To get rid of this problem, I managed to control the fan by writing a
small script. I got the background on how to do this by reading the
wikipage in [1] (if you're not German, translate.google.com is your
friend ;)). In short, here are the steps I've done:
- enable fan control by adding "options thinkpad_acpi experimental=1
fan_control=1" into "/etc/modprobe.d/thinkpad_acpi.conf"
- you can read the temperature values by executing $ cat /proc/acpi/ibm/thermal
- you can set the level of the fan by executing $ echo "level x" | sudo tee
/proc/acpi/ibm/fan, where "x" is the level you want your fan to set to.
It turned out, that on my Edge the level 1 was equal to level 4, 2 = 5, 3 = 6.
This means there are 5 different states for the fan
level 0 < level 1 < level 2 < level 3 < level 7
where level 0 means the fan is powered of, level 7 means the fan is
rotating at full speed.
The script I wrote read the thermal information and based on that set
the fan's level. This is by far not a perfect solution, very dangerous
as you can overheat your Edge (!!!) but I hope worth sharing.
[1]: http://wiki.ubuntuusers.de/Thinkpad_ACPI
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https://bugs.launchpad.net/bugs/670127
Title:
Thinkpad Edge 11 fan is too loud
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