How to set PWM fan speed manually?

Question

How can I set a speed for a certain PMW-driven fan manually? I tried LM-Sensors but there it seems the speed can be only set automatically.

Solution 1

this may work ... you could try to edit your /etc/fancontrol file changing all the values for the specific pwm MINSTART, MINSTOP, MINPWM to all the same values .. that should make it a set speed. You may have to change MAXTEMP to a very high value so it doesn't try to spin up higher then the min values. you will probably have to restart it for the changes to take effect

Solution 2

echo 2500 | sudo tee /sys/class/hwmon/hwmon2/fan3_min

hwmon[0-9] and fan[0-9] vary by system.

The BIOS might take over and stop this working, though.

Comments

[Christoph]

Hmm. Nothing like "anytool -value 200" or anything like that? Curious

[John Orion]

sorry .. I'm actually just making a educated guess that what I answered would work .. I haven't really played with it and use variable pwm with my system so never had to try what you are trying