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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Cannot login on GUI

I'm using debian Jessie with xfce and cannot login into the gui as normal user, root works. I can login on another terminal. I tried to reinstall lightdm, but I still cannot login. After a login ...
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How can I move framebuffer or X screen relative position?

A long time ago in a galaxy far, far away I had fixed boot screen using this nice solution. Since that time I have been looking for the way to move framebuffer in virtual console slightly to the right ...
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67 views

How can I get xrandr to detect both nvidia cards: 2 x GTX480, triple-head?

I am running Linux Mint 16 (Petra) I am running the default driver nvidia-319 shipped with the distro I have 2x GTX480 cards I have 3 monitors Using the Nvidia driver, all monitors and GPUs are ...
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19 views

Blurry image between Radeon / DVI-to-HDMI / LG LCD monitor

I've got an ATI Radeon (not sure exact card; forgot to write it down when I left this morning; will update when I get back) and it is connected to an LG IPS237L 23" IPS LED monitor. As you can seen ...
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1answer
15 views

No xauth data; using fake authentication. Unable to display remote windows

Whenever I try to ssh -X or -Y into a remote Linux server from my Mac (OSX Mavericks) machine, I get the same message: "Warning: No xauth data; using fake authentication data for X11 ...
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Disabling an Xorg server's extension at runtime (for new clients)?

I have an old Xorg server whose "Render" extension seems to be buggy (if enabled, most of the fonts are invisible, unless hovering over them -- after upgrading the packages with X clients and ...
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2answers
61 views

How to take a screenshot of an totally obscured window

I have a game running in the background, but I would like to take screenshots of the window which is not visible. Seems like all the screenshot utilities for X11 need the window to be visible. Is ...
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2answers
68 views

Killing X-related processes when CrashPlan is running

I am currently running Ubuntu Server 12.04, but this applies to all flavours of Linux really. This server does a bunch of things and is controlled remotely via ssh. Some time ago I have installed ...
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1answer
23 views

Forcing compton to free directory

I often have trouble unnounting filesystems because compton is keeping a subdirectory open. Here is one line from lsof I have right now: compton 30043 valmi cwd DIR ...
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1answer
37 views

Cron task in graphic interface

I need to open one (or more) browser tab periodically and I decided to use cron. The command in the shell (bash) that correctly executes this task is chromium-browser http://mysite.com. If I type it, ...
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1answer
27 views

Running multiple xserver displays “offscreen” or “headless”

I would like to run two or more displays, while I only have one GPU and one monitor. The second display does not have to display anything on the monitor, a dummy output would be ideal. I use startx ...
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1answer
18 views

Structure of graphical modules in Linux Lubuntu

I am trying to understand the layers of the Linux GUI system. I am running a netbook with Lubuntu, and I was told it's running LXDE as desktop environment. However, there are processes with 'gnome'. ...
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31 views

Creating a complete Wine headless setup

I've have a headless server with X11 Forwarding but a lot of Wine applications fail to start with the following error: Application tried to create a window, but no driver could be loaded. It has to ...
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18 views

Warning: Group GNOME Desktop Environment does not exist

I am still having problems connecting to X server on CentOS 6.5 My mac has it (X server) installed by default and opens no problem and if I command startx it looks for connections but my remote linux ...
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26 views

How can I set repeat rate of USB keyboard with udev?

How can I get my keyboard repeat rate to apply to a hotplugged USB keyboard? I made a udev rule to set the keyboard repeat delay and rate, /etc/udev/rules.d/99-usb-keyboard.rules with the following ...
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1answer
99 views

xterm no longer starting as root user on RHEL6

I am totally stuck even after reading both this and this (if it isn't already obvious I don't have much experience with Linux.) I am trying to install WebSphere 8.5 on RHEL6. Everything was going ...
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17 views

Can I make a second mouse/keyboard (virtual) for xdotool to use?

I have a script running a set of xdotool commands. It only uses half of my screen but I cannot use my keyboard or mouse while it is running due to the number of clicks and typing that is executed. Is ...
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1answer
29 views

WDM: autologin after boot

I am using Debian Wheezy with wdm and LXDE. I would like to have my user to be logged into LXDE automatically after computer start. I know this is possible with other display managers, such as gdm. ...
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Compose key works on console/TTY, but not in X session

My compose key does not work in my X session anymore if I change a certain line in my /etc/default/keyboard that (if I am not mistaken) should only affect the keymap of the TTY. I'll try to elaborate ...
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2answers
49 views

English Fonts with Persian Glyph

I'm trying to solve this problem for sometime. In the title bar of my web browsers and places like that; If there is a Farsi (Persian) string, it is shown like **** or something similar. I searched ...
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1answer
36 views

Keeping copies of the X log file on Debian

I recently tried to replace my Nvidia driver with the Nouveau driver for my Nvidia card, (see Switching from Nvidia proprietary driver to Nouveau driver for Nvidia card on Debian wheezy). ...
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4answers
56 views

Gallery of installed fonts

I want to view the fonts that are installed on my system. Specifically, I want the client-side (fontconfig) fonts, not the old-style X11 bitmap fonts. I guess what I'm looking for would be called a ...
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1answer
17 views

How to compile xbindkeys

I cloned the git repository of xbindkeys using: git clone git://git.sv.gnu.org/xbindkeys.git I want to compile it. How can I do this? Where can I find the compile instructions? What are the ...
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1answer
25 views

How to move a window from one Window Manager to another running WM? [duplicate]

I use libreoffice on my X11-server and then I want to continue to work on the same text in the same window from another place using VNC. So, it would be nice if it is possible to detach a X11-window ...
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1answer
33 views

make terminal real transparent

I want to make terminal transparent.To do this I have to select option Transparent background and move the slider under Background tab from the menu - Edit -> Profile Preferences. It becomes ...
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How do I configure lynx to pass images to xloadimage, xv or zvg?

I know that it's possible to configure lynx to pass images (PNG/GIF/JPEG/JPG) to xloadimage, xv or zvg and I've looked online (Description of lynx configuration; Use lynx with browser image support ; ...
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2answers
181 views

NVIDIA driver upgrade failed

I downloaded the latest(331.49), tried to install, but failed. I compiled the kernel module and at the end of the installation it said that it went successful. But on bootup it said: version mismatch, ...
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1answer
58 views

Mod, Meta, Super … keys?

In Window Managers circle there are some technical terms; couple of them are Mod keys and Meta keys. The questions here I am asking are What exactly are those and are they universal across ...
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2answers
37 views

fake monitor in a headless device

I have a raspberry running headless (no monitor nor TV) I have some programs that need X11 environment to start (but for nothing more) like for instance a midi sampler. I tried forwarding the X11 via ...
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3answers
308 views

How can I disable selection highlight auto-copying?

I've finally found myself at home in Linux, but there is still one thing that has bothered me since the start, and I have not found a realistic solution: How do I disable the automatic copying of ...
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1answer
38 views

How to pop up “hidden” X application

This is on a RHEL6 system using GNOME (but it happens on Debian as well). I use an application called xchat and if you hide it using the icon in the notification area (as opposed to minimizing using ...
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286 views

ElementaryOS / Specific layout

For switching layouts between three different languages I use Ctrl+Shift but this approach very slowly. I want to use specific combination for the specific layout. Like: English -> Ctrl+Shift+1 ...
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2answers
56 views

what is the difference between X11 and Xlib?

I am not sure if I have got it right. Xlib is a library to interact with X server. X11 is just another name for X server. Is X server just a single library? if so, why we can't access it directly? ...
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115 views

Why can't I run GUI apps from 'root': “No protocol specified”?

I installed debian onto my machine last night. Now, I don't understand why I can't run GUI apps from a terminal when running as root. For example: sudo -i glxgears Generates the following output: ...
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List/query Open X11 Display Connections?

I am hitting this bug: NEWT errors when closing sketch on Linux · Issue #1651 · processing/processing · GitHub, when using Processing on Linux (Ubuntu 11.04); my messages are: X11Util.Display: ...
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1answer
28 views

How can I get `cacafire` to show up in the original gnome-terminal, instead of a separate window?

If I am in a Linux virtual terminal (pressing Control-Alt-F1 on Ubuntu), and I use the command cacafire, I get the flames inside the actual terminal. However, if I am in the gnome environment, and I ...
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xinitrc: starting xterm with tmux causes all windows to share same geometry

I have xterm with tmux open upon startup of X11 with the following line in my xinitrc file: xterm -e tmux & However the -e tmux causes all windows to assume the geometry of the first -geometry ...
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38 views

How to bind super key to Ctrl+Shift using xmodmap?

I have read the xmodmap documentation. I could only find information on how to bind one key to another. How do I bind one modifier key to a combination of other modifier keys? Can I do this using ...
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1answer
21 views

Keypad plus and minus names in ~/.XCompose

I use XIM under Debian Linux with Gnome 2. Many compose sequences are already defined in the system, including the one for ± sign: palec@Palec:~$ grep PLUS-MINUS ...
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1answer
39 views

FVWM HowTo Swallow?

How could I swallow things like xclock, tray and other stuff to FvwmButtons? Is FvwmButtons the only option to swallow this type of things? How to swallow FvwmWinList to FvwmButtons?
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1answer
59 views

Directx application using wine over ssh -x

I'm trying to run a Windows app (Artemis video game - server mode) on my archlinux server. As it is an windows application I have to run it using Wine. As I'd like to be able to launch the server ...
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36 views

How to remove “dead window parts” after GUI errors?

I have experienced this problem with Chrome only (but for quite a while now, different versions) but the question is not about Chrome but about X (I guess). Sometimes (I am not aware of any pattern) ...
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1answer
75 views

FVWM 's Windows buttons (Maximize Minimize …), Themes

I'm using the F Virtual Window Manager (FVWM). I'm wondering how to customize the window appearance (the theme) to Add a minimize, maximize, and close button, so I have four buttons, arranged like ...
5
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1answer
83 views

Cannot start xterm over ssh after several successes

I am running some MATLAB scripts on the command-line of a remote computer using ssh. These scripts launch 5 xterms that are forwarded to me via ssh (using the -X option). At the moment I am debugging ...
3
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1answer
89 views

How to get the list of all active X sessions and owners of them

I'm implementing USB plug/unplug notification (here's related question), and I need to execute something like notify-send "device plugged" "My Device Title". The problem is that to make this command ...
15
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1answer
166 views

How do keyboard input and text output work?

Suppose I press the A key in a text editor and this inserts the character a in the document and displays it on the screen. I know the editor application isn't directly communicating with the hardware ...
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1answer
108 views

VMD X11 session over ssh

I have a remote compute server on which I would like to run VMD. Every time I start the application, it crashes with the following error report: Info) VMD for LINUXAMD64, version 1.9.1 (February 1, ...
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2answers
27 views

Adding script to autostart

I have this script: #! /bin/bash xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync xrandr --addmode DVI-I-1 1920x1080_60.00 xrandr --output DVI-I-1 ...
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30 views

With XenServer, how can I give a PV guest a display?

I have Xen running through XenServer 6.2. I created a PV Debian 7 guest using the built-in template, and chose to install the Gnome desktop environment. However, the guest only has a text console by ...
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1answer
39 views

Multiple GUI windows in one (GUI applications windows multiplexer/wrapper)

I was wandering if there are some programs or methods, where I can do something similar like Terminal multiplexer - Wikipedia, the free encyclopedia - except where each region of the "multiplexer" ...