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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Disable the number pad on my laptop [duplicate]

I want to disable the number pad on my computer altogether. Pressing the number pad keys should do nothing, neither insert digits/symbols nor move the cursor. (Why? Because my dog keeps pressing them, ...
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46 views

Dealing with broken pipes in ssh X11 forwarding with an intensive numerical simulation

I have a hydrodynamic code I inherited that has a java gui. It is quite user friendly but it is a nightmare to run through ssh because when I do X11 forwarding, if the connection experiences problems ...
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101 views

Bind alt but not altgr in i3

I use Mod4 for most keybindings in i3, but I use Mod1 for this: bindsym Mod1+a workspace a bindsym Mod1+b workspace b bindsym Mod1+c workspace c bindsym Mod1+d workspace d ... However this binds ...
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2answers
78 views

Running more than one console X session with startx at the same time

I have xfce running in display 0 (accessible via Ctrl + Alt + F1). I press Ctrl + Alt + F2 and type startx (attempting to run more than one window manager at the same time) and receive the error ...
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237 views

“X11 forwarding request failed” when connecting to github.com

I'm getting a bizarre error message while using git: $ git clone git@github.com:Itseez/opencv.git Cloning into 'opencv' Warning: Permanently added the RSA host key for IP address '192.30.252.128' to ...
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48 views

Why isn't X treating ALT_L and ALT_R differently w/r/t Mod1

I have changed the definition of Mod1 via xmodmap to not include ALT_R (to understand why scroll to the bottom). The current layout of the modifiers is below. Despite ALT_R not participating in the ...
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27 views

X Window Over network

What makes X Window or X11 protocol use a lot of bandwidth when used over a network (LTSP, etc.)? I've tried to read some docs but I can't find the answer
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259 views

Is it possible for a sysadmin to eavesdrop a user's screen/graphics?

I am interested in several things: - is it possible? - how to do it? - is there a way for a sysadmin to configure the machine so that it will beep or send an e-mail to the user so that he is aware ...
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63 views

Xpra server error (error accepting new connection)

I'm having trouble connecting to my xpra server. I've installed Xpra version v0.14.10, on my raspberry pi 2 which running on Raspbian Jessie Distro. I connect to my RPi through putty with X11 ...
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72 views

How to Edit Text Anywhere with Your Favorite Editor in Linux?

Editors like emacs or vim has efficient keybindings. How do I edit every text editing field of all applications which them? There is one for windows already. ...
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1answer
69 views

No window title bar when X Toolkit “-title” argument ends in “lock”

I'm seeing an odd X behavior, and am trying to determine whether it's originating in the X Toolkit or in my window manager (fvwm). I also can't tell whether it's a bug, or inexplicably intended ...
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357 views

Possible to move a window from one X screen to another on same host?

I'm running XFCE 4.12 with 3 monitors setup into two X screens and two video cards on the same computer. Two of the monitors form a single X screen using nvidia twinview functionality, which is ...
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92 views

X11 - multiple monitors visible as one monitor

I have three monitors which are configured in xorg.conf this way: Option "metamodes" "DFP-4: 1920x1080+0+0, DFP-5: 1920x1080+0+1080, DFP-6: 1920x1080+0+2160" Is it possible to set two or even three ...
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1answer
248 views

Graphical application, kiosk mode: fullscreen?

I installed a debian system which automatically starts a graphical application (clementine) when logging in as a certain user. The command run at login is /usr/bin/startx /usr/bin/clementine, which ...
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119 views

Keyboard shortcut to switch focus without raising window

So right now I have 'focus follows mouse' enabled, and windows don't automatically raise on focus, which means I can have a window in focus that is partially behind another window. Now, when I use ...
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1answer
99 views

Trying to run program that requires X11 server on headless Raspbian install

I'm trying to run a program in mono that requires a graphical server. The Raspberry Pi it will run on is headless. When I log in with X forwarding enabled from my local computer, I can run the ...
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54 views

Can a Window Manager simulate virtual screen size?

Following these instructions, I now have a Raspberry Pi connected to an Adafruit 3.5" TFT display. The display has a fixed resolution of 480x320, which presents problems when viewing some fixed-sized ...
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1answer
186 views

Is there a downside to enabling X11 forwarding in ssh?

For some remote work, I sometimes use X11 forwarding on ssh connections, but usually don't. But, instead remebering to use the -X flag on my ssh connection, I can also set ForwardX11 yes to enable it ...
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24 views

Where are minimized windows in naked Xvnc4? How to restore minimized windows?

I am running VNC server as described here: No windows frames on VNC screen I am running only few applications, so I have empty desktop and terminal in the beginning. If I run some application, like ...
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1answer
50 views

Gracefully Handle Losing Connection Exported X Display

I am exporting a several GUIs across a network using X11, I start the GUIs by SSHing into the server with the -X option and running the executable. If the remote machine is abruptly shutdown or the ...
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1answer
51 views

How to get out of TTY and into X session [closed]

I have a computer with Linux installed in it and when I log in there is only what seems to be code. I had it working normal before, there were icons on the desktop and such, just like a windows ...
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1answer
39 views

How to trace what's getting run during a login to an X11 session?

I'm trying to debug the fact that my .xinitrc file is not being run, but whenever I need to debug anything having to do with X11 startup I feel it's like "going down the rabbit hole": what's the ...
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1answer
178 views

Bigger X11 Cursors suitable for 4k screens

The default X11 cursors are quite tiny when the display is a 4k screen. How can I use bigger cursors? Requirements: Must work under plain X11 (no KDE, Gnome or similar bloat) Should have at least a ...
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19 views

Windows->RHEL->RHEL X11 Forwarding?

I know this question might have been asked a lot but couldn't find anything that worked. From a windows machine 'A' I can only SSH into Linux server 'B' from where I can SSH into another Linux server ...
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1answer
103 views

No windows frames on VNC screen

I am trying to configure good virtual desktop on my headless headless Ubuntu 14.04 server. Unfortunately, I see the following picture when open remote screen: I.e. windows have no frames and ...
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117 views

how to bind commands like “Ctrl+C” to one-key (for example “F5”)?

I use some commands very frequently. Some of them are several keys combinations. And my fingers are not quite satisfied with them. So it looks usable for me to bind them to one-key commands. For ...
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35 views

output cut on the projector because laptop resolution is 16:9 and projector is lower

My query is same/similar to Setting KDE to crop the laptop's screen to match external VGA device's ratio In my case my screen resolution is 1366 x 768 which is non-standard but still ...
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15 views

Editing missing characters in some charmap/keyboard

I use the abnt2 layout on my american keyboard, but the backslash key \ is missing. How can I remap some glyph to an unused key or combination (eg. CtrlAltE or AltGrE)? I knows only that ...
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1answer
41 views

Autostart under random WM?

I'm a long-time DE user, however there are some circumstances under which I prefer to use different tiling-based WMs instead of GNOME or KDE (I use GNOME mostly for last year or so). I have a ...
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169 views

Disabling PRIMARY or cut buffer “copy on select”

I've been fairly happily using Ctrl-C/Ctrl-V, with the occasional Ctrl-Ins/Shift-Ins here and there on Linux for quite some time, but I've recently switched over to urxvt and am finding the clipboard ...
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2answers
60 views

Making an Extra Copy and Paste Script

How can I make a script which duplicates Ctrl + C and Ctrl + V (aside from the actual keybinding part, which I know already I can use xbindkeys for)? So, for example, how could I make bash functions ...
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1answer
74 views

System creates extra shift/alt/control keypresses

OK, so this is strange. I recently bought a HP Pavilion ab153nr laptop and installed UbuntuMate 15.10 on it. While setting everything up, I noticed that the screensaver would occasionally stop ...
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1answer
538 views

root needed to launch X11 application

I'm building a Qt application using QML technologie. QML use OpenGL. The computer running the build is a CentOS 6.7, with intel GPU. I'm using it only on SSH, and I use XMing (or VcxSrv sometimes) ...
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1answer
169 views

Remap right click button

I have a mouse with a unusual mapping. I wish to change the right click button from B3 to B2, so far I'm using xbindkeys and I've managed to remap the back and forward buttons, but no luck with right ...
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1answer
211 views

How to make openbox display window in certain area only

I have a display with a native resolution of 1024X600. I set it to 1024X724, because some window can't be display in the native resolution. I have to use the mouse to do the panning. But for the ...
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1answer
67 views

Easy way of mapping Ctrl+Shift+Alt+J to Down

I have an IDE called Intellij that I'm using on Linux to code Java applications with. I have the editor mapped to VIM keys, using the IdeaVim plugin. What I don't like is when I get a popup dialog ...
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3answers
83 views

Processes group (session) of GUI processes

According to what I know, the shell and its child processes are in the same session which have the same (controlling) terminal. I read that they are interactive processes because they have the same ...
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66 views

RedHat5 stop copy on select

At work do we use RHEL5, with Gnome 2.28.2, we are also required to do development work in RHEL5. RHEL5 have this strange feature that it will replace the clipboard with anything i highlight. This is ...
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1answer
65 views

How do end-user processes, desktop environment and windows manager communicate with each other?

In Linux, each process communicates with each other through kernel. As far as I know, X11 is a server which means it is a process. I read somewhere (cannot remember the source, will provide later) ...
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60 views

Can't change mouse speed in fedora

I have cinnamon installed in fedora. I also have GNOME desktop. I switched to GNOME and all of a sudden my mouse got a lot faster. I then went back into cinnamon and went to the control panel to ...
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45 views

How can X11 shortkeys be captured by a Python program?

I want to have a little Python program running in the background that monitors for certain shortkey presses (e.g. Ctrl Alt direction key). The idea is that these shortkeys can trigger various actions. ...
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1answer
78 views

X11 Forwarding Issues - Wrong Authentication

I am trying to configure X11 forwarding through SSH on my home server. The server is running Debian Jessie (hostname moonraker) in a headless configuration. My client is running OS X 10.10. I have ...
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35 views

Launching GUI on OS X (MBA) from a remote Linux machine?

My problem is quite similar to the one discussed here. But trying the same thing is not fixing it. I have XQuartz installed on my MBA. When I ssh -X username@server.remote.intranet to a remote server ...
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15 views

Get correct DISPLAY id per user [duplicate]

How can a user script launched from a system daemon with sudo -u obtain a proper value of DISPLAY so that it can display things on an X session of the user it's running as, preferably the DISPLAY id ...
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28 views

How to stop programs from opening on secondary monitor by default?

I have two monitors -- one DVI and one HDMI -- connected through a GTX 970. Some programs, windows, and games will open by default on my secondary DVI monitor unless I click or otherwise have a window ...
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1answer
73 views

How can I startx and have it run a script remotely via SSH?

I have the following script, which starts X and launches a graphical program: #!/bin/sh #startGraphics.sh #Starts X and runs the graphics program xinit /opt/common/graphics/bin/launchGraphics.sh ...
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2answers
3k views

Starting X applications from the terminal and the warnings that follow

I am trying to get to grips with using the terminal for most of my computing activities. One thing that has been bothering me for a while is launching X applications from the terminal. It seems like ...
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3answers
62 views

Open new graphic terminal via ssh

I would like to log in from machine A to machine B -- and regardless or whether anyone is logged in on B* open a new graphical terminal on :1**. To further clarify: This is a lab situation with one ...
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2answers
565 views

cluster-ssh: specify terminal font

In my cssh config file, I have: terminal_font=6x13 this default font is too small for me. man cssh says, I can specify other font size with the -f argument, while using "standard X font ...
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42 views

How to steal keystrokes instead of just monitoring them?

I am writing a program that allows controlling the mouse through keyboard. The user is supposed to assign a hotkey to start the program, which runs in the background without GUI or CLI. The keyboard ...