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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display no longer listends to console after starting X11, not even after shutting down X11

From the console, or another virtual terminal, I launch X11. This is in Free BSD. I cannot return the display to any other terminal afterwards. By using the ctl-alt-F1 key combination, for example. ...
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How do I find out what program 'owns' a hotkey?

I'm running XFCE 4.12 on top of Gentoo with a 4.2.0 kernel. My PlayPause button on my keyboard used to work as a global hotkey for VLC. Now VLC won't even recognize the key. It does see "Alt + Media ...
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libvte unicode font handling

I am trying to display some ANSI text which contains characters from the Unicode private use area. I have two fonts which contain these characters. The first is a PCF (bitmap) font, and the second is ...
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32 views

When is the appropriate time to start Redshift using upstart?

I have been trying to get Redshift to start before login so that the bright welcome screen does not blind me, in particular when switching users. Running Redshift as a service does not seem fully ...
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1answer
14 views

lxde stop auto maximize vertical when moving window to right edge of screen

I am running lxle version 14.04.3. I would like to stop lxde from maximizing my window vertically when I drag a window to the right edge of the screen. Does anyone know how to change this setting?
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Permanently Configure two X Servers

I'm trying to permanently configure a second X server to start at runtime on RHEL 7. I am aware that I can start a second x server using startx -- :1 vt 2, but I'd much rather integrate it to the ...
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39 views

Please explain the output of ssh control command ~#

I'm trying to figure out why it is that ssh hangs on exit if, and only if, I login with the -X option and run X11 programs. I found a thread on Google groups which hints to the problem. The ...
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minimal window manager to enforce visual chroot and exit on application exit

I am trying to have a kiosk style setup on raspberry pi where only one application is available via VNC e.g. gedit or firefox. Using a guide like this http://gpio.kaltpost.de/?page_id=84 the setup of ...
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Stuck in failsafe xterm session

When I log in through the login screen, I'm presented with the following message: This is the failsafe xterm session. To get out of this mode type 'exit' in the window in the upper left corner ...
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24 views

Use xvfb to automate X program

I originally posted this question here, but upon second thoughts I decided here was a better place for this. I sadly have to use this proprietary program that bundles a camera driver. I want to ...
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39 views

Cannot run evilvte (VTE terminal emulator) as user - except via SSH

I have compiled evilvte from source, on an old Nokia N810 tablet. When I try to run it as user, it opens and then immediately closes. If I try as su root it works fine. I can also run run it as user ...
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Context menu position wrong gtk3 on hidpi

GTK 3 seems to have a problem with when running on hidpi screens outside gnome shell. I have dpi and screen dimension correctly configured via xrandr (192 dpi), i3 runs just fine. In ...
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why do I get “reason is: this server does not require authentication” in xpra

I 'd like to use Xpra as described on https://help.ubuntu.com/community/Xpra. However, I'm using the Xpra Windows client to connect but it doesn't work & and I keep getting an error message "this ...
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cannot launch konsole from xterm

I installed lxde & kde (along with konsole). now I launch xterm from a Windows host using Xlaunch(Xming) which works fine but when I want to launch konsole(my preferred shell) I get this error: ...
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14 views

Start terminal when VNC starts and execute a command within the new display

How can I start a Terminal within the new Display, and execute a command in that Terminal soon after VNC's startup automatically?
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11 views

Run OpenGl program on remote server

I often use X11 forwarding (occasionally VNC) to work on a remote machine, and this has worked great. But now I need to run a program that uses a specific version of OpenGL that means it doesn't work ...
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1answer
18 views

How to keep gnuplot-x11 graph window open until manually closed?

For example, this keeps the gnuplot-x11 graph window open until a key is pressed: gnuplot -e "plot \"file\" ; pause -1 \"text\"" How to keep it open until manually closed?
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Xlib without X11? Any library or system is capable of doing this?

First of all, the X protocol can't be fully understood without a server-client architecture, but, however, most XWindow applications use Xlib and Xt in a way that could be encapsulated inside Xlib ...
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not able to remotely display X11 applications

I have a server o which I have shell & VNC access. I don't like VNC for my X11 applications but prefer to render them on my Windows 7 system with Xming. Now, I have setup a few application ...
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Cygwin X seems to have messed up my Xming connection to my X-server

Yesterday I played around with Cygwin and ended up installing Cygwin/X on my local machine. I had a bunch of Xming shortcuts to a remote machine where I would launch applications with remote desktop. ...
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why won't xpra connect from windows?

I'm having troubles with spotty connections using Xming to display X11 apps from my server (on my Win7 machione). I decided to try out Xpra. I followed the instructions on: ...
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1answer
12 views

xautolock/ssh-add can't interact with ssh-agent if launched from .xsessionrc

I use xautolock to lock the screen and suspend my laptop after a given amount of time of inactivity. This works fine. This is how xautolock is started from .xsessionrc: xautolock -time 60 ...
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How to execute a command on window focus/unfocus?

I'd like to execute xinput disable bcm5974 when Gnome Terminal (and maybe some other application) gets focused, and xinput enable bcm5974 when it loses focus. This is because libinput and my ...
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Setting usable area of the screen

I am creating a dock for my own usage. The problem is, when I maximize a window, window takes dock's space too. Is there a way to restrict the area used by other windows? I guess it is related to ...
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1answer
16 views

Undefined reference to symbol 'XSetFillStyle'

I'm trying to compile, or make for Esetroot, when I get an error shown here. Is there some kind of command line argument I have to add to make, The header files are added to the c file already, so I ...
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1answer
38 views

make x11 window always on top (virtual keyboard)

I'm hacking on matchbox-keyboard. Its UI is written in plain x11. I just want it to be always on top because it is a virtual keyboard; a virtual keyboard can't just get below programs! I don't want a ...
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How to delete all desktop notifications forever on SUSE KDE

I can't find the "get the hell away from my desktop" button, on SUSE 42.1 KDE. I want any version of a desktop notification gone forever. I have log files, I know how to use them. The desktop ...
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1answer
20 views

Ask password in window mode after sudo or other command line operations?

Was seen in movies, that after command line operations, the password was asked in separate GUI window. From my (small) experience, password, required from command line, was always asked in command ...
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1answer
31 views

Looking for a map of the xinit/startx rabbithole

Can someone point me to an authoritative guide to the X11 initialization sequence that also explains how it dovetails with the shell's initialization? I'm trying to figure out how to make some ...
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31 views

Launching application without titlebar and window decorations

I want to launch VLC without the titlebar and window decoration. I'm using the following line to launch VLC: vlc -I dummy --no-video-deco --no-embedded-video test.mpg Unfortunately this doesn't ...
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107 views

Perfectly pixelmapped fonts in Emacs

In Ubuntu, in IntelliJ, the font PragmataPro Mono looks like this: Note the perfectly mapped pixels. The IntelliJ setting Appearance & Behavior > Appearance > Antialiasing > Editor is ...
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64 views

Graphics glitches on Intel HD Graphics 530

What's the cause of these glitches: https://youtu.be/llS6JwZAT74 ? The horizontal lines appear on screen redraw. They happen most often on Alt-Tab, or switching to desktop (as in the video). The ...
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2answers
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xdotool: How to search for window by title and class with different patterns (similar to AutoHotkey)

xdotool lets you search for windows using its search subcommand. I need to locate a window, that has class 'gvim' and title containing word 'TODO'. How do I do this? What I've tried: You can do ...
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2answers
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Who stores copy/paste buffers in X11?

When a piece of text is highlighted with the mouse, it can be pasted by middle-clicking on the place you want, or by using the always classic Shift+Insert key combo. But, when the area where that ...
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Define a compose key via X config files?

How do I define a compose key for X, preferably via some persistent configuration file? I tried: /etc/X11/xorg.conf.d cat 90compose.conf Section "InputDevice" ...
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1answer
22 views

Is it possible to run multiple x sessions with each functioning properly?

I have tried running startx twice before and having two X sessions at once. However, I recall that time I tried it (which was on my Raspberry Pi) there were many strange bugs and errors. Are there ...
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2answers
37 views

What is the difference between starting x and starting the display manager?

What is the difference between running startx and starting your display manager with sudo service (display_manager) start? Two different events happen, so I am curious as to know the difference ...
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1answer
26 views

Copy file to clipboard as text/html

I would like to copy the contents of a file to the X11 CLIPBOARD target text/html using the command line. Ideally, this would be as portable as possible across different flavors of Linux and possibly ...
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1answer
28 views

input method to type math symbols?

Is there some input method to easily type math symbols UTF8 characters (like U+2200 FOR ALL ∀, U+2203 THERE EXISTS ∃, U+2208 ELEMENT OF ∈, U+2190 LEFTWARDS ARROW ←, etc...)? I would like to type ...
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1answer
14 views

How to set the keymap for keyboards that are plugged in later?

I have configured my keyboard layout by adding a call to setxkbmap to my .xinitrc. This works for my laptop's internal keyboard and for any external keyboard that is plugged in when the X server ...
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1answer
76 views

OpenBSD- ignoring a particular keypress

I am using a Lenovo Yoga and the screen always sends out some "keystrokes" to indicate its orientation or simply being open, I don't know. On Linux, I could ignore those keystrokes with setkeycodes ...
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21 views

Scrolling with mouse while right button held down

I'm trying to configure my mouse to push down a button (right), hold on and drag down/up on a page resulting in scrolling the page like I would do with the wheel. I found the following question/answer ...
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2answers
58 views

Using BASH to determine if X11 forwarding is enabled from SSH

After logging into a network via SSH, the network's default shell being used is BASH. It is then possible to run applications which utilize graphics only if X11 forwarding has been enabled which I ...
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1answer
19 views

X Forwarding over SSH when switching users [duplicate]

How do I forward X when switching users? I can ssh -X username@server.example.com and open GUIs just fine. However, then when I sudo su to root, the X11 forwarding seems to stop because the windows ...
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1answer
62 views

Why won't NVIDIA X Server Settings configuration save on reboot?

I'm on a 64-bit machine running Debian 8.2 "Jessie" with MATE Desktop Environment. I have a Geforce GTX 650ti video card. I'm logged in as a non-superuser account named "john." I open NVIDIA X ...
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How to set-up mac-like accents input on Linux? [duplicate]

When I hold a letter button on Mac, a pop-up appears asking if I'd like to enter an accented version of this letter (like é or ë for e). Can this be configured to work the same way on GNU/Linux?
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How can I remap mouse buttons to modifier keys?

I have a fairly standard Logitech M510 wireless mouse with the three regular buttons, forward and back buttons, and scrolling and sidescrolling. The forward and back buttons are worse than useless ...
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2answers
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Keyboard misconfigured after resume from suspend-to-ram

I suspend to ram. Sometimes when I resume, some of the keys do not work. Some keys are reacting, but ALT-TAB for one is not. What can I do to ask the autodetection to retry configuring keyboard?
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1answer
107 views

How to Run a GUI Application on Remote Server's X11 Display via SSH

In this picture, on my virtual-machine I have Redhat running with an SSH server, and I'm remotely logged-in via SSH. I want to run gedit via SSH but have the gedit window open on the remote Redhat ...
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36 views

Which X Window system is installed on my server that would work with Xming

I would like to use Xming to connect a server and managed to get it to work. I am now trying to get it to connect to a different server but i am not sure which X Window system is installed. I tried it ...