5.11. X Window System (Graphics)
This section contains information related to the X Window System implementation, X.Org, provided with Fedora.
The key combination
Ctrl+
Alt+
Backspace to kill the X server has been
disabled by default as a decision of the upstream Xorg project. You can change the default by adding the following section to your
xorg.conf file. If one does not exist, you can create it manually at
/etc/X11/xorg.conf using a text editor and Xorg will honor that setting.
Section "ServerFlags"
Option "DontZap" "false"
EndSection
If you use kickstart or want to use scripts to change this setting automatically across multiple systems, you can use the following snippet:
%post
grep -q -s DontZap /etc/X11/xorg.conf
append=$?
if [ $append -ne 0 ]; then
cat >> /etc/X11/xorg.conf << EOF
Section "ServerFlags"
Option "DontZap" "false"
EndSection
EOF
fi
%end
The Xorg project has changed the default DontZap setting to "true" after complaints from desktop users that accidentally hit Ctrl+Alt+Backspace when trying to type Alt+Backspace, Ctrl+Backspace, or Shift+Backspace, or who had StickyKeys enabled. Ctrl+Alt+Backspace is also a keyboard shortcut for deleting certain expressions in C and Java modes in Emacs.
