Method 1: User specific configuration.
Add the line 'setxkbmap -option terminate:ctrl_alt_bksp' to '~/.xprofile'.
Unless you previously created it this file doesn't exist in which case you can open your favorite text editor (gedit, kate, etc...) and type or copy/paste the following lines:
Code:
# This file '~/.xprofile' should be used to customize the environment of your X login session similar
# to the way you would use '~/.profile' to customize the environment of your command line login session.
# export PATH="~/some_directory:$PATH"
# export WINDOW_MANAGER="/usr/bin/fluxbox"
# Eexport LIBOVERLAY_SCROLLBAR=1
setxkbmap -option terminate:ctrl_alt_bksp
Save the file as Log out and log in to activate the change.
If you use lxdm as your display manager method 1 will not work because '~/.xprofile' fails to get processed while using it.
To undo open your text editor (gedit, kate, etc...)
Files beginning with a dot are considered hidden so in the file open dialog box where it ask for the location or name type delete the line of text
Code:
setxkbmap -option terminate:ctrl_alt_bksp
save and exit.
Log out and log in to activate the change.
Method 2: System wide configuration.
Add the line
Code:
Option "XkbOptions" "terminate:ctrl_alt_bksp"
to the "InputClass" section of xorg.conf.
Commonly in Ubuntu this file doesn't exist or if it does, doesn't include the "InputClass" section.
Use the key combination 'Alt'+'F2' to get a run box or open a terminal window if 'Alt'+'F2' doesn't work.
Depending on the desktop you run open the text editor by typing one of the following command lines....
Code:
gksudo gedit /etc/X11/xorg.conf
Code:
kdesudo kate /etc/X11/xorg.conf
or this last one should work for everybody
Code:
sudo -H nano /etc/X11/xorg.conf
Type or copy/paste the text for the "InputClass" section
Code:
Section "InputClass"
Identifier "Keyboard Defaults"
MatchIsKeyboard "yes"
Option "XkbOptions" "terminate:ctrl_alt_bksp"
EndSection
Save and exit.
Log out and log in to activate the change.
To undo open the text editor as indicated earlier using 'Alt'+'F2' or by opening a terminal window and typing
Code:
sudo -H nano /etc/X11/xorg.conf
remove the line
Code:
Option "XkbOptions" "terminate:ctrl_alt_bksp"
save and exit.
Log out and log in to activate the change.
I based this on information I found in the Archlinux wiki.
Tested this using GDM as my display manager and logging into a Lubuntu desktop and an Ubuntu (Unity) desktop.
Later, Seeker
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