On Monday 26 December 2011 12:52 AM, Ritesh Raj Sarraf wrote:
I have a similar laptop, a T400, and I have been
seeing the same problem lately.



This is not a laptop-mode-tools bug. It is believed to be a
kernel bug in the cpufreq driver.*



To confirm, could you try to reproduce the problem after
disabling the cpufreq module? If possible, also ensure that no
other system tool plays with the cpufreq driver.



This one is not reproducible in the latest 3.3 kernels as reported
by the users and has been marked as fixed-upstream [1]. I myself am
on 3.3 kernel and have not seen this issue. I could have reassigned
this bug to the kernel team so that they backported the fix, but the
bugzilla has no patch attached. Finding the right commit that fixed
the bug will require bisecting the 3.3 release.



Still am adding the kernel team. Just in case they have any further
information.



[1]

https://bugzilla.kernel.org/show_bug.cgi?id=36132
--
Ritesh Raj Sarraf
RESEARCHUT - http://www.researchut.com
"Necessity is the mother of invention."