The CTRL+ALT+Backspace was disabled by default years ago (when X11
crashed constantly I guess)

http://www.humans-enabled.com/2013/10/ubuntu-1310-enable-controlaltbackspace.html

On 21 January 2014 15:16, Kai Wüst <kai.kai@...> wrote:
> Hello List,
> how do I enable calling xkill by pressing ctrl-alt-esc?
> Furthermore, what do I have to change to kill X by pressing
> ctrl-alt-backspace?
> tia,
> kai
>
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