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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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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195 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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15 views

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
25 views

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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467 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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110 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 ...
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115 views

Run X11 only apps with custom font size and font style

How to run a X11 only app with user defined font size and font style ? Is it possible to run different X11 apps with different font size and style ? e.g. Run xclipboard with font FreeSans 14px and ...
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Examine application crash

Today I wanted to try out Visual Studio Code on my Gentoo machine. So I downloaded the x64 distribution zip file and started the application when suddenly X11 crashed and restarted. Unfortunately I ...
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17 views

Remove the hostname in the title bar when running a GUI over X

From a RHEL machine, I'm connecting to another using the following: ssh -X user@remotemachine I then run a GUI application. In the title bar of each window, the hostname is displayed. eg. ...
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Vim losing ability to copy to client clipoard over SSH

I have setup vim to be able to yank text from the server instance of vim to the clipboard on My client's operating system (through the SSH connection). The basic setup is Client side gnome-...
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103 views

How do I find out the window name of fullscreen internet content (eg Flash)?

--- The context --- I'm using Openbox to create a dedicated workspace/desktop for my browser -- the browser only opens on that workspace, and any other windows created on it get kicked onto a ...
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46 views

How do I prevent applications from starting with their windows maximized?

Some applications seem to be written the way they start maximized by default. I don't want this to happen ever. Is there a way to force disable this? There is a program called maximus that maximizes (...
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1answer
60 views

qt4 applications don't work in Xephyr

I am using Xephyr to run applications as another user, while being logged in as primary user. Most applications work fine in Xephyr, except qt4 based. Specifically: electrum ipython qtconsole ...
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47 views

multiple monitor setting - show only active monitor [closed]

I am using dual monitor along with my laptop. (laptop screen and another monitor attached to VGA port). Now, I have configured like secondary display(extended). Sometimes, I ended up closing active ...
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1answer
21 views

Change which key is primary and which secondary (need to hold Shift to access)

So I have a standard American (English) QWERTY keyboard and was wondering if there was a way I could have some keys act as if I were holding the shift key on them. The main keys I would like to do ...
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26 views

How to remap “dead_hook” in Emacs and Vim?

I would like to remap some common symbols like ( and ) to the base line of my keyboard combining Alt Gr with other keys like j or k. I can remap Alt Gr+k to ) because that combination prints ĸ. The ...
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3answers
777 views

Is it possible that X11 can be forwarded through a SSH tunnel

I communicate with the server via a ssh tunnel, configured via Putty. Recently, I'm trying to forward the X11 through it, but it doesn't work. Is there any one work this way? Searched with google,...
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58 views

launch virtual machine on remote computer with X forwarding

Is it possible to launch a virtual machine (using Virtual Box) on a remote machine and just forward the screen using X11 tunneling? I tried this from my remote host: $ssh user@myhost -X virtualbox ...
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How do I emulate a virtual keyboard with an arbitrary character set?

I am writing a couple applications that change how your keyboard works. (One that allows key-chording, and another that allows you to say syllables out loud to type individual characters.) The "...
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1answer
50 views

How to list all currently available compose key combinations?

Is there some way to inspect the state of X to get exactly and only a list of compose key shortcuts and what they map to, either as literal keys, for example: aa å 88 ∞ or as glyph names, for ...
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3answers
300 views

How to create lowercase pi (“π”) with compose key?

I'm pretty sure I used to be able to create lowercase pi characters using Composepi (as described on for example fsymbols.com), but it no longer works. My compose key works for other characters (like ...
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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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1answer
1k 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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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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87 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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158 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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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
93 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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119 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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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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439 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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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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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
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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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194 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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59 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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151 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
43 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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1answer
81 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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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
328 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 ...
4
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1answer
179 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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163 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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37 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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50 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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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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57 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 ...