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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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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35 views

How do you make a toggle key using Autokey?

I want to use Autokey to toggle the e key on and off in a program called "xyz". So if I press e, the program thinks I'm holding down e. I press e again, it thinks I released it. How do you do this ...
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20 views

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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Missing KeyPress event

I got new thinkpad and it's missing a ContextMenu key and has PrintScreen key where ContextMenu should have been. I remapped it using xmodmap. The problem is, the key is missing KeyPress events, only ...
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urxvt- play mp3 instead of beep

Does anyone know how to make urxvt play a mp3 file in replacement of a system beep? My PC does not have a pc speaker so I need a way to make terminal notifications go through sound card.
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30 views

How can I uniquely identify different GVim instances?

With gnome-terminal, I can use the --role command line argument to make the new terminal window uniquely identifiable by the window manager or other applications, for example: gnome-terminal ...
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22 views

FVWM: Make xterm stay on top, conditionally

Algorithm: If there is no window currently on top, then make the next new xterm stay on top (layer 6). I got that to work: Module FvwmEvent AddToFunc MyUpdate + I WindowStyle StaysOnTop AddToFunc ...
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Run a script on window focus [closed]

I have a wacom tablet and I'd like to change the button configurations when I change applications. I figure I should run a script to override the previous xsetwacom configuration every time the focus ...
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1answer
18 views

setxkbmap: Multiple layouts with different variants

Using setxkbmap from a user's .xinitrc, I'd like to configure: German keyboard layout (de) without dead keys (variant nodeadkeys). French keyboard layout (fr) with dead keys (variant basic). So ...
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29 views

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 ...
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23 views

Modeline for Dell U2415 1920x1200 resolution

I'm trying here to run my secondary display (U2415) on the native resolution 1920x1200. Xrandr unfortunately reports only 1920x1080, which is not satisfactory. $ xrandr Screen 0: minimum 8 x 8, ...
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Java programs steal focus in X11

I run IntelliJ IDEA & some other Java GUI apps on my linux box. Every one of them tends to steal focus when launching up, and doing it in stealthy way. E.g.: I run IDEA, it starts up in ...
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164 views

Can I put multiple X windows into a single larger window?

Say my main process spawns a couple windows. I'd like to group them in a session-leader master window (a just-the-frame minidesktop for the window group if you will). What can I do to achieve this? ...
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1answer
20 views

Cannot log in to my Debian Wheezy 7 system

I have a Debian Wheezy 7 installation. When I turn it on it boots to the log in screen normally. However when I type in my username/password and try to login the screen briefly turns off for about one ...
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22 views

Xorg configuration hook for unblank screen

Is is possible to execute a command automatically when X comes out of a power saving screen blank? I.e., something that would be triggered when I hit a key/move the mouse to power up the display ...
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1answer
29 views

ssh with -Y results in “shell-init: error retrieving current directory: getcwd: cannot access parent directories…”

I ran an X app sudo'ed from my normal account, using: mylappy$ ssh -Y me@myhost.com me@myhost.com's password: [me@myhost ~]$ sudo su - [root@myhost ~]# su - me -c 'xauth list' |\ grep `echo ...
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1answer
27 views

Nvidia drivers debian wheezy

I had some problems with my graphics card. I tried following the instructions from here https://wiki.debian.org/NvidiaGraphicsDrivers to install the appropriate drivers. The result is I can't ...
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What is `/tmp/.X11-unix/`?

I asked Google the same question and didn't like the results I got. What is /tmp/.X11-unix/?
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How to keep displays “set” and not vanishing when screenblanking or turned off?

I have thee screens and am finding it very annoying and distracting to find (1) my X settings have changed to make the leftmost Primary and not aligned right, and (2) all the windows moved onto the ...
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How to set up XKB to work with 3 modifier keys and 2 switchable layouts?

Consider the following XKB layout: xkb_keymap { xkb_keycodes { <ESC> = 9; <FK01> = 67; <FK02> = 68; <FK03> = 69; <FK04> = 70; <FK05> = 71; ...
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1answer
30 views

How configure properly vncserver in Red Hat Enterprise Linux Server release 6.5

I'm trying to start vncserver in a Red Hat Enterprise Linux Server release 6.5 with an user created for that, and when I type vncserver I got this: WARNING: The first attempt to start Xvnc failed, ...
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1answer
15 views

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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25 views

My shift/ctrl and numlock keys stopped working

My ctrl and right-shift keys are not responding, though they still work in a VMware window. Numlock doesn't work. A held-down key does not repeat. clicking in a field in another window does not make ...
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Cannot resize windows remoting-in through X11VNC?

As title says, I am remoting on to a Linux box (CentOS 6) using X11VNC. However, I cannot resize any windows manually by hovering over the frame, because the frame resize cursor does not appear. ...
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Copy to both X11 clipboards from vim

As far as I can see, with VIM I can choose between set clipboard=unnamed - yank to X11's primary selection buffer (middle-mouse button paste) and set clipboard=unnamedplus - yank to to X11's ...
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General way of debugging vmware mouse issues in X11

I run a virtual vmware archlinux installation, and constantly have problems with mouse grab/ungrab. At some point it was fixed by commenting out pointer lines in 10-evdev config, but on every update ...
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How do I obtain a handle to the Window Manager frame for a given Window in Xlib?

So I'm making a screenshooter app that gets the active window using XGetInputFocus(); but when I try to take a screenshot of that window using XGetImage, I get an image without the window decorations ...
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1answer
35 views

Start a single color full screen from the terminal

For testing displays, I need to show a single color fullscreen, and quickly switch from one to the next color. Can this be done from the terminal? Something like this: DISPLAY=:0 color #ff0000
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1answer
15 views

Xmodmap remapping Caps, but still triggering Caps Lock

Im using CentOS 6.5 workstation, pretty standard config, with normal dell keyboard, EN/US lang and keyboard layout. I have the following in the .Xmodmap keycode 66 = Control_L clear Lock add Control ...
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1answer
38 views

Remapping Caps Lock to Compose

Because I now and then need to use scandinavian letters despite using US Dvorak as my layout, I would like to use Caps Lock as a compose key. (I don't need Caps Lock at all, I'm not a forum troll) ...
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X11 oddness - Installer shows squares instead of text. Font issue?

Using X11 and launching of X applications generally works (using xming). However when launching websphere installation (IBMIM) the resulting gui interfaces shows squares instead of letters. Have ...
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How Are Keys or Keycodes Mapped to X Key Symbols?

I am trying to map a function key combination to an XF86 key symbol. The key combination is Fn+F1, which I was able to use showkey to get the raw keycode for. jason@io ~ $ showkey kb mode was RAW [ ...
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2answers
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What's the closest you can get to rebooting without killing all running processes?

How can I get the effect of rebooting on refreshing the system (freeing resources and reinitialising them) without killing most of the things I have running? Could I unload and reload kernel modules? ...
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3answers
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startx autologin does not run in /etc/inittab in after Debian Jessie update

I installed a minimal Debian system (stable) without GUI, switched to testing/jessie to be able to get the Cinnamon desktop, but X didn't start on boot. If I log in as myself at the CLI, I can type ...
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2answers
759 views

What is DISPLAY=:0?

What is DISPLAY=:0 and what does it mean? It isn't a command, is it? (gnome-panel is a command.) DISPLAY=:0 gnome-panel
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1answer
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Why can X11 access the video card?

This one is maybe a bit theoretical, but... How the heck can X11 touch the video hardware? As I understand it, X11 is an unprivileged user-mode program. But only kernel-mode software can access the ...
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2answers
61 views

My ssh server stopped working after I did something [closed]

I'm very new to Linux, BTW. The ultimate goal for me is to run applications and their GUIs on a (Mac) computer from another computer. The first step is to just use SSH to access and control the ...
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32 views

ssh x11 forwarding drag-and-drop

Is it possible to drag-n-drop into x11 forwarded application? For instance, I'm forwarding skype and I'd like to send a file by dropping it into message box. Yes, I know I can work it around. This ...
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40 views

How to attach keyboard and mouse to another screen?

By default, the X server would attach keyboard and mouse to display 0:0, but how to change it to another screen such as 0:20?
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oxmplayer is on top and blocking every other GUI application

I want to display notifications popups(osd_cat) on my screen while running oxmplayer but it seems that the latter is on top of everything and doesn't allow the notification to appear. I run the ...
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10 views

How can I maximise Netbeans window from the terminal?

I am on CentOS 6 and using VNCViewer to remote in to a box which has four monitors. The problem is VNCViewer won't allow me to click on the Netbeans Window "Maximise" square, top-right, so I can ...
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1answer
55 views

GParted Live on Hard Disk with Ubuntu

Edit Please note that I fixed the original problem of not booting, but I still can't get it to run X-windows after being prompted for language, input, and display resolution. Original question I read ...
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1answer
48 views

How to set the monitor brightness gracefully at boot time?

I've been using a loop that contains xrandr --output VGA1 --brightness 0.3 in a bash script which will automatically execute right after logging in by gnome-session-properties (a.k.a. Startup ...
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how to display osd_cat on a remote HDMI Screen [duplicate]

i have installed xosd an used osd_cat to display text in my screen. the problem is that i cant do it on the remote station on the remote screen through SSH. I want to execute osd_cat on the remote ...
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2answers
36 views

How to disable the keyboard's numeric keypad?

I want to disable all numpad keys; the ones located on the right side of my keyboard. How can I do this? Of course, I would also like to know how to revert the action an re-enable the numeric keypad. ...
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31 views

Xorg/Twm window has focus only when mouse is over

I have Xorg with Twm and xterm installed on Arch linux, and when I start the X server, I can type in xterm only when the mouse pointer is over its window. I have been searching options to Xorg and Twm ...
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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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1answer
39 views

How to remotely send a keypress to an X11 application?

I've got an X11 program (Mathematica/Linux) running which contains unsaved data (calculated after I left; unfortunately I didn't have the foresight to programmatically save the data). Now I've gotten ...
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52 views

Increase the number of lines scrolled by a mouse wheel tick, everywhere

When I use the mouse wheel, I want to be able to configure it to scroll by multiple lines at a time, e.g. each tick would scroll 5 lines. In Windows you can increase or decrease the number of lines ...
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2answers
33 views

How display a text for users in the entire screen

I want to display a text above the user screen(as an upper layer). I know that there is solutions like xmessages that could display the text in a box, But need it to be displayed without a box on the ...