Solved Random Sleep And Will Not Wake Without Complete Power Removal Powerbook G4 Aluminum 17 1 1 67 Ghz
Chosen Solution My PB started sleeping involuntarily after being on for a while. From the temperatures shown with a utility program it seems usually to be showing major overheat beforehand, but there is some irregularity. I have to pull the battery and wait a while for it to be restartable. It also comes back up in verbose logging mode, which shows a line about a temperature problem, also. The fan(s) is(are) doing strange things, like running with great noise as it starts up from this hard sleep....