Comment 16 for bug 387620

I'm having a similar problem on "generic" notebook with a Pegatron motherboard. The notebook/motherboard seems similar to the BenQ Joybook S57.
The fan works on the Mandriva 2009.0 that came installed with it and (!) with linuX-games-live 0.9.4. Booting Ubuntu with acpi=off seems to keep the fan on/reasonably fast for some time.
Any files I could post from these system which could be useful for comparison?
One thing I noticed is that Mandriva show lower temperatures _and_ trip points.
Right after a cold boot:

Mandriva:
coretemp-isa-0000
Core 0: +33°C (high = +85°C)
coretemp-isa-0001
Core 1: +32°C (high = +85°C)

Ubuntu, something like(had to erase the instalation, and also lost the saved log :-/ ):
thermal
Virtual: +70ºC (high=90ºC, critical=90ºC)
coretemp-isa-0000
Core 0: +67ºC (high=90ºC, critical=90ºC)
coretemp-isa-0001
Core 1: +64ºC (high=90ºC, critical=90ºC)