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Restore Energy Saver functionality after system update System
After applying the screensaver security update, my iMac 400 DV experienced sleep issues where it wouldn't go to sleep no matter what the Energy Saver was set to do. No applications were open, and the display would go black but the green light remained on all night. I did everything from reseting PRAM, running fsck, trying Norton, repairing permissions, open firmware reset, etc. Nothing worked.

The solution that I found was that to login as the root user and trashing the PowerManagement.bundle folder in /System -> Library -> System Configuration. I then logged in via Ethernet to my iBook 800 and transferred a copy of the healthy folder onto the affected computer, changed ownership to "System," logged out from the root user, restarted, and then logged in as the regular user. I then tested everything, and it all worked fine, including letting it to go to sleep a couple of times without issues.

I guess it can work from any healthy Mac as long as its running the same version of the system. A person using the same fix but running a Power Mac G4 tower, did get initial positive results but then developed issues with display configurations on his dual display setup. Since my iMac has no specialty video cards, I guess it worked well.

[robg adds: I can't confirm this one; has anyone out there applied the same fix? Also, if you don't have a second Mac, you may be able to find a non-corrupted version of the PowerManagement.bundle by exploring the system restore disks...]
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Restore Energy Saver functionality after system update
Authored by: robmorton on Jul 29, '03 10:44:11AM

I would suggest just trying to delete
/var/db/SystemConfiguration/com.apple.PowerManagement.xml
first. It may fix your problem and would be a lot easier. You could also look at how to use pmset, but I believe deleting the file above would generally be the easiest fix.



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Restore Energy Saver functionality after system update
Authored by: shawny on Jul 29, '03 11:13:24AM

Rob's advice follows what I was once advised to do by an Apple support tech, which at that time did do the trick. This was prior to the screensaver fix, but was in order to correct my PowerBook not going to sleep.

I was interested to find that of the three files in that directory, all were owned by root, but were in different groups: staff, admin and wheel. The PowerManagement.xml file, after being moved out of the way was recreated as a member of group 'staff'. Not sure if it's "correct," but that's my experience.



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Restore Energy Saver functionality after system update
Authored by: unimatrixzxero on Apr 10, '04 07:58:25AM

I use Panther and don't have a /var/db/SystemConfiguration/ folder.
I don't even have the com.apple.PowerManagement.xml
file on my Mac. I just have a com.apple.PowerManagement.plist is that the same? I also haven't got any PowerManagement.bundle on my HD. I do on my recovery DVD that came with my Mac. But I have no where to copy. Can somebody help me. Because my Mac isn't going to sleep what-so-ever.



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