X.Org Server (commonly abbreviated to Xorg Server, XServer or just Xorg) refers to the X server release packages stewarded by the X.Org Foundation, which is hosted by freedesktop.org, and grants public access to the standard X Window releases for the efforts of the free and open source software ...

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Ubuntu - connecting 3rd monitor fails with “xrandr: cannot find crtc for output DVI-0”

I've got a laptop with a DVI and VGA output on the back. With everything connected it will only allow me to run 2 of the 3 monitors e.g. laptop display + VGA or DVI+VGA but not all 3. xrandr says I ...
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1answer
4k views

Multiple users on one computer with different monitors on Ubuntu/Linux

I got a GTX 670, which powers my three monitors. But I got a processor with a HD4000 integrated graphics and I'd like to add a fourth monitor to the processor graphics, on which a different user works ...
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1answer
3k views

How do I run X11 applications remotely?

How can I run X11 applications hosted on a remote server, given the following goals: Run anything that would run locally on the server. This includes OpenGL apps which use GLX. Seemless integration ...
4
votes
1answer
1k views

How to know which modifier keys are which in X11?

I have X11R7-based desktop linux. I want to debug key modifiers of my keyboard. I have some left and right controls, alts, metas, etc., but for some reason (1) I'm not quite sure which is which from ...
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1answer
5k views

Pulseaudio Daemon Startup Failed

When running startx on Arch Linux, the error: E: [pulseaudio] main.c: Daemon startup failed. is returned. Is there any way to fix this error?
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2answers
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Xorg compose key without losing valuable key / bypass mode?

I would like to setup a compose key, but the only options available in the KDE system settings (and via /usr/share/X11/xkb/rules) are: compose:ralt Right Alt compose:lwin Left Win ...
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1answer
4k views

/etc/environment not being read into PATH variable

In Ubuntu the path variable is stored in /etc/environment. This is mine (I've made no changes to it, this is the system default): $ cat /etc/environment PATH="/usr/local/sbin:/usr/local/bin:/usr/...
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2answers
389 views

compose-key mappings differ between gtk and qt apps

I'm noticing that there is an inconsistency in the output of one of the compose-key combos. When I type ( [Compose] . . ) under Chrome, gedit, gnome-terminal, or roxterm I get the character '˙'. ...
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2answers
4k views

How to fix X11 font issue on Mac?

X11 on the Mac does a horrible job drawing fonts. I'm trying to use the GIMP and Inkscape and the menus, and other text, don't draw correctly half the time. What is the fix for this?
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1answer
361 views

XFCE/X11: Keyboard layout changes overnight, special symbols can not be entered

A very weird problem After work, I lock my screen and go home The morning after, my keyboard layout has changed from de_CH to en_US At random times, my urxvt-tabbed windows don't accept special ...
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2answers
4k views

amd gpu but display on intel integrated graphics

On my Ubuntu 12.04 I connected my monitor to the onboard intel graphics. I'd like to use my ati radeon 6770 for opencl tasks (e.g. bitcoin mining). So far I couldn't figure out how to get the ati ...
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1answer
4k views

enable x authentication over ssh for the root

over ssh - $xclock $sudo su - #xclock X11 connection rejected because of wrong authentication. so I do - $xauth list /*copy the lines*/ $sudo su - #xauth add /*paste the lines*/ #xclock /* ...
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2answers
734 views

Per-application window scaling in Xorg for high dpi display

I am running Gnome Shell with a 4k monitor and there are a few applications that I use that don't scale at all with the high resolution. Here is an example of LMMS, an application that hasn't yet ...
4
votes
1answer
118 views

Linux: Prevent keyboard turning screen on under X

I'm trying to bind a key (using xbindkeys) to turn my monitors on/off under X. So far I have the key bound to this script: #!/bin/bash MOUSE="Logitech USB-PS/2 Optical Mouse" if [[ ! -z $(xset q | ...
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votes
2answers
3k views

Fedora 20 FirewallD GUI not working on X11 forwarding

I am having a problem with SSH X11 forwarding on Fedora 20 with firewall-config, the GUI tool for FirewallD (the dynamic firewall system). With most X11 GUI applications including pretty much all "...
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votes
1answer
1k views

Some keys don't appear in xev

I can't change my screen brightness by pressing brightness keys on the keyboard, but they change through /sys/class/backlight/acpi_video0/brightness. So I started to diagnose the issue. I ran xev, and ...
4
votes
1answer
2k views

Permanently Disable Dell Latitude 2120 Touchscreen in X.org Upon Start-up and Suspend/Restore

In the spirit of full disclosure, below is the background, tl;dr: I am running Lubuntu Oneiric and I want to disable my borked touchscreen, running it on X.org start-up works but suspending the system ...
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1answer
2k views

Why won't Xubuntu let me use dual monitors

ASUS laptop and Xubuntu (11.10) running off the live CD will give me my dual monitors, but when I install Xubuntu I can't set up dual monitors. When I boot from the live CD both monitors come on even ...
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votes
1answer
127 views

How does a window manager register itself with the X Server?

I was wondering how the window manager registers itself with the X server, and how it knows what process to kill when it goes about replacing the current window manager
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votes
1answer
842 views

How to change the GDM default background wallpaper to my customized wallpaper or solid color?

I was trying to change the Ubuntu 11.04 GDM default background wallpaper to solid color such as black. However it's not working; here is what I've tried so far: From the terminal: xsetroot -bg ...
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votes
2answers
451 views

Unexplained red dots in screenshot

I've been having the weirdest problem with some aspect of my operating system: This is a screenshot of Google Chrome 11.0.696.57 running in Linux 2.6.37.6 with Xorg server 1.9.5 with the FGLRX ...
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1answer
1k views

Configuring three monitors with two Radeon X1600/X1650 graphics cards under Ubuntu

I have three SyncMaster 932a monitors I want to use with two Radeon X1600/X1650 cards under Linux. I am running X.org X Server 1.6.0, as provided by Ubuntu's Wubi installer. After turning off ...
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0answers
2k views

VMware Tools skipping X drivers

[re-posting from the "Not Answered" thread, https://communities.vmware.com/thread/416544] When trying to build VMware Tools, I get the following message: Detected X server version 1.11.4 ...
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votes
1answer
162 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 ...
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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 ...
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votes
0answers
710 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
1answer
872 views

Fullscreen (youtube, games) does not fill main screen, is shifted between two monitors. Linux

I am trying to figure out where can I set position and size of "fullscreen view". I am running Ubuntu 12.04 LTS, with XFCE on ThinkPad T400 (Intel HD4000 graphics card, 1280x800) with one external ...
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votes
1answer
2k views

Synergy config dual monitors separately

In Synergy, is it possible to set up your config so that you have one server and one client, both with dual monitors, but the client machine has its monitors such that one is on the left of the server'...
4
votes
1answer
640 views

Ubuntu Lucid (10.04) subpixel font rendering crashes Xorg

I really don't know how to solve this on my own so I thought giving this site a chance. After upgrading to Lucid I ran into some problems. With some experimenting I came to a conclusion that if I ...
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votes
4answers
23k views

Xauth/X11 ssh forwarding problem

When logging in with ssh -Y remotehost I get the following error message: /usr/bin/xauth: /home/hlovdal/.Xauthority not writable, changes will be ignored And xclock and similar fails to start....
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votes
1answer
542 views

When you use X forwarding to run an application on another computer, which processor does it use?

If I use ssh -X to run an application from Computer A on the screen of Computer B, how are the computation and resources divided up between the two computer's processors? Sometimes the audio will ...
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votes
2answers
3k views

Moving from windows to linux : Understanding - X Window System, X Server, Xorg, Xfree86

I'm a windows developer(Win32api) moving from Windows to Linux. While installing linux there are lot of things to know about X11, X Window System, X Server, Xorg, Xfree86 and what not. How come we ...
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votes
5answers
243 views

OpenOffice 2.4.1 in Mac OS X

I just downloaded OpenOffice 2.4.1 for Mac OS X and now every time I open it an xterm terminal window opens up with a Bash prompt. Is this normal behavior? Can this be turned off?
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votes
2answers
592 views

Can I place and scale an X window precisely using the command line?

I need my window to be exactly 1280x720 pixels in size, and placed at the offset 1940x20. Is it possible to resize and place an arbitrary window, for example my editor window or browser window, very ...
3
votes
5answers
24k views

Linux Mint fails to start X automatically after update, but X still works

After some update and reboot, X fails to start. I don't get any errors or warnings from the console, after the last service has started, nothing happens. I can then switch to any terminal I'd like, ...
3
votes
1answer
944 views

How do I unmaximize a window with xdotool or similar by command line?

With xdotool or wmctrl I can move or modify window attributes but if it is maximized none of the commands work. How do I "unmaximize" the window?
3
votes
2answers
919 views

Is it possible to run mac osx apps on a X11 server?

I can successfully open a ssh -X connection from host.home to host.work (both Mac OS X). X11 is running on host.home. When I start xterm or xeyes on host.work I see it on host.home, but if I start ...
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votes
3answers
373 views

What is the point of the xorg package in Ubuntu?

I am about to do a minimal installation of Ubuntu 10.10. First, I'll do a command-line install with the minimal Ubuntu cd. Second, I want to install a minimal version of gnome. So I am simply looking ...
3
votes
2answers
607 views

Graphical equivalent to /dev/null?

I'm trying to run a GTK-based plotting library that I wrote over an SSH terminal that's too slow to run an X session over. GTK assumes that a graphical display is present and won't work otherwise. ...
3
votes
1answer
958 views

Running into errors reattaching to a GNU screen session that tunnels X over SHH

After tunneling X over an SSH connection using screen on the remote, how can I reattach the screen session from another machine and tunnel X to that other machine? I either get "cannot open display" ...
3
votes
3answers
1k views

X Session from Mac

How can I log into an X server from Mac OS X? I know that ssh -X username@host will log me in and I will have the capability to run X applications. On Cygwin/X you can log in and have a whole X ...
3
votes
2answers
963 views

X11 forwarding with an already running window?

I'm trying to forward the X session to my Windows laptop (using Xming and putty), and I have no problem opening new programs such as gedit and having them forward, but how would I forward something ...
3
votes
1answer
672 views

Recover an application in sleeping state after an X server crash

I often run calculations on my Linux computer, which cause my X server to crash from time to time. Almost always, some programs seem to survive to the crash and are in an interruptible sleeping state, ...
3
votes
1answer
346 views

X11 keyboard utility to display key presses?

I'm having trouble with an Asus Q500A laptop and its hotkeys under Fedora 20. They are the function keys that turn the wifi radio on/off, change keyboard backlight, the display brightness, volume up/...
3
votes
1answer
948 views

How do I stop ssh-agent from forgetting my password after I login to the screen session from SSH?

I have a screen session open in an lxterminal window. If I SSH somewhere, the first time it happens, an ssh-agent window opens and asks me for my private key passphrase, and after that ssh goes right ...
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votes
2answers
8k views

Setting primary monitor in ubuntu without xrandr

I am running Kubuntu 12.10. I have 3 monitors plugged into a AMD Radeon 7970. I have tried switching the order of the outputs, and configuring them repeatedly with amdcccle but kubuntu always seems ...
3
votes
1answer
16k views

Cannot open software remotely XQuartz Xlib: Invalid MIT-MAGIC-COOKIE-1 key

I am using mac os 10.8.2, and connecting to a cloud computing cluster through Xquartz. I do: ssh -CY <uname>@serveradress and then ./<softwaretoopen> and it opens the software ...
3
votes
2answers
141 views

How to have ESC also cancel CAPS if CAPS is enabled?

Is there any way to configure the keyboard so that pressing ESC will also cancel the Capslock feature, if Capslock is enabled? I specifically use Kubuntu Linux with ESC and Caps keys switched (VIM ...
3
votes
2answers
4k views

X11 and Mountain Lion: how to use MacPorts xorg-server?

OK, so X11 is not included in Mountain Lion anymore. That's OK, no biggie. Everyone everywhere says to go get the XQuartz packages for X11. I'm a developer, though, and have a ton of software managed ...
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votes
2answers
3k views

Using spare pc as second monitor

I'm looking for a piece of software that can enable a second pc to function as a second monitor via network. Both pc's are running linux so I would like something like MaxiVista only for linux. Is ...