CPU getting hot or maybe not

[Frederic Muller]

Hi!

As written in my previous message my laptop gets shutdown within minutes 
(below 15 minutes) after using it under Rawhide. This is not something I 
experienced under F16, though I have 2 add a bit of context:
- this is a T60 thinkpad (rather old piece of hardware)
- I never had fan issues under the fan broke down (or the sensor) and I 
replaced it with a new one
- This happened at the same time I switch distro from Debian / Ubuntu (I 
was going back and forth) to F14.
- Since my early usage of Fedora I have noticed some thermal issue 
preventing me at times to restart my machine after long hours of usage 
or a yum update. This had never happened before but I don't want to 
blame Fedora for it at all (and rather identify the root cause of the 
problem).

So now that I am with Rawhide since yesterday this thermal issue has hit 
me big time making my machine unusable. TOP sometimes gives very high 
CPU usage for xorg (up to 65%) but not every time. Most time xorg is at 
around 14% CPU time. I have disabled my external monitor thinking it 
might help to ease xorg's pain.

Now I do touch my laptop to see if it feels hot and it is not really hot 
as it could have been when I experienced the issue in the past with 
F14/15/16. It could be though, that the heat didn't have enough time to 
propagate to the 'outer' parts.

How would you guys go on and troubleshoot the issue? (and yes the fan is 
turning as I can heart it).

Thanks a lot.

Fred