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Re: Dual G5 turns off after a while

On Mon, 2005-08-22 at 16:10 +0200, Daniel Jedecke wrote:
> I use the standard Sarge Kernel ( 2.6.8-power4-smp 2.6.8-12 )
> I will try to build my own kernel, but is a Dual G5 such an exotic Mac?

Nope, and a lot of them are running happily without any problem.
However, I do get occasional reports of such overtemps. I'm not too sure
what's happening at this point. I suspect several possible things. One
is that some models have incorrect heatsink seating, others may have
incorrect thermal calibration infos. The problem is that MacOS will
silently slow down the CPUs when reaching critical temperatures, and
thus, it will "hide" the problem (your machine will just be a bit slower
if you have a defect in the heatsink for example) while Linux doesn't
implement CPU speed change on those models, and thus will go critical.
It's also possible that the driver is a bit too sensitive, but when I
wrote it, I wanted to be on the safe side of things....

The fact is still that your machine isn't behaving normally. If you
manage to build your own kernel, can you enable debugging in
drivers/macintosh/therm_pm72.c and have a look at the temperature values
you read there ?


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