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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Make CapsLock switch between text input and navigation

I'd prefer CapsLock to switch between text and navigation modes rather than lowercase and uppercase modes, much like NumLock swaps numbers and navigation, on as low a level as possible. For example, ...
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803 views

xhost + is not working with Oracle installation

I am trying to install Oracle on Ubuntu 14.04. I have followed instructions and now I am trying to start the installation. However, I am facing problems. If I run ./runInstaller command with oracle ...
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38 views

How do I get a list of keys currently loaded with XKB?

I am writing an evdev-reliant daemon that needs to know the complete keyboard layout currently in use. Getting the properties of the current XKB layout is easy. You just use setxkbmap -query or ...
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80 views

Why is tmux opening a new terminal window?

When I start tmux in my i3 / termite / zsh environment the default pane with the zsh prompt inside it is launched in a seperate window instead of the window in which I started tmux. Additionally I ...
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137 views

CentOs 7 - MobaXterm - X11 Forwarding per user

I am using MobaXTerm to connect to my CentOs 7 Server. I have set X11Forwarding yes in my /etc/ssh/sshd_config file. The root user is able to start the X11-Gui for example gedit. The other users ...
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37 views

XGetImage from hidden screen

I'm using Xlib for my application and would like get image from root window I open separated Xserver in another tty (:1) then opened this diplay XGetDisplay(":1") I'm working in :0 display After ...
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1answer
1k views

X server only starts as root

I have an Arch Linux system, stock kernel and drivers. For some strange reason, xinit produces an error when it is started by a non-root user. The logs say this: (EE) parse_vt_settings: Cannot ...
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1answer
88 views

Emacs X11 Forwarding does not work but xclock does

I'm launching a X server with Xquartz (OSX 10.10.5) using Terminal.app, and I'm trying to connect to a EC2 instance with: ##local $ echo $DISPLAY /private/tmp/com.apple.launchd.MO57wSPup1/org....
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112 views

Can I scroll background window without giving it focus in i3wm

I have disabled accidental touchpad click to activate background windows. However, when I move two fingers or my palm along the touchpad, this generates wheel events and they activate whichever window ...
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40 views

Error with `ssh -Y`, error in locking authority file

I am using X11 over the secure shell with the "trusted forwarding" flag, i.e.using trusted forwarding with ssh -Y Today I have been receiving the following error: /usr/bin/xauth: error in locking ...
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2answers
424 views

X broken after upgrade to Fedora 23

I recently upgraded from Fedora 22 to 23 via the dnf plugin, and everything else works fine except for graphics. The fglrx module appears to load okay, but the X server crashes when it tries to open ...
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31 views

Why do GUI toolkits not support popular pixel densities? [closed]

Assuming some standard sized monitors with popular resolutions, there are some prominent pixel density categories. Historically 96 is the most common pixel density. With 4k you double up to about 180 ...
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1answer
47 views

kwin: key binding to move a client to a different desktop

How does one go about adding a Kwin shortcut that reassigns a client to a different desktop? KDE is set up for nine desktops with keyboard shortcuts for Kwin for navigating between them using META+{1....
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2k views

What desktop environment does startx run, and how can I change it?

From many docs, I read that startx is starting LXDE in Raspbian OS. I am a little bit confused. Will always startx run LXDE GUI? Also I have seen example with using startlxde command. How is that ...
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1answer
94 views

Is SteamOS frame-rate performance related to X11?

Ars recently tested SteamOS against Windows 10 and determined on average Windows 10 had a higher frame rate. Does this have anything to do with Linux's reliance on an archaic graphics system (X11)?
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173 views

How to test bandwidth and latency over ssh with X11?

I am working remotely on a machine using X11 trusted forwarding with 'ssh -Y`. How can I test the latency and bandwidth between me and the server?
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2answers
56 views

Disable touchpad while typing and also touchpad click for X session

I have done a lot of googling for disable touchpad click and disable touchpad while typing and found a lot of answers. However most of them are related to a desktop enviornment. I do not use a DE. So ...
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1answer
141 views

Network namespace, ssh, X11

I connect (via ssh -Y ...) from a machine (=client) to another machine (=server, actually in my LAN, but it is irrelevant); then I start a new network namespace (NNS, for short) on the server, I start ...
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1answer
38 views

Mouse unusable in Java programs under Gnome Shell

I am trying to use Oracle SQLDeveloper (sqldeveloper-4.1.2.20.64-no-jre.zip) under Gnome Shell (Fedora 23). The issue is that the mouse is completely unusable in that application. As-is, button ...
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68 views

Keep x11 GUI app forwarded over ssh alive after lost connection

I am forwarding gftp with putty from my Ubuntu server to my laptop. Is it possible to run the program in a way that will allow it to continue working on the server if my laptop looses connection? ...
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24 views

Always insert the diacritic after a dead key

A followup question on this subject, perhaps any of you can help with that too. In Windows the layout for US International does/did this for me; Typing I ' d yields I'd (with no extra jams on the ...
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1answer
236 views

ssh and sudo but no $DISPLAY

Usually I do this on ssh for getting a X application using sudo su ssh -X server OKI login xauth list $DISPLAY which returns to me server/unix:10 MIT-MAGIC-COOKIE-1 blablablablabla Then I ...
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1answer
158 views

Convert Xcursor to PNG

Xcursor is a format for the graphics of the cursor in X11 (file reports X11 cursor). xcursorgen allows you to convert PNG files and some metadata to Xcursor files. How do I convert an Xcursor file ...
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156 views

xrandr only lists mode after a while of waiting

I've installed arch linux a while ago on my laptop and everything worked fine. The issue I've been facing since two weeks or so (most certainly related to an update) occurs when login with external ...
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1answer
36 views

Some applications become garbled and unusable

Over the past couple of weeks, my Linux Mint 17.2 installation has been acting up. Some programs, such as TortoiseHg, kdiff3, k3b, and some parts of Skype, become graphically corrupted and unusable. I'...
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47 views

Disable and enable reading from touch-screen's serial port

I have X server configured to work with a touch screen through the egalax driver and a serial port. [xorg.conf] Section "InputDevice" Identifier "EETI" Driver "egalax" Option "Device" "/...
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23 views

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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49 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 ...
3
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1answer
122 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
91 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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1answer
291 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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1answer
49 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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1answer
30 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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1answer
261 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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69 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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75 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. http://www.listary.com/text-editor-...
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1answer
82 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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1answer
426 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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103 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 ...
0
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1answer
283 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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143 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
104 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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56 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
214 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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26 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
52 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
54 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
41 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
200 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 '...