[Bug 314001] Re: ACPI: Unable to turn cooling device 'on' (Quadcore-AMD64, Ubuntu64)

[schloegl]

Did you consider the possibility that the CPU is really overheating ? In
that case, you should be glad that the machine shut down and avoided
further harm.

The hints from here http://www.coreboot.org/pipermail/coreboot/2009-June/050104.html were most useful: 
- CPU Cooler properly mounted using a good thermal conductivity grease ? 
- Is cpu-throtting (dynamic frequency scaling) enabled  in the Bios ?  Make sure it is enabled. 
Enabling cpu-throttling and a larger cooler solved the problem for me. 

Other possibilities are: 
- Did you check whether the CPU fan is available/running ? 
- Its unlikely but possible that the temperature sensor is not working correctly.

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ACPI: Unable to turn cooling device 'on' (Quadcore-AMD64, Ubuntu64)
https://bugs.launchpad.net/bugs/314001
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