t420FanManager

Manager to disengage the fan of a Lenovo T420 automatically. It will disengage the fan after reaching a certain temperature.

Params:

$1 = Manual high temp
$2 = Seconds between updates in Seconds

Additional Information

Only for Lenovo-PCs (tested on T420)
Only works for Linux
sensors should be available

How does it work

Disengage fan: echo level disengaged > /proc/acpi/ibm/fan
Setting fan to auto: "echo level auto > /proc/acpi/ibm/fan