How to determine Power On cause?

cpparkin · 02-10-2010, 04:25 PM

Does anyone know of a way to determine how the PC/Server was powered on?
I'm interested in writing a startup script that performs a specific action depending on the poweron cause.

For example:
If powered on by "wakalarm" perform task X & shutdown.
If powered on by "power button" perform task Y.

Is there any way to determine the cause of the power on?
I'm running Federa 12.

Thanks

business_kid · 02-12-2010, 03:21 AM

Not that I am aware of. Power on is fairly stupid, and when you have powered on, you lose the information you wanted in a hardware reset. If you could go round all your power on causes and check were they active, you could decide on actions that way. I mean
phone engaged = modem wake up
nic receiving = network card
alarm (query the rtc or duplicate all alarms in a file) = whatever
none of above = button.