Existing users, 
Fixed noise issues on a orginal dual 1.8 G5 - OS 10.3 through to 10.3.5 (pulsing & chirping noise)
Like many people I have to turn off napping upon every boot. Someone mentioned creating a script. I wouldn't have a clue how one would do this?
Apple CHUD Tools
Computer Hardware Understanding Development.
Version: 4.6.2
Fixes G5 noise
Feedback Type: Review
Contributed by: tony_sabbath Tuesday, October 05 2004 @ 08:54 PM PDT
Product Platform: MacOSX
Used Product For: Over One Year
Recommend Product: YES
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Comments
Fixes G5 noise - Norman Dallura
Got to macosxhints.com and search for CHUD,Thursday, October 14 2004 @ 05:22 PM PDT
Fixes G5 noise - Mark Paterson
Go to Script Editor and paste this (WITH the quotes)....do shell script "hwprefs cpu_nap=false"
Then go to File/Save As and save as an application. Then load the application into your Startup Items in your Account preferences (in System Preferences). Next time you reboot it should be a lot quieter, although sometimes it doesnt work and you have to manually set it. But i've not tested version 4 yet so maybe they fixed that bug. Good luck.
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Tuesday, October 12 2004 @ 04:34 PM PDT