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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Java programs steal focus in X11

I run IntelliJ IDEA & some other Java GUI apps on my linux box. Every one of them tends to steal focus when launching up, and doing it in stealthy way. E.g.: I run IDEA, it starts up in ...
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140 views

Can I put multiple X windows into a single larger window?

Say my main process spawns a couple windows. I'd like to group them in a session-leader master window (a just-the-frame minidesktop for the window group if you will). What can I do to achieve this? ...
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Xorg configuration hook for unblank screen

Is is possible to execute a command automatically when X comes out of a power saving screen blank? I.e., something that would be triggered when I hit a key/move the mouse to power up the display ...
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ssh with -Y results in “shell-init: error retrieving current directory: getcwd: cannot access parent directories…”

I ran an X app sudo'ed from my normal account, using: mylappy$ ssh -Y me@myhost.com me@myhost.com's password: [me@myhost ~]$ sudo su - [root@myhost ~]# su - me -c 'xauth list' |\ grep `echo ...
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1answer
17 views

Nvidia drivers debian wheezy

I had some problems with my graphics card. I tried following the instructions from here https://wiki.debian.org/NvidiaGraphicsDrivers to install the appropriate drivers. The result is I can't ...
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285 views

What is `/tmp/.X11-unix/`?

I asked Google the same question and didn't like the results I got. What is /tmp/.X11-unix/?
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How to keep displays “set” and not vanishing when screenblanking or turned off?

I have thee screens and am finding it very annoying and distracting to find (1) my X settings have changed to make the leftmost Primary and not aligned right, and (2) all the windows moved onto the ...
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How to set up XKB to work with 3 modifier keys and 2 switchable layouts?

Consider the following XKB layout: xkb_keymap { xkb_keycodes { <ESC> = 9; <FK01> = 67; <FK02> = 68; <FK03> = 69; <FK04> = 70; <FK05> = 71; ...
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How configure properly vncserver in Red Hat Enterprise Linux Server release 6.5

I'm trying to start vncserver in a Red Hat Enterprise Linux Server release 6.5 with an user created for that, and when I type vncserver I got this: WARNING: The first attempt to start Xvnc failed, ...
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12 views

build X11R7.7 from sources - in which order

Is there an automatic way to understand the order in which individual libraries of the X11R7.7 package should be built when I want to build all of util, lib and xcb?
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My shift/ctrl and numlock keys stopped working

My ctrl and right-shift keys are not responding, though they still work in a VMware window. Numlock doesn't work. A held-down key does not repeat. clicking in a field in another window does not make ...
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Cannot resize windows remoting-in through X11VNC?

As title says, I am remoting on to a Linux box (CentOS 6) using X11VNC. However, I cannot resize any windows manually by hovering over the frame, because the frame resize cursor does not appear. ...
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23 views

Copy to both X11 clipboards from vim

As far as I can see, with VIM I can choose between set clipboard=unnamed - yank to X11's primary selection buffer (middle-mouse button paste) and set clipboard=unnamedplus - yank to to X11's ...
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10 views

General way of debugging vmware mouse issues in X11

I run a virtual vmware archlinux installation, and constantly have problems with mouse grab/ungrab. At some point it was fixed by commenting out pointer lines in 10-evdev config, but on every update ...
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How do I obtain a handle to the Window Manager frame for a given Window in Xlib?

So I'm making a screenshooter app that gets the active window using XGetInputFocus(); but when I try to take a screenshot of that window using XGetImage, I get an image without the window decorations ...
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1answer
28 views

Start a single color full screen from the terminal

For testing displays, I need to show a single color fullscreen, and quickly switch from one to the next color. Can this be done from the terminal? Something like this: DISPLAY=:0 color #ff0000
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1answer
11 views

Xmodmap remapping Caps, but still triggering Caps Lock

Im using CentOS 6.5 workstation, pretty standard config, with normal dell keyboard, EN/US lang and keyboard layout. I have the following in the .Xmodmap keycode 66 = Control_L clear Lock add Control ...
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1answer
36 views

Remapping Caps Lock to Compose

Because I now and then need to use scandinavian letters despite using US Dvorak as my layout, I would like to use Caps Lock as a compose key. (I don't need Caps Lock at all, I'm not a forum troll) ...
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X11 oddness - Installer shows squares instead of text. Font issue?

Using X11 and launching of X applications generally works (using xming). However when launching websphere installation (IBMIM) the resulting gui interfaces shows squares instead of letters. Have ...
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How Are Keys or Keycodes Mapped to X Key Symbols?

I am trying to map a function key combination to an XF86 key symbol. The key combination is Fn+F1, which I was able to use showkey to get the raw keycode for. jason@io ~ $ showkey kb mode was RAW [ ...
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2answers
54 views

What's the closest you can get to rebooting without killing all running processes?

How can I get the effect of rebooting on refreshing the system (freeing resources and reinitialising them) without killing most of the things I have running? Could I unload and reload kernel modules? ...
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3answers
93 views

startx autologin does not run in /etc/inittab in after Debian Jessie update

I installed a minimal Debian system (stable) without GUI, switched to testing/jessie to be able to get the Cinnamon desktop, but X didn't start on boot. If I log in as myself at the CLI, I can type ...
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748 views

What is DISPLAY=:0?

What is DISPLAY=:0 and what does it mean? It isn't a command, is it? (gnome-panel is a command.) DISPLAY=:0 gnome-panel
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1answer
33 views

Why can X11 access the video card?

This one is maybe a bit theoretical, but... How the heck can X11 touch the video hardware? As I understand it, X11 is an unprivileged user-mode program. But only kernel-mode software can access the ...
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61 views

My ssh server stopped working after I did something [closed]

I'm very new to Linux, BTW. The ultimate goal for me is to run applications and their GUIs on a (Mac) computer from another computer. The first step is to just use SSH to access and control the ...
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30 views

ssh x11 forwarding drag-and-drop

Is it possible to drag-n-drop into x11 forwarded application? For instance, I'm forwarding skype and I'd like to send a file by dropping it into message box. Yes, I know I can work it around. This ...
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39 views

How to attach keyboard and mouse to another screen?

By default, the X server would attach keyboard and mouse to display 0:0, but how to change it to another screen such as 0:20?
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oxmplayer is on top and blocking every other GUI application

I want to display notifications popups(osd_cat) on my screen while running oxmplayer but it seems that the latter is on top of everything and doesn't allow the notification to appear. I run the ...
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10 views

How can I maximise Netbeans window from the terminal?

I am on CentOS 6 and using VNCViewer to remote in to a box which has four monitors. The problem is VNCViewer won't allow me to click on the Netbeans Window "Maximise" square, top-right, so I can ...
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1answer
48 views

GParted Live on Hard Disk with Ubuntu

Edit Please note that I fixed the original problem of not booting, but I still can't get it to run X-windows after being prompted for language, input, and display resolution. Original question I read ...
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1answer
45 views

How to set the monitor brightness gracefully at boot time?

I've been using a loop that contains xrandr --output VGA1 --brightness 0.3 in a bash script which will automatically execute right after logging in by gnome-session-properties (a.k.a. Startup ...
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how to display osd_cat on a remote HDMI Screen [duplicate]

i have installed xosd an used osd_cat to display text in my screen. the problem is that i cant do it on the remote station on the remote screen through SSH. I want to execute osd_cat on the remote ...
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2answers
34 views

How to disable the keyboard's numeric keypad?

I want to disable all numpad keys; the ones located on the right side of my keyboard. How can I do this? Of course, I would also like to know how to revert the action an re-enable the numeric keypad. ...
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1answer
28 views

Xorg/Twm window has focus only when mouse is over

I have Xorg with Twm and xterm installed on Arch linux, and when I start the X server, I can type in xterm only when the mouse pointer is over its window. I have been searching options to Xorg and Twm ...
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0answers
22 views

How to use Xfig on high DPI screen?

On a high DPI screen, lines in Xfig are very thin. Is it possible to scale the lines, or the entire Xfig UI? Note that I don't want to scale the entire desktop. Other application UIs are legible on ...
2
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1answer
38 views

How to remotely send a keypress to an X11 application?

I've got an X11 program (Mathematica/Linux) running which contains unsaved data (calculated after I left; unfortunately I didn't have the foresight to programmatically save the data). Now I've gotten ...
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44 views

Increase the number of lines scrolled by a mouse wheel tick, everywhere

When I use the mouse wheel, I want to be able to configure it to scroll by multiple lines at a time, e.g. each tick would scroll 5 lines. In Windows you can increase or decrease the number of lines ...
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2answers
32 views

How display a text for users in the entire screen

I want to display a text above the user screen(as an upper layer). I know that there is solutions like xmessages that could display the text in a box, But need it to be displayed without a box on the ...
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X11 forwarding to IP doesn't work on some servers. I can't find any config differences

This command allows me to send an xterm to xming on my windows desktop: xterm -display 10.13.18.125:0 (my workstation IP) For the servers that it doesn't work with the IP, It will work for some ...
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1answer
20 views

Start an application on initial workspace instead of current workspace

If I start an application and switch workspaces in the time the application is starting up, the application goes to the current workspace and not the one "from which" I called it. Where can I change ...
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1answer
12 views

Remap mouse button 8 (“browser forward”) to mouse button 2 (“middle click”) on RHEL

What would be the proper way to remap mouse buttons on RHEL? xbindkeys doesn't seem to be available on my repos (not RHEL default, but enterprise custom repos). I guess I could install it on my own, ...
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78 views

Middle-click scrolling with ThinkPad/avoid pasting

I have a ThinkPad USB keyboard, and I want to be able to use the middle click both for pasting and scrolling. This works on my ThinkPad laptop. On the laptop, if the middle click button is held for a ...
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1answer
24 views

Is there a way to replace the currently selected text on X11?

I stumbled across xclip which gives you access to the text you have selected on your active window. I've been thinking if there was a way to alter such text. The workflow I have in mind is the ...
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3answers
461 views

Capture the X11 protocol's traffic

How I can capture the X11 protocol's traffic? I need find a way to capture X11 traffic between two machines and also between an X11 server and an X11 client on local machine.
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2answers
60 views

Allow virtual terminal switch only for root

I'm currently working on a CentOS system (with Gnome desktop), where i want to disable the use of console for non allowed users. Actually when logging in with a standard user it launch my app and ...
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1answer
71 views

Fast drop-in replacement for ssh -x

I'm looking for something to provide faster X11 fowarding than ssh -X provides. I do not need a full GUI session or the ability to drop/resume user sessions. I use NX regularly, but as far as I can ...
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Why does gstreamer-ffmpeg change the fonts for java applications?

I recently installed gstreamer-ffmpeg-0.10.i686 on RHEL 7. As a result of this text in my java program has become slightly larger (maybe 2 or 3 font sizes), which is enough to mess with some of the UI ...
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48 views

Xmove is unable to connect to X11 server via SSH X forwarding

I have a LAN where a windows machine running Cygwin (XWin server) is used to connect to a Linux host via SSH with trusted X forwarding. I connect with $ ssh -Y user@linuxhost without any issues and ...
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How to show the status of all modifier keys in X11?

I have a remote connection through NX client (Remmina) on my local box (Ubuntu 12.04) onto a remote Linux box (CentOS 5.3) with no root privilege, and it only has a strictly restricted internet ...
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2answers
47 views

X11 display entered zoom mode. How do I exit?

I pressed something around my mouse pad (keys in the altgr region+mousepad - quite possibly multitouch) and suddenly the whole X11 display zoomed around 10%. That means I can see 90% of the 1920x1080 ...