We talk about test of different parts.    It was orginal one topic but split. The other is https://forum.armbian.com/topic/12936-how-to-control-fan-on-rockpro64   @deathisunknown Which kernel are you using? 5.3.xxx?   Until this week end, I was using Ayufan's kernel in order to have ats working (I have the nas box with a harddrive so I want to have some ventilation). I've switched to Armbian's current kernel (5.3.xxx, I don't remember the exact subversion) and notic