Another way to define a keyboard combination to terminate the X server, that doesn't destroy users' XKBOptions, is to define this in the livecd ubuntu-mate seeds:
keyboard-configuration keyboard-configuration/ctrl_alt_bksp boolean true
Although I don't think that this should be flavor specific, I vote that 90-zap.conf be completely dropped.
Another way to define a keyboard combination to terminate the X server, that doesn't destroy users' XKBOptions, is to define this in the livecd ubuntu-mate seeds: configuration keyboard- configuration/ ctrl_alt_ bksp boolean true
keyboard-
Although I don't think that this should be flavor specific, I vote that 90-zap.conf be completely dropped.