I have an Aluminum PowerBook G4 1.5GHz connected to a newer Apple 23" HD Display and am having a problem when the power goes out in my house. It seems when I have a power outage, the PowerBook goes to sleep as it should, but when power is restored and I try to wake it from sleep nothing happens.
The only way I've found to get the PowerBook to work is to hold the power button down until it does a force shutdown, then restart it.
I'm not sure why this is happening. I'm thinking it has to do with the display being connected. Any ideas how to fix this?