X.org server: disable Ctrl+Alt+Backspace

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README.rst

Pressing Ctrl+Alt+Backspace on my keyboard restarts the X server, losing all my work.

Reason is that the package ubuntu-mate-default-settings ships a file /usr/share/X11/xorg.conf.d/90-zap.conf, which sets this setting.

Bug report: https://bugs.launchpad.net/ubuntu-mate/+bug/1515968

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etc/X11/xorg.conf.d/dontzap.conf

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Section "ServerFlags"
    Option "DontZap"  "true"
EndSection
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usr/share/X11/xorg.conf.d/90-zap.conf

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Section "InputClass"
    Identifier "keyboard defaults"
    MatchIsKeyboard "on"
 
    Option "XKbOptions" "terminate:ctrl_alt_bksp"
EndSection
Christian Weiske Christian Weiske
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