Xorg is a full featured X server that was originally designed for UNIX and UNIX-like operating systems running on Intel x86 hardware. It now runs on a wider range of hardware and OS platforms.

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28
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4answers
56k views

Open a window on a remote X display (why “Cannot open display”)?

Once upon a time, DISPLAY=:0.0 totem /path/to/movie.avi after ssh 'ing into my desktop from my laptop would cause totem to play movie.avi on my desktop. Now it gives the error: No protocol ...
22
votes
4answers
7k views

Can I launch a graphical program on another user's desktop as root?

Following are other questions which I think I need to know: From a non X Session? (meaning root isn't logged into X) If multiple people were logged in on X, could I auto-detect who was on which ...
94
votes
6answers
209k views

How to forward X over SSH from Ubuntu machine?

I have a machine running Ubuntu which I SSH to from my Fedora 14 machine. I want to forward X from the Ubuntu machine back to Fedora so I can run graphical programs remotely. Both machines are on a ...
32
votes
11answers
12k views

A tool for automatically applying RandR configuration when external display is plugged in

is there a tool which enables one to: remember current RandR configuration (position, orientation, resolution etc) on per-monitor basis, automatically apply last known good configuration as soon as ...
26
votes
4answers
7k views

Is there a way to communicate with someone at their desktop?

My wife is sitting at her home desktop, alpha, which is running a recent version of Ubuntu. I am on a bus, using ConnectBot on my G1 phone, and can SSH into alpha from wherever I am. For complicated ...
43
votes
4answers
10k views

Pasting X selection (not clipboard contents) with keyboard

I'd like to be able to paste the X selection using the keyboard. Currently I have to use the middle mouse button to do this. I gather that faking a middle mouse button press is fairly easy to do, ...
25
votes
4answers
23k views

What is “.xsession” for?

What is the purpose of the .xsession file in the home folder? What should be put in there? The desktop environments don't use that file and for the X startup from the tty there is .xinitrc.
30
votes
7answers
16k views

How do I get current keyboard layout?

I'm wondering is there any command line tool, that returns current keyboard layout. I have XkbLayout set to us, ru. Update: setxkbmap returns layout settings, not selected layout. E.g.: $ setxkbmap ...
22
votes
5answers
8k views

How to enable killing Xorg with Ctrl+Alt+Backspace

I don't remember why they did this, but at one point X.org decided that disabling CtrlAltBackspace to kill it was a good idea. I know there's a way to re-enable it but I don't remember how. Can ...
13
votes
2answers
3k views

Disable mouse (not touchpad!) in Xorg while idle

I am an avid keyboard user, but I still need the mouse every now and then. To minimize the hand travel, I have the mouse located below my keyboard. (On a side note, using the mouse this way feels ...
4
votes
2answers
4k views

Howto find my xorg.conf. Where is it?

I can't find my xorg.conf. There is no xorg.conf file by default in Ubuntu 11.04. If I run: "whereis xorg.conf" I am seeing: xorg: /usr/lib/xorg /usr/lib64/xorg /usr/include/xorg may be I just can ...
21
votes
1answer
11k views

What does DISPLAY=:0.0 actually mean?

What does the :0.0 actually mean? I know that :0 is the first X server that is started on a local machine, :1 the second, etc. But what is that .0 part after :0? Do other combinations exist? (e.g. ...
10
votes
2answers
765 views

Set Xorg to use only part of the screen

My screen has 1280 x 1024 resolution. But unfortunately, rightmost belt of 200 pixels is damaged and unable do display any image. How can I set that the Xorg will treat my screen as 1080 x 1024 ...
6
votes
1answer
4k views

Show a notification across all running X displays

Using the command line, I'd like show a notification on every running X display. ( and running console ) Something like: notify-send-all 'Warning' 'Nuclear launch in 5 minutes, please evacuate' Is ...
5
votes
2answers
8k views

How to start a second X session?

I tried to do it with the command startx 1. It seemed to flicker to a different screen momentarily, but then exited. Got the following error: /usr/bin/xterm: No absolute path found for shell: :1 ...
6
votes
2answers
3k views

Edid information

I want to gather the Edid information of the monitor. I can get it from the xorg.0.log file when I run X with the -logverbose option. But the problem is that If I switch the monitor (unplug the ...
19
votes
8answers
7k views

Disable Keyboard & Mouse input on unix (under X)

How can one programmatically "freeze" the Keyboard & Mouse temporarily, so that no one could mess with the system? There are several possibilities where this is useful. For instance, I have a ...
19
votes
3answers
5k views

Command for forcing a pointer ungrab (captured mouse release)

Sometimes Firefox doesn't release the mouse after dragging, so I need to kill the application to force it to release its pointer grab. Is there any command to force an application to ungrab the ...
11
votes
3answers
706 views

Emulate horizontal scrolling with Shift key

I want to emulate horizontal scrolling when I use my (vertical) scroll wheel and pressing Shift. In some applications (Chrom{e,ium}) this already works, but I'm looking for a generic solution for X ...
7
votes
1answer
18k views

How to install Nvidia drivers on Debian Jessie

I have installed the Nvidia drivers according to the wiki but with no success. The system hanged during boot. So, how can I install the drivers successfully on Debian Jessie? My PC's specs: GPU: ...
7
votes
1answer
2k views

Where is Xkb getting its configuration?

Is there a way to query where xkb is getting its configuration from? Under ArchLinux I have /etc/X11/xorg.conf.d/00-keyboard.conf with Section "InputClass" Identifier "system-keyboard" ...
14
votes
1answer
1k views

Invert colors of the active window

Sometimes I work in low light and I need to invert the color of specific windows to reduce my eye strain. This could be my pdf viewer to web pages for reference work. I know how to invert the entire ...
10
votes
2answers
3k views

Map “windows” key on keyboard to “ctrl”

I am on Ubuntu and using a Microsoft keyboard. I want to map my Win key to a Ctrl key. How can I do that?
10
votes
4answers
4k views

Reassign Ctl and Alt keys - xmodmap error

I am attempting to remap my keyboard in order to make emacs usable. My ergonomic keyboard puts its single Control key in an isolated 4-key island way off to the left. The OS is Debian squeeze. Here ...
8
votes
2answers
801 views

Custom xkb layout in which one key creates two unicode code points

I am writing a new custom keyboard layout for Xorg, but there is one particular glyph which does not exist in Unicode. It is, however, easy to create it by using a standard letter plus a combining ...
5
votes
2answers
1k views

Preventing access to TTY when X is killed

Assume I start an X server manually from a virtual console /dev/tty1 with xinit or startx, with the line id:3:initdefault: set in /etc/inittab. The X server gets run and put on another virtual ...
4
votes
3answers
1k views

How to make Compose work in GTK and Qt apps?

I used Gnome for a long time, but preferred vanilla X input method (xim) over the default GTK behaviour. I just set GTK_IM_MODULE and QT_IM_MODULE enviroment variables to xim, and didn't have any ...
9
votes
2answers
395 views

Screen doesn't always shut off on its own

It seems like when I have certain web pages focused, my screensaver will kick in, but the screen won't turn itself off. Does anyone have any ideas why this might be? Is there a way to disable whatever ...
5
votes
2answers
936 views

Taking a screenshot (within X)

How can I take a screenshot in X.org? I am unsure if the Print Screen button will "just work" and I don't know how I would go about testing it.
4
votes
1answer
512 views

Multiseat X setup with a single dual head graphics card

I am considering trying to setup a multiseat system. It seems like this would be pretty straight forward if I had two graphics cards or if I didn't need hardware based OpenGL acceleration. Is it ...
1
vote
3answers
4k views

How can I set the keyboard right on X?

Note: forked of this per recommendation here. I made a foolish typo for UTF-8, and expected that when I fixed it, the keyboard on X would work right. Since making this errant change, I was no ...
8
votes
3answers
3k views

xorg memory leaks

On my desktop Xorg leaks a lot of memory. I use to let this machine on for days (weeks, months ...), but about once a week I'm forced to restart xorg, because it is taking too much memory. Am I the ...
5
votes
2answers
6k views

How to configure xorg.conf for widescreen VNC on headless Linux/Ubuntu?

I have a Ubuntu 12.10 Box configured to run headless. I've managed to boot X headless by a lot of trial and error but I still have a glitch: When booting using the monitor, it all works ok, widescreen ...
4
votes
2answers
867 views

How to troubleshoot the old X applications working incorrectly on modern X servers?

I have an old X application provided as a part of a complicated signal processing package. The application resides on the display-less server, and clients having different X-servers connect to it. On ...
4
votes
2answers
1k views

Installed Fedora in dual boot Windows desktop. Now I can't get full monitor resolution with my AMD Radeon HD 6450

I have a 1900x1080 resolution monitor, and after installing Fedora to create a dual boot machine, the maximum resolution Fedora 14 (previously only Windows 7 was installed) can achieve is 1280x1024. ...
3
votes
1answer
2k views

change colour depth

How do I change the colour depth? It says online to edit the xorg.conf file, but I don't have that. I am running Debian XFCE on a Powerbook G4
2
votes
3answers
113 views

Weird behavior after upgrade

I upgraded my old computer and weird things have started happening. I successfully installed Debian and everything seemed to be fine but in a few days I noticed that after ~10 hours of work the ...
2
votes
2answers
6k views

not able to create xorg.conf file

I want to change my colour depth. I posted this, and got the following answer: Create an xorg.conf file by running Xorg -configure. Then edit the Depth entry in the Display subsection of the ...
2
votes
2answers
882 views

Why won't my X Server won't start as a regular user?

X won't start on my main machine. I can start it as root, but then it only logs me in as root -- I can't use my regular user account. When I start up, it flashes a black screen, then hangs at ...
1
vote
1answer
650 views

unlisted screen resolution

on my new computer I have 2 screens connected on the igpu of a i7 processor, 1 using hdmi. the other using dvi. Both screens are the same but 1 has a wrong resolution inside X, and it can't be ...
1
vote
1answer
572 views

Determining keycode assignments for X.org on a PC

At some point around late 2008 to early 2009, some keycode values (apparently, for the keys that weren't on an XT keyboard) on a standard PC keyboard when running X.org under Linux changed. I don't ...
0
votes
1answer
101 views

Alternative to ffplay for Raw Video Playback without X Windows

I am successfully capturing frames from a small USB IR camera on the small Raspberry Pi Linux board. I am using the 'libseek' code to do this: https://github.com/zougloub/libseek I can see alot of ...
57
votes
10answers
40k views

How do I choose a graphics card for Linux?

I'm building or buying a new Linux system, and I'm trying to select the best graphics card for my needs. How do I go about making this decision? There's dozens of computer-gear review sites which ...
19
votes
2answers
3k views

Getting a window's PID by clicking on it

Is there any package which shows PID of a window by clicking on it?
16
votes
5answers
2k views

How is the linux graphics stack organised?

Can anybody explain(hopefully with a picture), how is the linux graphics stack organised? I hear all the time about X/GTK/GNOME/KDE etc., but I really don't have any idea what they actually do and how ...
15
votes
6answers
9k views

Correlating /var/log/* timestamps

/var/log/messages, /var/log/syslog, and some other log files use a timestamp which contains an absolute time, like Jan 13 14:13:10. /var/log/Xorg.0.log and /var/log/dmesg, as well as the output of $ ...
13
votes
3answers
4k views

Sharing an X server (session) across computers

I have 2 computers (both running linux) and I'm currently using synergy to use them. This is great, but now I'm wondering, is there any way (is it possible? being worked on? tried and failed? ...
7
votes
1answer
4k views

Linux - LXC; deploying images with tiniest possible X11

is it currently possible to setup LXC containers with X11 capabilities? I'm looking forward for the lightest available X11 container (memory-wise), hardware acceleration a plus but not essential. If ...
18
votes
2answers
4k views

How to disable the Forward/Back buttons on my mouse

My mouse has an unfortunate feature. On the left side, right where my thumb sits ever so gently when I'm using it, there are two buttons that are so sensitive a mere brush will make them click. I'm ...
14
votes
11answers
5k views

Screen corruption after hibernate — Is there another way to refresh the X11 display?

When I restore from hibernate the screen is often corrupted. I suspect the graphics memory is not being saved. Suspend-to-ram works fine otherwise. It also looks like the font-cache is corrupted, as ...