Comment 209 for bug 22336

Gustavo,
If your fan is clean and you can reproduce the issue on your T60
using the latest stable kernel.org kernel (currently 2.6.22),
please file a sighting on bugzilla.kernel.org against ACPI.
I don't expect to find ACPI fan control on the T60 -- as thinkpads
have never had it before, but lets have a look. Please attach
(do not paste) the output from acpidump to the report.
Note that you should try with and without the thinpad/ibm_acpi driver loaded.

Tim,
5024wlmi is an Acer, yes? Acer _does_ tend to use ACPI fan control,
so we may have a fighting chance of doing something with that box.
As above, please file sighting upstream.
Also, to collect the output from acpidump, you may have to boot
the system with "acpi=off", which will likely enable some SMM-based
fan control that will keep the system fans functioning properly.

Michael,
If p4_clockmod is necessary to keep a system cool, then the system either
has some design issues, or failing cooling hardware. This is true also
of using any other cpufreq frequency control. For a properly designed
and functioning system should be able to cool itself sufficiently to
sustain maximum performance as long as necessary. cpufreq may make the system
run cooler on average, but doesn't address the case where the system
is fully utilized where cpufreq does nothing.