How can I get xrandr to detect both nvidia cards: 2 x GTX480, triple-head?
In the terminal, run these commands:
xorg
Forwarding X11 over SSH if the server configuration doesn’t allow it
Consider a situation where I’m logging in over SSH from machine A to machine B, I have an X session on machine A, and I want to run an X program on B.
Reassign Ctrl and Alt keys – xmodmap ‘BadValue’ error
I am attempting to remap my keyboard in order to make emacs usable. My ergonomic keyboard puts its single Control key in an isolated 4-key island way off to the left.
How to disable Hardware Acceleration in Linux?
How can I turn off Hardware Acceleration in Linux, also known as Direct Rendering. I wish to turn this off, as it messes with some applications like OBS Studio which can’t handle capturing of hardware acceleration on other applications since it’s enabled for the entire system. Certain apps can turn it on and off, but can’t do this for desktop and other apps.
Emulate horizontal scrolling with Shift key
I want to emulate horizontal scrolling when I use my (vertical) scroll wheel and pressing Shift.
How to make Compose work in GTK and Qt apps?
I used Gnome for a long time, but preferred vanilla X input method (xim) over the default GTK behaviour. I just set GTK_IM_MODULE and QT_IM_MODULE environment variables to xim, and didn’t have any problem with multiple-layout config, Compose key, custom ~/.XCompose and misc:typo typography extensions.
Edid information
I want to gather the Edid information of the monitor.
I can get it from the xorg.0.log file when I run X with the -logverbose option.
List all valid kbd layouts, variants and toggle options (to use with setxkbmap)
Is there a way from command line to retrieve the list of all available
keyboard layouts and relative variants?
How to start a second X session?
I tried to do it with the command startx 1. It seemed to flicker to a different screen momentarily, but then exited. Got the following error:
Why does the X Window System use a server?
I never really understood why a window system must have a server. Why do desktop environments, display managers and window managers need xorg-server? Is it only to have a layer of abstraction on top of the graphics card? Why do window systems employ a client-server model? Wouldn’t inter-process communication via named pipes be simpler?