Comment 42 for bug 88899

I've commented on a similar bug to this for the Thinkpad T43 (bug#519142), but it seems this is a more general problem.

After some more debugging I've also discovered that my throttling issue is heat-related. For whatever reason, it seems my max cpu speed gets locked at 800mhz when my CPU goes above 53C and does not get reset to 2ghz until the temperature drops to around 51C. I have a 'watch cpu-info' running and I can see the policy change back and forth, so I know something is doing it.

My main problem is that I cannot figure out _what_ is setting this 53C temperature limit. Since I never had this problem on Karmic I know it is not BIOS-related since I did not have this problem on earlier versions.