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By default Ctrl + Alt + BackSpace key combination in Ubuntu Jaunty was disabled.This shortcut key is used to restart X.This tutorial will explain how to enable this key combunation.
Install the “dontzap” package using the following command
sudo apt-get install dontzap
Open Terminal and type
sudo dontzap
--enable
or
sudo dontzap
--disable
Where “disable” means that Ctrl+Alt+Backspace restarts the xserver while “enable” means that it won’t.
Update :- Some more solutions from our readers
1)You don’t need to install software to enable it. Simply add the following lines to your xorg.conf file, making sure that when you paste it, it is NOT using smart quotes.
sudo gksudo gedit /etc/X11/xorg.conf
Section “ServerFlags”
Option “DontZap” “false”
EndSection
2) you can use
right alt + printscreen +k
to do the same effect
also, you can simply do this
sudo /etc/init.d/gdm restart
or, the same:
sudo /etc/init.d/gdm stop && sudo /etc/init.d/gdm start
I put the second command in my aliases so i can restart all X simply by typint “shit!” xDDD