (most recent call ...