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Subject: Re: schizophrenic G5 ...
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Christian Krafft <parabelboi@bopserverein.de>
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> I have a very similar problem on my mac at work.
> I don't know atm how to look up the critical temperature that is
> fused. My mac reported only 55 degrees for the one cpu.
> The critical temperature can be read from the device-tree if i remember
> it correctly.
> I heard that there exists a bootable CD which contains a tool to refuse
> the CPU. Dont know where to download it, so my pragmatic solution was to
> relocate the machine to a room with air conditioning ;-)
> And I also run the ONE cpu at lowest frequency.

The calibration info is in an i2c EEPROM iirc, though we read it's
content via the device-tree.

Cheers,
Ben.