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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.Xauthority file is empty

I have been trying to ssh -X to my cluster running OpenSUSE 11.2. It used to work well for me. But now I get this message: X11 connection rejected because of wrong authentication. Failed to open the ...
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X11 Path Issues and Confusion for Installed Packages

I am using GMT (generic mapping tools) and SAC (Seismic Analysis Code), and each use X11 (or XQuartz on 10.9.4 Mavericks) to display graphics. When I want to display postscript using ghostview, I get ...
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Chrome loses Compose sequences whose last character uses Shift

In Chrome 35.0.1916.153 or 36.0.1985.125, sometimes, my Compose key partially doesn't work. As far as I can tell, combinations whose last character uses the Shift key that don't work. For example, ...
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6 views

XFCE: image as whole applications menu button, not just icon

This is what I want for my applications menu, the whole thing, not just the icon that should sit behind the optional text: What I get when I change the icon is: But what I want is this (edited ...
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1answer
17 views

X11 Issues running with Terminal.app

I am trying to figure out why I can't use ghostscript or ghostview (or any other X11 applications) when I try to call them in the Terminal. I am using bash, and I also used Fink to get the packages I ...
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Using X11 Displays through Terminal.app commands : generic mapping tools

I am trying to figure out why I can't use ghostscript or ghostview (or any other X11 applications) when I try to call them in the Terminal. I am using bash, and I also used Fink to get the packages I ...
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16 views

xpra attach failure

After entering the command to attach to an xpra session: xpra attach ssh:SERVERNAME:100 we get this response: connection lost: empty marker in read queue Connection lost What does it mean? We ...
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1answer
37 views

LXDE: How to run a program/command when I press one or more keys?

I have a numpad on my keyboard and I want to make the keys do something when (the otherwise useless) ScrollLock is on under LXDE graphical environment. For example, I want to run my browser when I ...
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1answer
42 views

Mapping a key to AltGr with KDE On Ubuntu

Is there a way to Assign AltGr to the right Win key? I'm Using KDE Workspace in Ubuntu 14.04.
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40 views

Typing punctuation adds an accent to the preceding letter after my laptop is docked for a few minutes

I am running Manjaro XFCE. Everything worked like a charm for months now, but 2 weeks ago the keyboard configuration from my external keyboard seems damaged. Writing on my laptop itself works ...
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1answer
21 views

adjusting keyboard sensitivity with kbdrate

The keyboard on my Laptop is too sensitive (when typing, I often type two characters instead of one). I have been googling and found kbdrate. But for some reason, kbdrate does not work properly: # ...
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31 views

In tmux session, cannot connect to X server after ssh'ing

At work, I have a desktop with a monitor and a few running tmux sessions. At home, I frequently ssh into that desktop and enter my running tmux sessions. When I ssh from home, I do not want to use ...
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40 views

Spawn login prompt in an X terminal

I have a system that runs a bash script when it starts (I use /etc/init.d/rc.local to execute it without needing to log in). For reasons I won't go in to here, I need to launch a graphical terminal ...
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17 views

How do I track why X11 keyboard shortcuts don't work?

I am on Arch Linux. I am completely stuck trying to figure out why some of the key combinations work on regular DELL 101 key usb keyboard in X11, but not on the mechanical gaming one. I have 2 ...
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3answers
68 views

How to kill all open windows?

I want to close all windows appearing on my desktop. I've thought to do this through pkill, but I could only manage to kill them one at a time, which is not what I want. The end goal is to put this ...
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1answer
21 views

Transfer X from monitor to remote machine

I want to remote login to another laptop to continue working on session left over. VNC is slow because it's bandwith hog. I know (or I think I know) that it's not latency, it's bandwith because the ...
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1answer
20 views

Terminal emulator for Android that supports viewing images?

I am planning on logging into my unix desktop via an Anroid tablet. Is there a terminal emulator that will allow me to view images, such as making plots in ipython, via X11 protocol?
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1answer
29 views

Copy image from clipboard to file

Is it possible to take an image from the clipboard and output it to a file (using X)? I can do this with text easily: $ xclip -selection c -o > file.text But when I try the above with an image ...
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1answer
10 views

xkb - Keymaps at `/usr/share/X11/kbd/symbols` 2 values vs 4 values being specified

I am a noob when it comes to linux and xkb. Sorry if the question seems very obvious and stupid. I was checking the keymap found at /usr/share/x11/kbd/symbols and in particular, I was browsing the us ...
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1answer
34 views

Declare a new modifier key with XKB

I'm trying to create a one handed keyboard layout and want to use Hyper to produce special keys when I press some keys. For example, when I press Hyper_L and B, I want XKB to produce ...
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46 views

External VGA monitor port not working on HP Elitebook 2540p running RHEL 6.5

I'm running RHEL 6.5 on an HP EliteBook 2540p. When I connect the external VGA port to a projector or external monitor and press Fn+F3 to switch to the external port, nothing happens. Under System ...
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30 views

What is the difference between a windowing system and a window manager?

What is the difference between a windowing system (for example X11, Wayland) and a window manager (Awesome, Compiz, OpenBox)?
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92 views

Why X server runs on TTY1 and not TTY7 on Arch Linux?

I've used Debian derivates (*buntu, CrunchBang), Mandriva, OpenSuSE, Fedora, name it.. all of them had X server at TTY7 (at least I think it was 7), accessed with: Ctrl + Alt + F7 Now, I moved to ...
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42 views

Priority for “always on top” X windows

I have two windows on my Xfce desktop that need to be open all the time and they are set to always on top. They overlap each other, whenever I click on one of them, that's expected behaviour. Is ...
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2answers
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Stuck pixel on X

Every couple of days, a pixel roughly in the center of my screen gets stuck on white. It can be unstuck by restarting X, or by logging out and back in. However it remains stuck when I call xrefresh. ...
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45 views

Cannot open GUI's via SSH connection? [duplicate]

I've just connected to a Linux terminal using an ssh client. I'm running Linux on both desktops, but cannot open PDFs, IDE, or other graphics from the ssh client. How can I fix this?
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71 views

Error when running X11 application as root

I get this wierd error when I run applications as root. **(gedit:630): WARNING **: could not open X display No protocol specified Unable to init server (gedit:630): Gtk-WARNING **: Cannot open ...
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1answer
43 views

Displays and their relative position in a shell script

I want to get information about the displays, something like xrandr, but with more info. I want to know their position. So if I have two or more displays connected I want to know how they are ...
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3answers
95 views

How to open a PDF file using PuTTY as a terminal?

I connected to a Linux system using the putty SSH client on my Windows PC. Now it's unable to open a PDF document in putty. The error message: gnome-open .pdf (gnome-open:4137): GConf-WARNING **: ...
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89 views

Unable to get NVidia 9600GT working with Kubuntu 14.04

Problem: Nvidia drivers are not loading Hardware: Dell T110 Graphics Card root@madeye:~# lspci | grep VGA 02:00.0 VGA compatible controller: NVIDIA Corporation G96 [GeForce 9500 GT] (rev a1) ...
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1answer
65 views

Trying to get firefox running on CentOS 6 minimal iso - can't open display

I've got minimal CentOS 6 running on an Oracle VirtualBox on a Mac. I'm trying to get Firefox up and running so I can download some web files into the VM. I installed Firefox (yum --enablerepo=remi ...
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1answer
56 views

How can i start a wine application at startup without login?

I want to start a wine application when system startup. However this app need a Xwindow environment. I could only launch it manually by hand now, so I have to login first then start the app. I have ...
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1answer
56 views

What's the difference between Primary Selection and Clipboard Buffer?

I am tweaking in Webkit-browser land in Linux and I come accross the terms "Primary Selection" and "Clipboard selection or buffer" very often. I want to understand what are they and what ...
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27 views

Screencast on a virtual monitor

is it possible to create virtual monitor (virtual area) and cast it to LAN? I would like to have something like external monitor, like Miracast, but not mirror. I think it is possible to create ...
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39 views

x11 connection established but magic-cookie value different?

From my local machine I ssh to a remote server along with authentication regarding X display. I know that in this process, MIT-MAGIC-COOKIES are used and the value in both server and client needs to ...
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2answers
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why won't x11 display work through ssh login?

I have logged in to a remote server and am trying to display an x application(e.g. firefox). but an error message appears. the below are my attempts to open firefox Black@Black-PC ~ $ ssh -X ...
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1answer
25 views

how to 'forward' x display data?

this is my situation: there are three computers lab server (CentOS) lab personal computer(window s7) personal laptop(ubuntu) since the lab server only allowed ip address of my desktop at the lab, ...
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1answer
30 views

where can I find the MIT-MAGIC-COOKIE in the user side?

While digging into X Windows or X11 stuff I found that X display uses MIT-MAGIC-COOKIE to allow client-server to exchange display data. One thing I don't understand is that I am able to locate and ...
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Fedora19 — Mouse pointer suddenly disappears

I'm running a desktop machine with Fedora19, Gnome3, dual monitors (30" left, 27" right). Once in a while my mouse pointer disappears from the primary screen. If I move the mouse to the secondary ...
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100 views

GTK3+ and C++ on OSX - “No GSettings schemas are installed” error

I'm trying to run a C++ example with GTK3+ and GStreamer components on OSX. I can gcc compile the source with: gcc -o basic5 basic-tutorial-5.c 'pkg-config --libs --cflags gstreamer-1.0 ...
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1answer
137 views

Why All the text is invisible in Intellij? [duplicate]

I have installed manjaro and intellij. For a couple of month now I had no problems at all and I was fine with that. Since yesterday I experience a strange bug. The whole text is gone. What I tried ...
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39 views

Why Inotify is unable to add watch

I have been trying to install teamviewer on RHEL 6 machine. The installation went fine. When I try to run teamviewer, it terminates immediately after showing the GUI. I went to ...
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1answer
26 views

CentOS as an xterminal

I have recently built a new VM on my CentOS 6.5 system. The VM has Ubuntu with ROS, the robotic operating system on it. I just wanted to experiment with ROS and I've been running some of the ...
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1answer
30 views

What signal does X send to its clients when it receives SIGINT?

If I terminate the Xorg server with a SIGINT signal (eg. when I press Ctrl+C), what signal does it send to its clients?
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3answers
548 views

Can I “drag” a file into a window without a file manager?

(I'm on Arch Linux, using i3 as my wm and xterm as my terminal emulator, though I don't know if any of that is relevant.) Occasionally, a website asks me to drag a file with my mouse from my desktop ...
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2answers
420 views

Java doesn't show menu text

I startet netbeans/intelliJ/squirrelSQL after I didn't use it for a few days/weeks and now the menu doesn't show text. There are just the underlineds. My system: ArchLinux (everything up to date, ...
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Remapping Left Control <LCTL> in xkb changes behavior of Alt + Left Shift

For some reason pressing any alt key (including <MENU>) together with <LFSH> toggles "Switch windows of an application". This can be turned off by commenting out key <LCTL> { [ ...
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2answers
77 views

How to get mouse click position?

I know I can get the position of the mouse pointer by executing xdotool getmouselocation. What I need is program that will run and let me know the position where the mouse pointer clicks.
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166 views

GLX extension not working properly with xvfb

I have an Ubuntu 14.04 system with the following packages installed: libegl1-mesa:amd64 libegl1-mesa-drivers:amd64 libgl1-mesa-dri:amd64 libgl1-mesa-dri:i386 libgl1-mesa-glx:amd64 ...
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X11 connection rejected because of wrong authentication — on CentOS, for all users (including root)

I'm configuring a small computing cluster with CentOS. The last step is setting up X11 forwarding, and here I find problems that I cannot solve. On all compute nodes except one, I can set up ...