Fan speed goes full power briefly when I turn it off.


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Armbian is a community driven open source project. Do you like to contribute your code?

in /usr/sbin/fancontrol you can comment the lines 517 & 518 to achieve what you want.

 

#trap 'restorefans 0' SIGQUIT SIGTERM
#trap 'restorefans 1' SIGHUP SIGINT

 

You will need to stop and restart the service in order for it to take effect

 

systemctl restart fancontrol.service 

 

 

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I assume the original thinking of the authors of fancontrol was, that when the programm crashes/unexpectedly get closed, it does not leave the fans at a low speed and possibly endanger the system. 

The fancontrol does not differentiate between shutdown and exit / kill.

 

And from a system perspective it is much better to have annoying loud fans (but a cool and healthy system) than slowly burning away components while no sound is heard ;)

 

I guess that also answers your second question, if you comment those lines away, the fans wont auto speed up if fancontrol crashes or similar.

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