Hi guys, I would like to apport a couple of details:

1) Normally both "acpi -V" and "sensors" output a temperature of 40.0 C all the 
session long, even when the computer is obviously overheating because the fan 
doesn't spin at all.
2) When due to this overheating the computer automatically shuts down and I 
immediately start it again, then the fan spins all the time, and "acpi -V" and 
"sensors" output 75.0 C of temperature, also constant for all the session.

It looks like the temperature is read only once at startup, but it's
also strange that it can only have two values, 40 and 75. By the way my
"critical" temperature is 110 C.

I have been suffering these critical shutdowns since I updated to
Karmic, but I was already suspicious of the fan not working, or not
working much, and some overheating in Jaunty. Maybe then the overheating
didn't get to shutdown just because I couldn't set extra graphic effects
in Jaunty (those jelly windows, you know!! xD) due to another drivers
bug.

I think this is a serious issue: how can I recommend Ubuntu/Linux to anyone now 
if I have to warm them from possible overheating???
Well sorry but I had to say this xD

Joan

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regression in karmic thermal control
https://bugs.launchpad.net/bugs/432670
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