On Saturday, April 04, 2015 2:41:12 PM lee wrote: > I always can't remember which keys to press with that, so I have it > disabled. > > And when the keyboard is unresponsive, it won't work.
It will in many cases (probably most). Usually it's xorg that "freezes" the keyboard, in those cases ctrl-alt-sysrq-r followed by ctrl-alt-f1 should get you to the VT where you can restart xorg. I think the kernel needs to be completely locked with interrupts disabled or locked in a higher priority interrupt (unlikely) for it not to work or the USB stack totally broken. I can see some of the commands failing or even completely locking the kernel if something's really messed up. -- Fernando Rodriguez