It is possible to configure the system so, that is turns ON again on a power down. Maybe this settings is turned ON (in power management) and that cause the system to turn ON after a power down (HIGHLY required for e.g. SERVERS, which should be online 24/7). After a power loose, the SERVER restarts automaticly and will be online without user interaction.I am unable to shut down my G4 laptop. I select shut down from the menu bar or by pressing the power button and the G4 turns off , then it immediately restarts. What can I do to resolve this problem?
That settings is not related to the OS, but to the MAC itself (PRAM Setting).Thanks for the help, but I think it has already been mentioned in this thread that we've tried that.
I can't speak for geordie's original "can't shut down G4" situation, but I've tried multiple boot partitions, and changed the "reset after power failure" settings on each boot system used.
I'd be very surprised if this is a simple OS X system settings issue.
You adjust a PRAM setting by the OS, nothing new there. Remember that when a power failure occurs and power returns, there is NO os to restart the computer, the computer itself will have to take all the actions to restart. Resetting PRAM should also clear the setting for most systems, i could image that the xserve might not do this, as this function is particular usefull for server like systems.Thanks Kees,
okay, so if you're saying that the "startup after power failure" property is stored in PRAM, cool. But it can be switched by the OS...so if this is the problem, then the combination of resetting the PRAM and ensuring the "restart after power failure" checkbox is subsequently not selected should have fixed it, right?
'cause it didn't... so I assume that fixing it is more than a matter of tweaking settings... seems like hardware to me; bad power switch or something wrong with the [out of spec.] power-on-over-USB-system seem the most likely candidates to me.