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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How to execute applications in existing X window from virtual console?

I run Debian Wheezy and have Xfce as my X-Window Manager on virtual console 7, which starts up automatically. Once I've logged on and I'm using the xfce interface, is it possible for me to press ...
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109 views

Adding custom Compose key sequences

How can one add custom Compose-key sequences? I have googled quite a bit, but could not find an explanation. In particular, I would like to have: <Compose> + <Z> + <Z> = ℤ # ...
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68 views

How to maximize a window programmably in X Window?

I'm wondering if there is any commands or programs to make some window maximized in X Window? For example, what I imagine is something like this xmaximize -window *window_id*
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2answers
261 views

How to set a custom keymap and make sure, that it is not overwritten by system?

I use custom keymap, that diffentiates between left and right Ctrl: remove control = Control_R clear mod3 add Mod3 = Control_R When I load it with xmodmap myxmap, it works only as long, as one of ...
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1answer
157 views

Invoking PolicyKit/polkit via xinit/startx?

I recently upgraded a minimal installation of Ubuntu (with no full-fledged DE) from precise to saucy and since doing so I'm no longer able to mount removable drives as a normal user. I googled a bit ...
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365 views

remove title bar of another program

I have developed a program with glut library and want to remove its title bar. Since its impossible to remove the title bar from glut library I have to use an external tool to remove its title bar. ...
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1answer
333 views

How do I make themes apply to windows as well as system elements?

I am using Linux Mint with Cinnamon. Whenever I install a theme, it changes the 'system' elements, like the menu and taskbar, but not the window borders or buttons or the like. I went on the 'Other ...
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351 views

Finding error log related to specific crash in Ubuntu

Every time I try to start a specific program (Mathematica), my Ubuntu session crashes and I get thrown back to login screen. I want to find out 1) what is it exactly that crashes (probably X) and 2) ...
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85 views

Connecting to multiple XServers

I've got a simple xserver setup: Ubuntu workstation running xserver, to which a remote Beaglebone computer running linuxcnc is connecting. So I'm using the mouse, keyboard and screen of the ...
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1answer
60 views

How do I monitor display :1 while I'm using display :0?

I am running X on two displays. :0 is my primary display but I also have some programs running on :1. Is there any GUI application that will let me monitor display :1 in a window that sits on display ...
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124 views

Configuring Caps Lock as modifier and layout switcher

I want to set the caps lock key working as a modifier (modkey) and layout switcher at the same time. I want Caps Lock to act as a modkey in awesome in different hotkey combinations, for example, ...
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1answer
383 views

How to run startx as non-root?

Recently, I switched from Ubuntu to Arch Linux. I've installed X11 as my Window System and KDE as my Desktop Environment. I've separate partition for /home, /var, / and /boot and they all mount at ...
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1k views

Make mouse movements scroll when the middle button is held down

In Windows, I'm used to clicking the center button and it offering a "fast scroll" option up or down. How can I get this behavior on Linux? It currently seems to use the back button upon center click ...
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1answer
59 views

Is it possible for a program to have its dedicated X display?

Can a program have its own dedicated X display, as though it can start the X display, set the screen size to match its own size and ensure that no other program can use that X display? Some VNC ...
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218 views

Is it possible to choose which X display a program instance should run on?

If there are multiple X Windows running on a system, is it possible get a program to run on a particular window? How would you identify the Window and get the program to run there? I'm assuming that ...
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1answer
165 views

xautolock: how to auto-unlock on user activity?

I need to run a script after a period of user inactivity. For that I use the wonderful program xautolock. Now, I also need to run another script when the activity is resumed (e.g. mouse is moved or a ...
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1answer
44 views

Text Data from X Client for usage in android app

Is it possible to write a program such that it can capture the data from an X Client to X server and extract only the Text data inside it? I have to port a legacy application to android and the ...
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1answer
405 views

Certain fonts missing from xlsfonts in Centos 6.4

I have a certain software on CentOS 6.4 that gave the following error: X Error of failed request: BadName (named color or font does not exist) Major opcode of failed request: 45 (X_OpenFont) ...
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1answer
300 views

How can I set up multiseat/separate X sessions with gnome 3? [duplicate]

With classic Gnome, if one had two monitors, one could set up "separate X sessions" for each monitor. In this configuration, each monitor had a separate user login session and application windows ...
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2answers
158 views

How to make /etc/init.d script act like it's launched under X?

I'm trying to track down some quirkiness with a Java application that misbehaves when launched via a startup script in /etc/init.d , but runs fine when you open a GUI terminal window and run it ...
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148 views

IBM AIX: How do I set up SSH X forwarding on an unprivileged user with no home?

Long story short: I have an AIX server where my user is unprivileged and has no home directory, and it is not easy to fix this because OS-level management of this server is outside of my jurisdiction. ...
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1answer
177 views

change fonts of applications in dwm

I'm currently using dwm 6.0 and I was wondering how I could change the font of programs like Firefox. I already changed the font given in the config.h and recompiled it but it didn't change anything. ...
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1answer
239 views

Open 2 instances of the same program

I have a SSH server running in my home computer, with X11Forwarding enabled. I would like to connect to my computer from another computer and run some graphical programs. The problem is, that if a ...
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1answer
56 views

Specify rows/columns of a fullscreen X terminal?

For presentations it would be convenient to have a X terminal which supports following workflow: make it fullscreen specify how many columns/rows should be displayed -> the terminal then ...
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102 views

Xorg Setting checking from Command Line

How do I determined, whether Xorg is using Xinerama, DDC and Reduced Blanking ?? Just adding few options in Xorg.conf is sufficient ? If I have to check from command-line, then how can I check ...
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X11 fonts have gone - applications fall back to typewriter

After removing several packages, updating within Debian/Jessie, and rebooting, several applications (windows manager, Xfce4 panel, mail client, browser) fall back to typewriter; Sans/Regular seems to ...
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608 views

Linux Mint Kde boots to Xsession fail

I've been trying to figure out this error I have. Its a fresh install of linux mint 15 kde. During the process of installing graphics drivers, steam, and a few other things I get this error at some ...
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223 views

How can I configure xlock to find fonts?

Is it possible to make xlock to find fonts on my computer automatically? Namely, when I start xlock, it says xlock: can not find font: -*-helvetica-medium-r-*-*-24-*-*-*-*-*-*, using fixed... In my ...
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1answer
367 views

Is there a command such as xwininfo, xdpyinfo, xprop, or xlsclient that will tell me what font an X client window is using?

I'm trying to find a command that will report what font a given X window is configured to use. Does such a command exist? Looking through these tools I did not see an option that would give me this: ...
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1k views

How can I find the default (font) resource XTerm is using?

If I launch xterm with its default bitmap fonts and then select the 'Large' font from the 'VT Fonts' menu (via ctrl+right mouse), I get a very usable bitmap font with apparently good Japanese ...
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2answers
338 views

Viewing a part of the screen in a window on Linux

I plan to make a presentation with a live demo using my wide screen Ubuntu 12.10 Laptop and a projector. My plan is to connect the projector as a second (small) display and put my slides and live-demo ...
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3answers
285 views

Need small distro without a desktop or windows manager, just to run a single graphical app [duplicate]

I am looking for some help on this from a linux expert. I am very novice when it comes to linux so I am hoping someone can help out. I need a small distro, that is stable. I don't need a full X ...
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1answer
42 views

Install specific version of X11 for xmonad?

I wanted to compile xmonad from source, so I checked out the code and ran the first command from the README. $ runhaskell Setup.lhs configure --user --prefix=$HOME Configuring xmonad-0.12... ...
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2answers
127 views

Use X over an intermediate machine

EDIT: I didn't setup my sshd_config file correctly on the WORK machine. Even though I uncommented the line X11Forwarding no, I didn't realize that it said "no" instead of yes. Since the default is ...
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1answer
2k views

dbus-launch terminated abnormally with the following error: No protocol specified

After a recent upgrade in my Arch Linux x64 system, I keep getting this warning message after installing or removing packages with pacman. (gconftool-2:5207): GConf-WARNING **: Client failed to ...
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2answers
196 views

Simulate x-screen?

I'm working in a koding terminal running ubuntu 13.04, and I'm trying to run an application that requires an x-screen (even to run in terminal mode). I am unable to connect with x11 forwarding, and ...
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1answer
37 views

How many XUSER's

I'm working on a script an I need to show how many people are logged into XServer. It was suggested that I look at the last part of the who command (N:N): user1 tty7 2013-10-10 12:14 (:0) ...
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1answer
819 views

Opening session via XDMCP to GDM

I have a RHEL6 server which we connect via XDMCP. If I start xdm (xdm &) it works but the login screen is the old xdm simple login and not gdm. Our RHEL5 servers connect to gdm just fine. The ...
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xmodmap hanging the system for 20 secs and not sticking

I edited the keyboard map using xmodmap as per https://wiki.archlinux.org/index.php/Xmodmap, and I have two problems: executing xmodmap ~/.Xmodmap completely hangs the system for 15-25secs, which ...
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1answer
63 views

How can I get information about my virtual desktops via the command line?

I'm curious how I can get information such as the dimensions of my desktop, which desktop is currently active, and what labels (if any) are set for my desktop enviornment (DE).
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Why temporary lockup of X? Diagnostic suggestions

Recently I have bveen experiencing some strange behavior from a machine. Occasionally X just locks up for a short time 3-5 minutes. Then resumes normal behavior. AFAICT while X locks up, the rest of ...
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1answer
72 views

US International Keyboard Layout not behaving as expected?

Perhaps my question is related to this one. I use to use the English US International Keyboard with Alt-Gr Dead Keys (as far as I remember. This layout allowed me to write é by pressing R-Alt+' and ...
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3answers
558 views

Xft font specification in Rxvt: is it a client-side or server-side font?

I have a headless Gentoo box and would like to run X app on it but forward the display to a Cygwin Xorg server running on my Windows PC. It works but I am not sure in this case if I specify some ...
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1answer
772 views

How can I select all copy from vim and paste to other program e.g. mail client?

How can I do the following? Copy all text from vim and paste it to an external program e.g. mail Outlook? I tried +y and gg*yG but the paste does not work.
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1answer
63 views

Computing the visible area of a partly hidden window

I have to (scriptly) take screenshots of windows, some of which may be partially or fully hidden by other windows. Of course, in such a case the screenshot is useless, and I'd rather print a warning. ...
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198 views

Performance and limitations of using an X GUI remotely?

I don't really have any experience with X. It appears from what I read that X has always been built from the ground up to allow windows in the WM to be transmitting over the internet, without ...
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54 views

Make Compose not compose after certain key presses

On my laptop, I use the Win as a modifier. With the Fn key pressed, the key sends a different keysym and I use that as a Compose key. keycode 133 = Hyper_L keycode 134 = Multi_key add mod4 = Hyper_L ...
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212 views

How can I get X to autodetect monitor specifications again?

I'm running fc19 in 64 bit. After going through the horrible process of trying to install kmod-nvidia, akmod-nvidia, and the proprietary nvidia driver, in an attempt to get CUDA working, I have rolled ...
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1answer
176 views

VirtualBox Guest Additions causes problems with X server in Fedora 18. How to solve without reinstalling?

I've installed VirtualBox (and it's Guest Additions), and after updating the kernel to the latest and also updating VB accordingly, I can not boot normally . (X server doesn't start, but I can login ...
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1answer
453 views

Shortcut keys that are independent to keyboard layout

Is there a way to define an association of a particular physical key of the keyboard to some action, independently of the letter that this key is associated to in any layout? Example: In most ...