Comment 1 for bug 114312

Revision history for this message
Diego Iastrubni (elcuco) wrote : Re: Lenovo 300n N100 overheats when running 2.6.20-15-generic

After initial panic, I started testing. On Linux the temperature can get as high as 60, while on windows it reaches 32 in idle.

I rebooted the machine instead of hibernating it, and I started issuing some dummy test commands (whilte true; do cat /dev/null > /dev/zero) while quering the temp of the machine (watch -n1 cat cat /proc/acpi/thermal_zone/*/*). I can see the temp getting high from 52 to 62, and then the fan started working (I also added another test thread to test the other CPI, as this is a dual core machine). The highest temperature I measure was 62 with fan working lightly. The lowest temperature measured was 49.

Then on the second test, I hibernated the machine and on restart I did the same tests. Now on 2 "cat" threads, the temperature was up 72, and the fan was not working at all. When I stopped the test threads, the temperature did not drop down as on the first tests.