After installing armbian bookworm the fans are always at maximum. Here is how I solved.

 

Trying to figure out what is not working I try to run the related service

systemctl start fancontrol.service

but it does not start. So I check the latest errors:

systemctl status fancontrol.service

I obtain

Failed ...fancontrol.service: Failed to locate executable /usr/sbin/fancontrol

so, fancontrol is simply not there and apt can't find it for installation.

 

I took the old sd card and copied the fancontrol to /usr/sbin/

Than make it executable with:

chmod +x /usr/sbin/fancontrol

than
 

systemctl start fancontrol.service

systemctl enable fancontrol.service

 

As soon as I started the service, voilà, the fan started to... blowing only when needed: problem solved!

Attached you find the fancontrol file.

fancontrol

4 hours ago, Rickyx said:

After installing armbian bookworm the fans are always at maximum.

 

In K6.1 fan should still work, 

https://github.com/armbian/build/pull/5392

while for 6.6

https://github.com/armbian/build/pull/5939

and 6.10, support was removed as it was too much work and no time:

https://github.com/armbian/build/blob/main/patch/kernel/archive/mvebu-6.10/92-mvebu-gpio-remove-hardcoded-timer-assignment.patch.disabled

For me the problem was only the lack of the fancontrol executable, everything else seems to work (although I can't tell if pwm or not).

So I thought I'd share this that might help keep still working hardware from being perceived as non-functional or obsolete: for the moment Armbian (Debian 12 Bookworm, Minimal / IOT) + Omv are working perfectly!

 

Thank you Igor!

Riccardo

I recently decided to reinstall an OS on my helios4, and I went with Ubuntu 24.04. I had a similar issue, but for me the only fix needed was to install fancontrol from apt

 

apt install fancontrol

 

The fans slowed down immediately after it finished installing.