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The Powerbook Narcotic Sleep Issue
Since the summer of 2005 I've become a proud owner of a Powerbook G4. Unfortunately after about 18 months, he started to fall asleep. At random. Quite the issue you can imagine. I had a look in my logs, and it appeared my Power Management Utility (PMU) received an overtemp signal.
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powerbook:~ Chasnam$ cd /var/log/
powerbook:~ Chasnam$ cat system.log
***
Jun 1 17:24:08 powerbook kernel: Power Management received emergency overtemp signal. Going to sleep.
Jun 1 17:24:08 powerbook kernel[0]: System Sleep
***
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I found a fix on this site by danny hajieck. But it didn't quite to the trick. The last addition to the site is based on the fix that did the trick for me (Daan) and which I'll recap here. First I moved the kernel extensions to a backup map (you can also disable them, but whatever you do, don't delete them, so you can still put them back).
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powerbook:~ Chasnam$ cd /System/Library/Extensions/
powerbook:/System/Library/Extensions Daan$ sudo mkdir backup
powerbook:/System/Library/Extensions Daan$ sudo mv AppleCPUThermo.kext backup
powerbook:/System/Library/Extensions Daan$ sudo mv AppleLM7x.kext backup
powerbook:/System/Library/Extensions Daan$ sudo mv AppleLM87.kext backup
powerbook:/System/Library/Extensions Daan$ sudo mv AppleLM8x.kext backup
powerbook:/System/Library/Extensions Daan$ sudo mv AppleLMUController.kext backup
powerbook:/System/Library/Extensions Daan$ sudo mv AppleThermal.kext backup
powerbook:/System/Library/Extensions Daan$ sudo mv IOI2CControllerPMU.kext backup
powerbook:/System/Library/Extensions Daan$ sudo mv IOI2CLM6x.kext backup
powerbook:/System/Library/Extensions Daan$ sudo mv IOI2CLM7x.kext backup
powerbook:/System/Library/Extensions Daan$ sudo mv IOI2CLM8x.kext backup
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Afterwards I cleared the kernel cache, and rebooted holding down the Option+Command+O+F so I'd get into Open Firmware
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powerbook:/System/Library/Extensions Daan$ cd ..
powerbook:/System/Library/ Daan$ sudo rm Extensions.kextcache
powerbook:/System/Library/ Daan$ sudo rm Extensions.mkext
powerbook:/System/Library/ Daan$ sudo reboot
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When I got into open firmware I resetted the nvram and rebootted.. And my powerbook has been working ever since.
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