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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Notebooks > How to Reset the PMU (Power Management Unit)

How to Reset the PMU (Power Management Unit)
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cskoeshall
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Join Date: Jul 2007
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Nov 2, 2007, 10:42 AM
 
Information:
Powerbook Ti G4 867
Tiger 10.4.10

Issue:
My computer at times will not wake back up from sleep mode. It never goes to sleep on its own, only when I tell it to. All I get is the hardrive functioning, the pulsating light turns off, and a black screen when i open the lid or press spacebar. I then have to power it down and turn it back on.

Can anyone help?
     
Simon
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Nov 2, 2007, 10:59 AM
 
No need to ask in two locations.

As I wrote in the other thread it's right where you'd expect it to be on Apple's support pages.
Apple Support: Resetting PowerBook and iBook Power Management Unit (PMU)
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cskoeshall  (op)
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Nov 2, 2007, 04:38 PM
 
Thanks simon.
     
   
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