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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Forwarding X-windows through a su - session

I'm trying to forward my X windows, but seems to be limited to just on session? What I'm trying to do is invoke x-applications as another user, through a sudo su -. If I know the other user's ...
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Left-clicks not working for any device in openSUSE Tumbleweed

Okay, so I really am at wit's end here. I had this problem where my left click stopped working randomly. It had happened once before, but I thought it was a non-issue, as the problem manifested when I ...
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35 views

Cinnamon: Which software project “owns” the “Display” configuration dialog?

Cinnamon 2.8.8 64-bit, Linux Mint 17.3 'Rosa' Menu > Preferences > Display The dialog allows to enable and disable (multiple) monitors, and position them relative to each other with drag and drop. ...
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how to create an icon button in X11?

I am using x11 library for creating a simple window application in Linux. I want to add an icon button (graphical button) to my app - something similar to this: Are there any instructions on how to ...
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How to start x11vnc by socket (ie only when needed)

Actually I start x11vnc in /home/odroid/.config/lxsession/LXDE/autostart with @/bin/x11vnc -bg -forever -shared -rfbauth /home/odroid/.vnc-passwd -noxdamage -norc -noxrecord -capslock -no6 -rfbport ...
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113 views

Ubuntu 16 stop lightdm and start xinit/xterm

I am working with Ubuntu 16. I have been able to stop the desktop environment using: sudo service lightdm stop Now I would like to start, from another terminal in a console environment, the X ...
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25 views

SECONDARY clipboard [duplicate]

I know that X has three clipboards. How do I use the SECONDARY clipboard? Is there a shortcut for copying/pasting from it?
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X11 multi-pointer, pointer conflicts

In an attempt to continue using my PC whilst automating a GUI application, I have created 2 pointers on my machine using xinput, one being controlled by me, the other by pyautogui. on my system this ...
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47 views

Closing many gnuplot -persist windows

I just opened more than a hundred persistent graphing windows using gnuplot -persist with x11 on a RHEL desktop. Is there any easy way to close them all? I don't really want to logout/in or click ...
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45 views

How to change mouse acceleration in X permanently?

I've found this link about how to change mouse acceleration: xinput --set-prop 14 293 1 This works for me. I've tried putting this to my openbox's autostart script, but after some time my mouse ID(...
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51 views

Remapping Caps Lock for every session

I use the following command to remap the Caps Lock key to Esc: setxkbmap -option caps:escape Unfortunately, I have to type the command every time I create a new session. I tried putting it in my ....
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61 views

X11 forwarding via SSH and su

For me, it is weird that while using ssh connection with X11 forwarding, a user and root are able to see xclock, but another user is not able to see that. Why? mahmood@cluster:~$ xclock ^C mahmood@...
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How can I map the Caps Lock key to ShiftInsert on xubuntu [duplicate]

For a long time I have disabled my Caps Lock key using xmodmap. However I would now like to map it to something useful, specifically Shift+Insert which does the same as the mouse middle button (if ...
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12 views

Display RGB database foreground/background combinations

I'm trying to adjust color in X. I seem to recall that there are a couple of utilities available to experiment with foreground/background combination while displaying all the colors. Anybody know ...
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69 views

Best Graphics over X11 Forwarding

I am currently using Exceed to handle individual X windows being displayed back to my Windows machine and this works flawlessly. I'm using Windows as my Window manager, but I have also experimented ...
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57 views

restart X11/Xwindows without disconnecting ssh session

Is it possible to restart an X11/Xwindows session without having to exit the server I've SSH'd to? I'm currently using iTerm on OSX, and every so often X11 (I guess) times out (giving me the error ...
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360 views

Difference between .xinitrc, .xsession and .xsessionrc

I found three configuration files. .xinitrc .xsession .xsessionrc I know that the first one is for using startx and the second and third are used when using a display manager. But what is the ...
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27 views

How to start an app on specific head?

I'm trying to start cheese such that it runs on a specific head on a multi-head display setup. The application options include a --display=DISPLAY setting: $ cheese --help Usage: cheese [OPTION...]...
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GPU Offloading using wayland and x11

I have a media center pc with a discrete gpu (AMD Radeon R9 270x) and a internal intel graphics and I have some problems with the HDMI-audio output when using ALSA and the Radeon card. HDMI audio from ...
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X: Find out if a window is visible to the user i.e. not covered by others

I only want to execute a certain action with xdotool if the window is not visible to the user, this includes minimized windows, but also windows which are 100% covered by other windows (if no ...
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81 views

Using HID compliant mouse like device in ubuntu [closed]

Aim: I have a whiteboard which emulates a mouse. Thus, when you click and drag on the whiteboard it should move the cursor. I want to make a whiteboard work in Ubuntu. It works on windows. Device ...
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50 views

linux - show image on console / X11 [duplicate]

Is it possible to show an arbitrary image across the console / X11? In essence, I just want the video output to be the image. Is there a way to do that? I would want the console virtual terminals ...
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Disable CapsLock functionality on short press

Is there any way to make pressing CapsLock effective only on long press? for example it effect only when we press and hold it for half a second? (I'm using ubuntu 14.04)
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Keyboard shortcut to paste selected text to SECONDARY clipboard

I am aware that mouse selection and CTRL+C adds content to the PRIMARY and CLIPBOARD X Selections but I need a keyboard shortcut(or mouse) to have the selected text in SECONDARY Selection. Any leads ...
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113 views

Linux using whole swap, becoming unresponsive while there is plenty of free RAM

I am experiencing a weird issue lately: Sometimes (I cannot reproduce it on purpose), my system is using all its swap, despite there being more than enough free RAM. If this happens, the systems then ...
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Non-GUI based pin-entry for gpg

I'm in the process of remotely viewing and selecting hundreds of images, some of which are encrypted with a symmetric key. I log in to the remote desktop machine using ssh. The viewing is not fast, ...
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XKB: assign multiple keycodes to one behaviour (<ESC>)

I have a new bluetooth keyboard, and for some reason the keycode that the escape key returns is 172 instead of 1 (according to 'showkey'; the same codes have 8 added in xkb, so 180 instead of 9). By ...
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88 views

How to use xpra like xvfb-run?

xvfb-run allows me to open a display and run a graphical app and when the app finishes xvfb closes too. for example xvfb-run --auto-servernum --server-args="-screen 0, 1920x1080x24" nw script.js ...
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52 views

Specifying fonts in xterm

I'm having difficulty gettings fonts to display correctly in xterm. The situation is complicated by this being a headless server which I'm connecting to from a Macbook Pro via xpra, with no desktop ...
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Why does `xrandr` say I have 3 HDMI and 3 DP ports while I have only one HDMI and one DP?

This is what xrandr shows on my machine: $ xrandr -q Screen 0: minimum 320 x 200, current 3840 x 1200, maximum 8192 x 8192 VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 ...
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47 views

dconf fails when running X application from alternate user

In an effort to protect my personal files in my home directory, I am trying to run certain applications as an alternate user, but under the same graphical environment. I have enabled X permissions by ...
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How to replace the hostname portion with xauth (OLD: How to redirect output of xauth command?)

I would like to generate a new Xauthority file using xauth with another hostname portion and write it to a different file name (as opposed to ~/.Xauthority where the xauth command typically writes to)....
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Is there a terminal emulator which remembers the output from its last run?

While modern desktop environments usually start all the applications which were open in the previous session and some terminal emulators may even open as many tabs as before, I've never seen a ...
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Strange X11 forwarding issue [closed]

I have a strange issue regarding ssh x11 forwarding. Assume I have an host named node71. Firstly, I start Cygwin/X and mintty in Windows, now the local DISPLAY=0.0 Next, I can do ssh root@node71 -Y, ...
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75 views

Launching X11 server as non-root user

I'm trying to launch an x11 session (or is it an xorg session? I'm not sure) from the command line: startx &. I get the following result: X: user not authorized to run the X server, aborting. I ...
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Text movement in Text fields

I moved to OS X several years ago, and have noticed that due to the way they set up keybindings, you get some niceties when it comes to navigating any text area (for example the URL field in your ...
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Cannot get the resolution I need when using DUMMY Xorg Driver

I am using Lubuntu 16.04. I am trying to set up a "headless" (i.e. no monitor plugged in) server but with a full GUI running that I can access via TeamViewer (I have reasons for this requirement, but ...
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115 views

Is there any common X11 program?

You can think of echo or cat as common terminal program. You can call blindly: echo "hello world" in bash for example and it will work. You will see the output. I am looking for something like ...
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xterm width and height with regard to number of pixels NOT number of characters

On X window system (TWM) of my Ubuntu 12.04, xterm has width of 484 pixel and height of 316 pixel, and its geometry is 80x24, based on xwininfo. On X window system (TWM) of my LFS 7.9, xterm has with ...
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LightDM starts two X servers instead of one

I work with Debian over BeagleBone Black. An engineer replaced the (hardware) board display, and now two X processes start instead of one. LightDM and X settings are default. They worked well before ...
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Lending my x window to another process

I am writing a terminal file manager, and I would want that when a user issues a command to open an image file, that the image viewing application use the terminal emulator's x window for rendering ...
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debian / screen freeze but system working

I've recently installed a dual-boot Debian Jessie / Win10 on a 64bit tower PC, and I'm having serious issues with Debian's install. Out of the blue the screen/mouse/keyboard freeze, while the system ...
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Prevent GIMP from raising & activating new windows/tabs

I'm using XSane to scan images in to GIMP 2.8.16. With the scan settings, this unfortunately takes a few minutes per scan. I'm using GIMP's tabbed window mode. It's nice that I can work on other ...
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29 views

How to forward ssh X11 from an ssh session to base computer?

I am working from out of town, so I need to connect my computer at campus. Normally, when I am around the campus I can just use my ip of lab computer to forward x11 like; ssh -X acc@lab-computer ~/...
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1answer
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Looking for a simple graphical notifier in KDE, invokable from bash

I am using Debian with KDE. There is a small bash script, that runs in the background. If it encounters a certain condition, I want my work on a full-screen IDE or completely unrelated console windows,...
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Why is VNC so extended instead of X11

If X11 provides functionality to use a graphical application remotely why is VNC used instead of the X11 server capabilities apart from overheading issues? Can you config your X11 client to connect ...
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What is X11 exactly?

I'm reading Wikipedia about X11 and it says that: In its standard distribution it is a complete, albeit simple, display and interface solution which delivers a standard toolkit and protocol stack ...
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X11 touch the value of the shivers . Is there any way?

I am using the X- widnwos. I use the touch screen. If you are a touch on the touch-screen cursor is unstable. Below is the video. https://youtu.be/jMub9-T_wEA How do I improve the following ...
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40 views

Securing X window displays

I want to install X on a system I'm in charge of. I plan on running it with local connections only, e.g. with startx -- -nolisten tcp (which I understand is the default these days). Some relatively ...
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Ubuntu .desktop file not working but command line launch works

Ubuntu 15.10 running in a VM. I have an application installed in /devel that I am able to run from the command line with the command: /devel/dbvis. This launches the GUI and works fine. I created a ...