The PowerBook G4 was initially announced at Steve Jobs' keynote at MacWorld Expo in January 2001. Its body was made mainly of Titanium and had a 15" screen.

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How to find a bad kext wich is causing sleep problem

how to find a "bad kext " wich is causing sleep problem?Sleep mode is working by the schedule ,and from apple menu , but not when is staying open without touching it (as i set it in preference pane ). I got advices to check extensions,but cant understand myself how to find wrong kext , bad driver

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This is an Answer not a Question. Only Questions belong here. Please post this as an Update to your original question, or accept meyer's answer with your comment contained in it.

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go to Finder/Hard Drive /Library/Preferences/SystemConfiguration and delete the com.apple.PowerManagement.plist and com..apple.AutoWake.plist files (if your Mac asks, type your admin. password).

If the latter file isn't present in the folder, go to user name(probably your name)/Library/Preferences, delete the com.apple.systemuiserver.plist file, and reboot your Mac.

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