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Reduce fan noise on PowerBooks
Authored by: bsiminou on Jul 13, '05 12:35:43PM

Does anyone know how to get this change to work on a 12" Rev. D (i.e. 1.5 Ghz) PowerBook? My fans activitate when the computer reaches 45.8 C exactly. Using Laptop Legs my computer holds steady (after 2+ hours of use) at 45-45.2 C but threatens to skirt the 45.8 C line with several apps open. If I could increase the fan threshold just a little bit, I bet I could get it so the computer's fan would never come on doing basic work. That would be a dream come true. Any ideas?



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Reduce fan noise on PowerBooks
Authored by: janrpeters on Sep 01, '05 10:55:05PM

Works perfectly for me! Just try it yourself!

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Visit http://www.jan-peters.net!



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Reduce fan noise on PowerBooks
Authored by: silentser on Sep 03, '05 08:23:37AM

It is really strange, but I can't make it work on my Powerbook 12''. I replaced AppleADM133x.kext with the one from Mac OS X update 10.2.8 - the fan still turns on at 48-50C. In some places it is said also to replace AppleADT746x.kext - replaced the file and still nothing. The permissions are set to root/wheel. I copied the files through the console (in fact these are directories) and everything seems to be in place. Am I missing something? This noise is really irritating.



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Reduce fan noise on PowerBooks
Authored by: petersconsult on Sep 02, '05 02:14:12AM

I also have been trying to figure out a way to mess with the threshold (except I need it *lower* becasue I use ATICCelerator on my PowerBook, it works great, but the heat boosts right up).
I think if we could figure out a way to mess with the threshold values, we'd all be better off than relying on potentially incompatible kext extensions.
Cheers,
Peter



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