How do I enable Ctrl-Alt-Backspace to kill the X server? [duplicate]

Solution 1:

I only tested this on 13.10+, but you could do the following on the terminal type:

sudo dpkg-reconfigure keyboard-configuration

This will open the keyboard configuration script. Press enter 5 times if you don't want to change any keyboard configuration and only want to kill X. When you get to the Kill X option which looks like this:

Select YES and press enter. Wait a bit while everything configures and after that you should have the ability to CTRL+ALT+BCKSPC right on the current session. After saving any work you have pending, try it yourself.

Perfect to solve any visual issues or annoying apps.