[ltp] fan on/off: the role of the kernel

Damien Challet linux-thinkpad@linux-thinkpad.org
Fri, 18 Feb 2005 12:43:07 +0000


Dear All,

There seems to be quite a few problems with fan on/off and thinkpads. In my 
experience, the only kernels able to _stop_ the fan once on are those of SuSE 
9.2 (I do not know why: mandrake 9.2, yoper 2.2 etc do not stop the fan).

You can also fine tune the trip points of the fan by fiddling 
with /proc/acpi/thermal/THMx/trip_points, e.g. for a 600E:

echo '63:0:0:45:0' >/proc/acpi/thermal_zone/THM2/trip_points

(at your own risk)

Good luck

Damien


-- 
Damien Challet
Nomura Centre for Quantitative Finance
Mathematical Institute,
St Giles' 24-29, Oxford OX1 3LB United Kingdom
phone: ++44 1865 280608  fax: ++44 1865 270515