Apple's line of PowerBook laptops was intended for the professional and power users. The PowerBook line includes the PowerBook 100, Duo, 500, and 5300 Series; the PowerBook 1400, 2400, 3400; the PowerBook G3, G4 Titanium, and G4 Aluminum.

1292 Questions View all

system sleeps randomly, and system log shows the following message

system sleeps randomly, and system log shows the following message,

"powermanagement emergency overtemp signal. going to sleep"

Answered! View the answer I have this problem too

Is this a good question?

Score 1
Add a comment

1 Answer

Chosen Solution

I'd reset the PMU and PRAM to see if that makes any difference. I'm sure you've looked at your sleep settings, but if not, I'd take a look there and see if the machine is falling asleep when it's set to, or at a different time.

It doesn't seem there's a definitive answer to the problem, but here's an interesting thread on the issue:

Was this answer helpful?

Score 2


Since it mentions overtemp I'm including a recent ifixit discussion on that. + for research. Ralph

How can I verify if the cooling fan works?


Add a comment

Add your answer

woodsen will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 0

Past 30 Days: 0

All Time: 572