The X window system (commonly X Window System or X11, based on its current major version being 11) is a computer software system and network protocol that provides a basis for graphical user interfaces (GUI) for networked computers.

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How to display a digital clock on the monitor on top of everything?

My graphical environment is FVWM2 on OpenBSD. How can we display a digital clock in the top right corner of the screen, on top of everything? So it shouldn't matter if a new window comes up, the ...
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How to find out the current (active) XServer DISPLAY number?

I'm using Arch Linux and things are not so easy when you try to discover the current Xorg DISPLAY (not through the env variable). Here is a working example: $ cat /sys/class/tty/tty0/active tty2 ...
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Cinnamon failed: desktop only, no panel, no dialog frame

I am using Linux Mint 14 (MATE) with Cinnamon installed. Cinnamon failed when I tried to delete an item on the menu with menu editor. The system froze, so I logged out by pressing Ctrl+Alt+Delete. ...
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How do I bind AltGr+key to a symbol?

I want to bind AltGr+W to æ, and some other combinations, how can I do this? I also need AltGr+Shift+W to Æ. I normally use setxkbmap to change the keymap.
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Copy file to xclip and paste to Firefox

I'm coping file to xclip cat file.txt | xclip I'm pasting without problem with xclip -o When I want to paste it to Firefox with Ctrl+V it pastes old text (that shouldn't already be in the ...
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How to recover missing serverauth so user can startx?

I've been using PCLinuxOS. All was OK until th Hard Drive had a bad block. After some fsck repair, from the shell, I tried to startx: xauth: file /home/joe/.serverauth.2052 does not exist. ...
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How to custom-tweak X resolution settings

Or should I rather phrase the question: how to construct a custom mode. The story is: I am a proud owner of an old EIZO monitor (IPS, etc...) which has started to display this flaw of bad lines. I.e. ...
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X Windows special programs: do some of these still exist?

I recall that X11 provided a number of "fun" programs accessible via unix. For instance, if you use the command xeyes, an interface will pop up of cartoon-like eyes which follow your cursor ...
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X Windows special programs: do some of these still exist? Which ones? [duplicate]

I recall that X11 provided a number of "fun" programs accessible via unix. For instance, if you use the command xeyes, an interface will pop up of cartoon-like eyes which follow your cursor ...
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Laptop keyboard occasionally stops working

I have a dirty solution that is to plug a USB keyboard in and execute the following command: setxkbmap -rules evdev -layout us -model evdev Afterward my keyboard will work. This solution only ...
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How I can make new pop up windows to appear in the same desktop of their app?

I'm using XFCE and I have the following situation: I open app on desktop #1 --> switch to desktop #2 --> app on desktop 1 opens a pop-up window on desktop #2. How do I change it? How do I make XFCE ...
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Arch linux: set keyboard layout to PL

I'm unsuccessfully trying to force my Arch to set pl layout on X start. I've googled for solutions, and I found couple of tutorials/tips but none of them works. My current, keyboard related ...
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Is possible to have full guest system under host installed via DebootstrapChroot?

My goal is installing Ubuntu 14.04.2 LTS under Debian 7 wheezy with full GNOME Desktop. I know I can use use tools like VirtualBox etc. but it seems like overhead. To be more precise under this Ubuntu ...
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xkbmap remap PrtScr and Insert Keys to Home and Escape

I've been fumbling with xkbmap for a while, and I can't figure out how to remap the Print Screen button to Home. It's as if the us keymap just doesn't mention the PRSC key code at all. I can't use ...
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1answer
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Resolving circular dependency hell for libX11 and libXi

I'm trying to install X11 from source. Source files from some repository: libX11-1.6.0.tar.gz libXi-1.7.1.901.tar.gz libX11-1.6.0 paulk@node005:libX11-1.6.0$ ./configure --prefix=$HOME/software ...
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Keyboard layout changed. How and why?

Yesterday, I upgraded my kernel (to 3.5.0-19-generic), rebooted, and had to reinstall my video drivers to get full resolution. (After upgrading the kernel, the resolution always goes to 640x480, until ...
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fontconfig availability on major linux systems

I need to install a font on my qt-based app, the function to do so says: Adding application fonts on Unix/X11 platforms without fontconfig is currently not supported. Since I'm a linux newbie ...
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How to know whether Wayland or X11 is being used

So I just installed the latest Kali Linux on my laptop which was based on Debian 7 (olstable). I then dist-upgrad-ed the whole thing to Debian 8. I've always wanted Wayland instead of X11, so I ...
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prevent multi-line paste in bash

I often use ctrl+c to copy text from some gui application and then paste it into my terminal emulator (terminator), using right-mouse-click-menu and paste. Sometimes I forget that the clipboard ...
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Make mouse movements scroll when the middle button is held down

In Windows, I'm used to clicking the center button and it offering a "fast scroll" option up or down. How can I get this behavior on Linux? It currently seems to use the back button upon center click ...
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1answer
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How to use Xfig on high DPI screen?

On a high DPI screen, lines in Xfig are very thin. Is it possible to scale the lines, or the entire Xfig UI? Note that I don't want to scale the entire desktop. Other application UIs are legible on ...
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PuTTY, CygwinX, and X11 forwarding connection refused

I am no longer able to forward X11 using KiTTY/PuTTY to CygwinX. I am connecting to an Ubuntu Server 14.10 machine that is correctly configured to allow X11 forwarding. I am able to initiate X11 ...
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1answer
779 views

Certain fonts missing from xlsfonts in Centos 6.4

I have a certain software on CentOS 6.4 that gave the following error: X Error of failed request: BadName (named color or font does not exist) Major opcode of failed request: 45 (X_OpenFont) ...
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Can I scale my HiDPI laptop display while leaving my external display unchanged?

I have a Chromebook Pixel 2, which has a HiDPI screen. My external monitor has the same resolution in width, but only about half the pixel density. I use Gnome's scaling settings to make things look ...
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Botched file op left a shade of “almost dropped” file, how to remove it?

One picture is worth thousand words, so: I know log out or restart most likely will do the trick. I want something that doesn't require them. Tried - no use: xrefresh xrandr tricks (revert, change ...
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Why does the X Window System use a server?

I never really understood why a window system must have a server. Why do desktop environments, display managers and window managers need xorg-server? Is it only to have a layer of abstraction on top ...
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1answer
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How to change the DISPLAY that an X application is running on (in Linux)?

I know that I can specify what display an X client runs on with a command like gedit --display :0 in Linux. I want to move an application to a different display after it has started. How can I do ...
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1answer
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Can you assign arbitrary keybindings in xmonad?

I know how to set up keybindings where you have to hold down one of the keys of type KeyMask. Which are: Alts, Ctrls, Windowskeys. Also, giving 0 as the KeyMask can be used to define single-key ...
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Ignore a bluetooth mouse events

(using Ubuntu 14.04.2, X/Gnome/Unity) I'm trying to have Gnome/X to ignore a given Bluetooth mouse events. The mouse should be paired successfully, though. The reason being that the mouse is used ...
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1answer
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Running remote GUI application over SSH as a standard non-admin user [duplicate]

I'm running a HelpDesk for internal call center employees. All employees have headsets in conjunction with their jobs, and I'm working on a script to remotely launch a minimized Mumble session via ...
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Have 1920x1200 and 1024x1280 monitors combined to 2944x1200. How to use the 80 unused lines of screen area on the 1024x1280?

The left monitor native resolution is 1920x1200 in landscape mode. The right monitor native resolution is 1280x1024 but rotated to portrait mode, so 1024x1280. Because the mouse would get trapped in ...
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Run script after changes in X server geometry

Is there an option to run a given script after the X server geometry is changed (or every invokation of xrandr)?
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In X11, how can I create a custom key combination that maps to PgUp, PgDn, Home, and End?

My keyboard does not have keys for Home, End, Page Up, and Page Down. I would like do the following: Map Shift+Alt+⇦ to Home Map Shift+Alt+⇨ to End Map Shift+Alt+⇧ to Page Up Map ...
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Changing dwm keyboard in linux [duplicate]

I can't get dwm to set the keyboard layout. I have tried changing the file /usr/share/xsessions/dwm.desktop. I have changed the line Exec=dwm by Exec=/home/atc/dwm-init with this ...
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X11: XRaiseWindow and XLowerWindow do the opposite of what is expected. Why? [migrated]

While trying to implement click-to-focus in my custom window manager, I noticed that windows were lowering when I clicked on them, instead of raising. The lines in question looked like this: ...
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1answer
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Map Right Alt to Alt instead of AltGr

I have a Kinesis Advantage keyboard and I'm trying to make it so that my right and left Alt keys do the same thing. Currently the left Alt key works as expected but the right Alt key just allows me to ...
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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 ...
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How to make the multiuser access to x11vnc in FreeBSD 10.0

I try to set up the multiuser access to KDE via x11vnc using x11vnc -guess I receive an login screen on vncviewer, but after user registration, when display:0 is created, other clients also get ...
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X11 sessions: when a session starts and ends, does `gdm` run a session?

I'm quite confused with X11 sessions. Namely, I don't understand, when an X session starts: I want to programmatically start an X session with my own bob-session program, analogous to gnome-session. ...
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1answer
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Trying to get firefox running on CentOS 6 minimal iso - can't open display

I've got minimal CentOS 6 running on an Oracle VirtualBox on a Mac. I'm trying to get Firefox up and running so I can download some web files into the VM. I installed Firefox (yum --enablerepo=remi ...
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1answer
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Find processes reacting to a given keybinding [duplicate]

Is there a way to know which processes are listening to a given key binding? For example, suppose I want to know which programs will do something when I press Ctrl+g. I guess the X server manages ...
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What is the reason for the apparent lag of a mouse pointer when running a Linux Desktop?

So this question might at first seem a little vague and it's most certainly not trolling or having a dig at Linux. It's always been my observation that most Linux based desktop GUIs seem to have ...
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What are the differences between xdotool and xautomation?

xdotool and xautomation are two command line X11 automation tools. I've used the former for a while and only recently found out about the existence of the latter, and I'm curious to know what someone ...
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1answer
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Turning off part of a monitor

I'm trying to disable the right third of my monitor, since it's broken. I can get less to be displayed using xrandr, but the monitor will then center the displayed stuff, so that's not quite what I ...
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What are .serverauth.##### files in my home directory?

The files are .serverauth.##### where ##### is a 5-digit number. I have a handful of these files in my home directory with a broad range of creation dates spanning a couple of years. What are these ...
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1answer
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setxkbmap switches between 2 out of 3 layouts

Issuing that command: setxkbmap -layout "us,ua,ru" -variant ",winkeys" -option "grp:shift_caps_toggle,grp_led:scroll" -model pc105 -rules xorg When hitting Caps Lock+Shift I'm switching between ...
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GLX extension not working properly with xvfb

I have an Ubuntu 14.04 system with the following packages installed: libegl1-mesa:amd64 libegl1-mesa-drivers:amd64 libgl1-mesa-dri:amd64 libgl1-mesa-dri:i386 libgl1-mesa-glx:amd64 ...
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1answer
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Difference between server-side and client-side compositing in Xorg?

xcompmgr provides the following option: -s Server-side compositing with hard-edged shadows. From experimentation, I can say that this is much, much faster than the "client side" options. But ...
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1answer
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build X11R7.7 from sources - in which order

Is there an automatic way to understand the order in which individual libraries of the X11R7.7 package should be built when I want to build all of util, lib and xcb?
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1answer
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How does one use the setxkbmap -geometry option?

I have a Sun Type7 keyboard on my Debian Linux (/etc/debian_version == 7.8) box, and, since it appears to be much like the Sun type6 I attempted: $ (setxkbmap -model sun6 -layout us -geometry ...