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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43
votes
4answers
79k 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 ...
25
votes
4answers
9k 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 ...
147
votes
6answers
308k 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 ...
36
votes
11answers
16k 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 ...
56
votes
4answers
15k 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, ...
32
votes
4answers
35k 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.
27
votes
6answers
12k 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 ...
25
votes
1answer
14k 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. ...
27
votes
4answers
10k 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 ...
19
votes
8answers
10k 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 ...
33
votes
7answers
23k 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 ...
8
votes
2answers
5k 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 ...
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 ...
8
votes
1answer
4k 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" ...
4
votes
2answers
5k 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 ...
12
votes
2answers
16k 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 ...
10
votes
2answers
1k 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 ...
20
votes
3answers
6k 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 ...
5
votes
3answers
2k 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 ...
2
votes
1answer
1k 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 the one connected using hdmi has a wrong resolution inside ...
10
votes
4answers
5k 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 ...
7
votes
1answer
24k 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: ...
6
votes
2answers
4k 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 ...
3
votes
1answer
3k 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
17
votes
4answers
67k views

Command line to return to the GUI after Ctrl-Alt-F1?

I'm unable to return to the GUI with Ctrl-Alt-F7 (or any of the 12 function keys). I have some unsaved work and I don't want to lose them. Are there any other key combinations that will allow me to ...
11
votes
3answers
1k 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 ...
10
votes
1answer
2k views

Can I move a running application to a different X server?

Is there any way to open a graphical program (for instance, gedit) while using X11 forwarding over SSH and transfer the X server connection back to the X server on the SSH host?
10
votes
5answers
7k views

How can I turn off “middle mouse button paste” functionality in all programs?

I don't like having the middle mouse button paste, because I often end up with uncompilable code in Eclipse. How can I turn this off (in all programs)? I'm running Fedora.
8
votes
2answers
2k views

UTF8 math symbols & keyboard layout / input

I'd like to use UTF8 math symbols, when typing one list, another list. I've found sth called ComposeKey. Unfortunately it's not covering omega, theta, rightarrow etc. I am using KDE, I've tried ...
17
votes
1answer
2k 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 ...
11
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?
8
votes
2answers
1k 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
2k 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 ...
1
vote
3answers
8k 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 ...
9
votes
1answer
399 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 ...
7
votes
1answer
319 views

Possible to move a window from one X screen to another on same host?

I'm running XFCE 4.12 with 3 monitors setup into two X screens and two video cards on the same computer. Two of the monitors form a single X screen using nvidia twinview functionality, which is ...
6
votes
1answer
880 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 ...
5
votes
2answers
940 views

Viewing a part of the screen in a window on Linux

I plan to make a presentation with a live demo using my wide screen Ubuntu 12.10 Laptop and a projector. My plan is to connect the projector as a second (small) display and put my slides and live-demo ...
5
votes
2answers
1k 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
2answers
551 views

Screenshots from multiple Xservers

I want to take screenshots simultaneously from multiple X servers on one desktop PC. I have multiple users logged in different terminals (tty1, tty2, tty3, tty4) who start multiple Xservers with ...
9
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
8k 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
1answer
2k views

How can I automatically disable my laptop's built-in keyboard in X.org?

Distro and X.org Version Information I am using Ubuntu 12.10 with xserver-xorg/quantal 1:7.7+1ubuntu4. Disabling Built-In Keyboard in X11 I have a laptop with a built-in keyboard that no longer ...
4
votes
2answers
970 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. ...
2
votes
3answers
120 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
7k 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
1k 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
613 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
437 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 ...