X.Org Server (commonly abbreviated to Xorg Server, XServer or just Xorg) refers to the X server release packages stewarded by the X.Org Foundation, which is hosted by freedesktop.org, and grants public access to the standard X Window releases for the efforts of the free and open source software ...

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44
votes
8answers
290k views

How do I fix a “cannot open display” error when opening an X program after ssh'ing with X11 forwarding enabled?

After launching the X11 app (XQuartz 2.3.6, xorg-server 1.4.2-apple56) on my Mac (OS X 10.6.8), opening an terminal in X11 and running xhost +, I then ssh -Y to my Ubuntu 10.04 VM (running on VMware ...
37
votes
1answer
23k views

.Xresources or .Xdefaults?

These two files seem to have the same function. What is the difference between the two if any?
27
votes
5answers
30k views

How do I find out my screen resolution from a shell script?

How do I find out my screen resolution from a shell script?
27
votes
6answers
16k views

Alt+click-drag window resizing on a Mac? (Similar to X-Windows)

Is there a way I can get this behavior on Mac OS? alt + right-click-drag will resize the window, relative to where you've clicked within the window and the window's center alt + left-click-drag will ...
22
votes
4answers
10k views

Detecting currently active window

The linux commandline tool wmctrl allows you to list all windows, or all desktops, among other things. In the desktop-listing mode, the current desktop is marked with an asterisk. I need a tool that ...
21
votes
6answers
8k views

NumLock is completely useless, and I want to disable it completely on Linux

Forget all the rants about Caps Lock, Num Lock is the most useless key of them all. It's never, ever useful. You don't want to use your numpad as an arrowpad, since the arrows are 1cm away from it. ...
18
votes
4answers
27k views

Get display resolution from the command line for Linux Desktop

I'm looking for a method of reporting display resolution. I want to set up scripts to launch rdesktop, and I want to launch it on several machines with different resolutions, so I want a way to ...
17
votes
3answers
7k views

Updating screen session environment variables to reflect new graphical login?

I use linux, and I like to do all my command-line work within a single screen session, so that I can restart my graphical login and such without losing my terminals. However, when I log out and back ...
15
votes
2answers
18k views

X11 forwarding from Amazon EC2 AMI

local$> echo $DISPLAY :0.0 local$> ssh -X -i PEMFILE ec2-user@AMAZONEC2_AMI [ec2-user@REMOTE_AMI ~]$ echo $DISPLAY [ec2-user@REMOTE_AMI ~]$ sudo grep X11 /etc/ssh/sshd_config ...
14
votes
5answers
10k views

Browser instead of window manager?

Is it possible to have just a browser (for example, just a canvas that renders with webkit) running on top of X11 (or any other way in Linux) as my window manager, as if I'm viewing my normal web ...
14
votes
2answers
7k views

Speeding up remote X sessions

I have a remote machine running Ubuntu 11.10 Server, to which I connect via SSH from OS X 10.7.3: Host remote.example.com ForwardX11 yes ForwardX11Trusted yes Sometimes I want to launch a GUI ...
14
votes
4answers
49k views

On Ubuntu 9.10, where is the xorg.conf file in Karmic Koala?

I am trying to change this xorg.conf file that I used to modify under Ubuntu 9.04, so it can have the higher resolutions of my monitor. Under 9.04, the monitor was unknown, and I had to key in all ...
14
votes
2answers
625 views

What XMonad Configuration Best Replicates Default Ion3 Behavior and Feature Set?

Not being very familiar with Haskell and lamenting that Ion 3 is now abandonware, I am curious if anyone out there has found a way of replicating the default Ion 3 behavior and aesthetics in XMonad. ...
13
votes
9answers
8k views

“Detach” and “Reattach” xterms across X sessions?

Is there a way to save/detach an xterm (or another window), and reopen/load/reattach it on a different X session on the same machine ? What I'm trying to achieve is "move" running xterms between two ...
12
votes
4answers
8k views

How do you start a program after X has started?

There's a little app called F.Lux that sets your screen temperature based on the time of day. The Linux version is a little spartan with just a console interface but it works perfectly well. Where ...
12
votes
3answers
15k views

How to find out xorg version? or “what's my xorg version?”

ATI docs says i need: XOrg 6.9, 7.0, 7.1, 7.2, 7.3, 7.4, 7.5 or 7.6 Xorg -version says: X.Org X Server 1.11.1.902(1.11.2 RC 2) [...] X Protocol Version 11, Revision 0 [...] xorg-server ...
12
votes
1answer
905 views

Assigning USB hub to specific seat in multiseat configuration

On my debian-based machine, I have a working multiseat configuration. One annoying detail that so far I couldn't fix is that any USB hardware I connect is always assigned to the primary seat. ...
11
votes
5answers
23k views

how to set the mouse speed very low on ubuntu

I set the mouse acceleration and sensitivity levels to minimum in System->Preferences->Mouse but with the new mouse I have, even those settings are too fast. Is there a way to further reduce the ...
11
votes
2answers
3k views

Disable Unplugged Displays (xrandr)

I have a laptop with two video outputs that I use when I am home (HDMI1,VGA1). To enable them, I do this: xrandr --output HDMI1 --right-of LVDS1 --auto xrandr --output LVDS1 --off xrandr --output ...
11
votes
4answers
814 views

Firefox, two Linux machines, one X-server

I have a Linux machine I regularly log on to via ssh (putty) from Windows. I'm running VcXsrv X-server on my Windows desktop. I mainly use this to run a debugger (ddd) and firefox to access our ...
11
votes
1answer
4k views

How to make Elo touchscreen working for Linux?

Elo touchscreen model: Elo TouchSystems, Inc. Elo TouchSystems 2700 IntelliTouch(r) Problem description: My problem + others problem with this is that, when i touch-over (mouse-over) the ...
10
votes
3answers
13k views

Disabling mouse acceleration in X.Org (Linux)

This is the Linux version of my Disabling mouse acceleration in Mac OS X question. Hopefully I'll get an answer this time. I am tired of mouse acceleration and want to have a completely linear mouse ...
10
votes
1answer
10k views

How to stop the 'd' key from minimizing all windows in Ubuntu 10.10 when connected with Nomachine?

When I connect to my Ubuntu box from any Mac OS X 10.6 client (Snow Leopard) using Nomachine, the 'd' key minimizes all windows on my Ubuntu box. I found another post here that says the issue can be ...
10
votes
1answer
53k views

Starting and stopping X11 and LXDE from command line

I have a Raspberry Pi with Debian Wheezy (Raspbian) and so far I've managed to learn quite a lot about Linux just playing around, but I have a few questions for all you seasoned Linux pros out there. ...
10
votes
1answer
25k views

Where is xorg.conf in Ubuntu 10.04?

I'm in the middle of trying to setup dual monitors on ubuntu and would like to backup my xorg.conf... The documentation I've been thus far say to do the following: sudo cp /etc/X11/xorg.conf ...
10
votes
3answers
6k views

XWindows-like mouse behaviour in Windows 7

I currently use Linux as my primary desktop OS, and have done for more years than I care to remember. In recent years I've settled on GNOME and XFCE as my environments of choice. For a number of ...
10
votes
3answers
5k views

Binding Super+C Super+V to Copy and Paste

For some time I've been interested in binding the Windows Key (Super_L) on my keyboard to Copy and Paste for no other reason but convenience and consistency between my desktop and my MacBook. I ...
10
votes
4answers
2k views

X equivalent of 'screen' utility

Under unix/linux, there is this extremely useful program screen: it's for bash, text-only, and I can detach a session, log out (the session is still running though), log in later (even from a ...
10
votes
2answers
3k views

Practical tips when transitioning to xmonad?

I like the idea and concept of xmonad, however I still keep going back to gnome after an hour or so. This feels like when I first tried to learn vim, but I've gotten past the learning curve point and ...
10
votes
2answers
5k views

Triple monitor setting in Linux with USB-HDMI adapter

I'm trying to set up a triple monitor desktop at my office using Fedora 17, but it seems impossible, let me explain the setting: Laptop ASUS K53SD with 2 graphic cards, Intel and nVidia (Screen ...
9
votes
6answers
3k views

bashrc: how to know X window is available or not?

There is a part in my ~/.bashrc, which sets $EDITOR to be gvim. It works fine when I am in X window. However, if I ssh to my workstation (from another workstation) gvim starts to complain "cannot open ...
9
votes
3answers
3k views

Xorg: How can I map AltGr to the CapsLock Key (to toggle 3rd level symbols)

as many others I don't need CapsLock. I want to reassign it such that it has the function of AltGr. I use Kubuntu 9.10 but I think there must be a solution which is distribution independent. I ...
9
votes
2answers
3k views

debian/ubuntu - invert all colours in desktop session (colors)

Sometimes I need to flip from a light colour scheme to a dark one quickly, and I need it to apply not just to the desktop theme but also to any webpages that are open etc. On the Mac there's a neat ...
9
votes
3answers
9k views

Faking monitor EDID information

My monitor is sort of finicky. Sometimes I run a program that cycles through resolutions and the monitor will refuse to give its EDID information for a few days: (/var/log/Xorg.0.log) [ 239.653] ...
9
votes
1answer
6k views

Linux: Use VNC to create a second Screen

I'm planning to use my 7" Android tablet as second screen via VNC. Sharing my main screen works fine with x11vnc, but that is not what I want. So I created a second screen using the ...
9
votes
1answer
4k views

How to check multitouch in GNU/Linux

I have several questions about multitouch in Linux: Is multitouch and MPX (multi-pointer extension) related? If an application handles multiple cursors does it mean that it is multitouch-ready? How ...
9
votes
2answers
2k views

Enabling hardware acceleration and Xinerama for multi-monitor/multi-GPU in Linux

My current setup is three monitors connected as follows (monitors listed from left to right): GPU0 (nVidia GTX 280): - Dell 2405FPW (1920x1200) - Dell U2410 (1920x1200) GPU1 (nVidia 210): - ...
8
votes
1answer
12k views

How do I restart a frozen screen in Ubuntu without losing any open windows?

I had a device running Ubuntu 12.04 LTS have its screen freeze. Generally I have simply jumped onto an available tty, i.e. Ctrl-Alt-F1 and executed the command /etc/init.d/lightdm restart or service ...
8
votes
3answers
1k views

Emulating extra displays

I have a system with a single monitor, I would like to test the an xmonad configuration that is designed for multiple monitors. Is there any way to emulate a system with 3 monitors using something ...
8
votes
1answer
106 views

How do I specify an IPv6 address in the X Window DISPLAY variable?

I'm trying to export a DISPLAY variable containing a numeric IPv6 address. What format would the variable take, since IPv6 addresses contain :, which normally is used for the display number? Googling ...
8
votes
2answers
3k views

Dropped ssh/X session, how to pickup where left off?

I am VPN from a Linux box to another. I log in to the other box with ssh -X. I open an X window/program in an attempt to do a software installation. The painful truth is that this software cannot be ...
8
votes
1answer
3k views

X on one monitor, a bare, tty terminal on another? (linux)

The graphics card on my computer has inputs for (at least) two separate monitors. I have one monitor that is high resolution, and I like using it for X (anything graphical). My other monitor, however, ...
8
votes
3answers
3k views

using a second computer as a mere screen/monitor in X (VNC?)

My goal is to use three monitors with my Linux system. It is a laptop, so adding another video card is not the easiest solution. (I have investigated a number of such options: getting a docking ...
8
votes
2answers
1k views

copy and paste tabs between terminal windows in X11

When I copy and paste text using the X11 mouse selection between two terminal windows, tabs are often, but not always, converted to spaces. This appears to depend on the involved terminal ...
8
votes
1answer
782 views

Using both Ctrl+Alt to replace AltGr 3rd level function on xorg

On Windows, Ctrl-Alt is mapped to Alt Gr, but not so on Linux. Using Alt Gr for 3rd level keys is wrist-killer! I'm unable to find a workaround that doesn't remove other functionality I use (the few ...
7
votes
4answers
44k views

How do I get X11 Forwarding to work on Windows with PuTTY and Xming?

I've always wanted to get X11 Forwarding to work with PuTTY, and the X Window System I'm using is Xming. When I have Xming running and I establish a new connection to my server, I receive the ...
7
votes
1answer
3k views

How can I view the WMClass attribute of a window in Xorg (linux)?

I am trying to find a workaround for incorrect grouping of windows in Docky, and I believe the problem lies with the WMClass attribute that is set for each window. However, I do not know how to view ...
7
votes
3answers
2k views

enabling sticky keys under xorg (awesome desktop manager)

I would like to enable "sticky modifier keys" under archlinux + awesome, and I haven't found the correct info.
7
votes
2answers
15k views

SSH: launch GUI programs on remote screen, not X display

The problem Most people want to connect to a server over ssh with the "-X" option in order to run GUI programs on the remote host using the display of the client. I would like to run GUI programs on ...
7
votes
2answers
923 views

What is the difference between the X clipboards?

Primary Secondary Clipboard Cut buffers What is the difference between these? Experimenting with xclip and gedit: Setting primary Nothing happens, as far as I can tell Setting secondary Again, ...