I'm running Linux G5Debian 3.2.0-4-powerpc64 #1 SMP Debian 3.2.63-2+deb7u1 ppc64 GNU/Linux on an Apple G5 Mac Pro. I've set it to sleep after an hour of inactivity but it never seems to sleep. What am I doing wrong - where else might there be a sleep setting? Is there a way to sleep the machine manually? Mike Levin