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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8
votes
0answers
8k 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 ...
7
votes
0answers
3k views

Upload only modified files to FTP server

I want to upload files from my computer to an FTP site and I don't want to upload files that are already on the server. So I need a tool that finds out which local files that are different from the ...
6
votes
0answers
383 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
144 views

Tar encounters “Cannot open: Not a directory” while compressing

I am using fakeroot v1.12.4 for packaging and extraction on RHEL-6.4. I have two different servers where I am compressing files using tar v1.23. Compression is failing on one server with this error: ...
5
votes
0answers
386 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 ...
5
votes
0answers
222 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
812 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 ...
5
votes
0answers
219 views

Migrate LVM to ZFS

I am currently thinking about moving away from my LVM setup to a ZFS setup with RAIDZ. My current setup consists of 5 x 4TB disks in a LVM and a 60GB SSD for the system. At the moment there is about ...
4
votes
0answers
5k views

Reset android studio appearance settings to default

Suddenly the UI texts of Android studio became bold (maybe after an inappropriate shutdown). I didn't change font settings for android studio appearance myself. This is how it looks like: Before: ...
4
votes
0answers
165 views

Nginx + openvpn (proxy) and access.log

I currently have a nginx server running on 444 and an openvpn on 443 with the port-sharing feature. The both applications run well but the IP written in /var/log/nginx/access.log is, thereby, 127.0.0....
4
votes
0answers
132 views

Why do different users get different IP via the same interface

On the same server, on root, I am getting the correct internet ip of the interface root@server:~# curl -s --interface ppp0 ipcheck.com 111.111.111.111root@server:~# However... If it's not super ...
4
votes
0answers
216 views

Ubuntu Trickle Will Not Open Chrome

I'm trying to open Chrome with trickle to throttle the upload speed so I can test a sites image uploading progress display, but the build in dev tools for chrome only allow throttling for downloads. ...
4
votes
0answers
544 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
792 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
267 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
1k views

gvfsd-trash's way of clearing the trash

One of the way that make the laptop reach for its limits is when its clearing up the trash in a gnome based DE with nautilus based FM. With the trash has about a plethora of files (for example, a copy ...
4
votes
0answers
531 views

Using directory as initrd in QEMU

Is there a way to use a directory as initrd when booting QEMU? I know how to use the -kernel and -initrd flags for QEMU to boot a kernel and initrd without needing to first create a bootable device ...
4
votes
0answers
63 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? EDIT:...
4
votes
0answers
408 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
581 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
2k 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
297 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
241 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
130 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
382 views

Debian 7 kernel 3.13.6 - kworker freezes for no reason and takes several processes with it

I have been wracking my brain trying to figure this out. My Linux server will, at random, decide to just hang everything and it is only ONE kworker thread that does it. First the kworker thread ...
4
votes
0answers
2k 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
132 views

How to prevent Alt+Shift from switching keyboard layout before keyup?

Motivation: In an appplication I'm using, Alt+Shift+R is taken up by -- well, never mind what, something app-specific. However, on my Linux system (Kubuntu 12.04 specifically), when I press Alt+Shift ...
4
votes
0answers
978 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
231 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
890 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
911 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
717 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
205 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
631 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 lowerdir=/home/student,upperdir=/home/....
4
votes
0answers
3k 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 gnome-...
4
votes
0answers
501 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
806 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
601 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
3k views

What is acpitz-virtual?

lm-sensors gives the following output for this machine: acpitz-virtual-0 Adapter: Virtual device temp1: +60.0°C (crit = +105.0°C) temp2: +56.0°C (crit = +105.0°C) ...
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
15 views

Why os Fedora is calling containers on startup?

My fedora distro is messed up with docker containers... Everytime I restart this I need to call "docker ps" and then call "docker kill" for each container that is running... How can I discover who ...
3
votes
0answers
48 views

How to set default grub configuration file

I am booting four operating systems: Windows 7, Ubuntu, Kali Linux, and Linux Mint. They were installed in that order, with Linux Mint most recently and Windows 7 first. I am able to edit the /etc/...
3
votes
0answers
36 views

Formatting a 3TB hard drive for media

I recently bought a 3TB internal SATA hard drive. This drive is strictly for my Anime collection. I want to use it to store my huge media (Video|Audio) collection. I don't have executables. I don't ...
3
votes
0answers
65 views

Booting from external linux drive destroyed internal windows installation?

I have installed Arch Linux on an external SSD. I have already used it for some time without errors to use my own arch Linux installation on other machines. Now I started using two different ...
3
votes
0answers
27 views

Unexpected reboots of a Ubuntu Linux

I have a Ubuntu Linux machine acting as a bridge/firewall between the Internet and my home network. This host works 24x7 unattended. It just sends me a report every day. I've paid attention that in ...
3
votes
0answers
27 views

simple setup for a local area with 4 vlans

I need to set up 2 lan ports on my pfsense to each be a member of 4 vlans (10,20,30,40) with each vlan having a separate gateway ( 10.10.1.1, 10.20.1.1, 10.30.1.1 and 10.40.1.1). I would like hosts ...
3
votes
0answers
27 views

AltGr key generate spurious Control_L keyPress events

I am using NX Client for Windows V 3.5.0-9 to login remotely to a Redhat system. When I press AltGr there is sometimes spurious KeyPressed events for Control_L keyPressed generated. I don not know ...