credit: Panji Nushantara
In Ubuntu/Kubuntu 9.04 I like to have Ctrl-Alt-Backspace enabled to restart X server, which I found a quicker way to log off and log on since I use to hop around from Kubuntu to Ubuntu and back.
And I want it too in my Ubuntu 9.10. Fortunately in Ubuntu 9.10 the method is easier, way easier. No editing necessary like in 9.04. So there's how :
In Ubuntu :
* go to Layouts tab and click Layout Options button
* Select "Key sequence to kill the X server" and check "Control + Alt + Backspace"
FYI, previous method for 9.04 Jaunty et al.
Xorg Server 1.6.x and Ctrl-Alt-Backspace
credit: NEPHERTE (DOT) BE (actual poster uncertain)
you can enable it back again by editing the /etc/X11/xorg.conf file. Adding:
Option "DontZap" "false"
will make Ctrl-Alt-Backspace work again. If you’re using xorg server 1.6.1 or later, you’ll have to do some additional stuff. Either add
<merge key="input.xkb.options" type="string">terminate:ctrl_alt_bksp</merge>
to your /etc/hal/fdi/policy/10-keymap.fdi file or run
setxkbmap -option terminate:ctrl_alt_bksp
everytime after you started X.