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How can I set fans speed to 100% or more in linux ?

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Setting fan may depend on ACPI. For example on Thinkpads you use its ACPI - thinkwiki.org/wiki/How_to_control_fan_speed . Please provide more details (manufacturer and preferably model). – Maciej Piechotka Dec 24 '10 at 22:54
medion WID 2000 notebook MD41205 – oneat Dec 25 '10 at 12:39
up vote 4 down vote accepted

Be aware that fiddling around with the fan speed can overheat your machine and kill components!

Anyway, the ArchLinux wiki has a page describing how to setup lm-sensors and fancontrol to achieve speed control.

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How would setting the fan to 100% cause components to overheat? – AttackingHobo Dec 27 '10 at 19:53
That was a general notice, if a custom tool/script does not work like intended, the system could overheat. – wag Dec 27 '10 at 20:01

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