January 18, 20251 yr Hi, I bought a Rock 5C with the official fan/heatsink: https://radxa.com/products/accessories/heatsink-6540b/ After installing the Armbian server image, I ran these two commands: ```bash ls /sys/class/thermal/cooling_device*/type cat /sys/class/thermal/cooling_device*/type ``` and found that there is no `pwm-fan`. Then I installed the official Radxa Debian image and ran these two commands again. `pwm-fan` exists and I can make it starts spinning by running: ```bash echo 255 | sudo tee /sys/devices/platform/pwm-fan/hwmon/hwmon*/pwm1 ``` Is the fan module supported in Armbian? If yes, how do I activate it? Edited January 18, 20251 yr by Reguna Posted the incomplete post by mistake
January 24, 20251 yr Hi, I have the same issue, I install the armbian sever image to run omv with the radxa penta sata hat. I can plug the fan on this board too but infortunatly the fan doesn't work on the both plugs.
January 24, 20251 yr Try playing with overlays. It must be some that enables this. armbian-config -> system -> kernel -> Manage device tree overlays
January 25, 20251 yr Author I just reinstalled armbian on the rock 5c again. This time the fan works out of the box. Not sure what have cause this🤷♂️
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