Alexey, pls see inline > Wiadomość napisana przez Alexey Charkov <alchark@xxxxxxxxx> w dniu 08.07.2024, o godz. 09:59: > > Hi Piotr, > > On Sun, Jul 7, 2024 at 9:32 PM Piotr Oniszczuk > <piotr.oniszczuk@xxxxxxxxx> wrote: >> >> Heiko, Alexey, >> >> After some more tests: is varying fan-speeds working stable for you? > > Yes, in my testing on Rock 5B it's been stable. > >> In my case - 1 per few reboots results with board enters state with: constant full speed and no any reaction for cpu temp. >> In such state - I need multiple hw poweroffs (remove usb-c plug) to get fan-speeds working again. >> When board is such state - all seems to work ok (frequency scaling, etc) except fan is constantly full speed… > > One thought: could you please check which thermal governor gets > loaded? I used stepwise in my testing. > this is from system when - after boot - i have constant full speed of fan root@myth-frontend-3614ae04f23f:~ # cat /sys/class/thermal/thermal_zone0/policy step_wise root@myth-frontend-3614ae04f23f:~ # cat /sys/class/thermal/thermal_zone1/policy step_wise root@myth-frontend-3614ae04f23f:~ # cat /sys/class/thermal/thermal_zone2/policy step_wise root@myth-frontend-3614ae04f23f:~ # cat /sys/class/thermal/thermal_zone3/policy step_wise root@myth-frontend-3614ae04f23f:~ # cat /sys/class/thermal/thermal_zone4/policy step_wise root@myth-frontend-3614ae04f23f:~ # cat /sys/class/thermal/thermal_zone5/policy step_wise root@myth-frontend-3614ae04f23f:~ # cat /sys/class/thermal/thermal_zone6/policy step_wise root@myth-frontend-3614ae04f23f:~ # cat /sys/class/thermal/thermal_zone7/policy dmesg: https://gist.github.com/warpme/5d12df382ce353205c6ff0c37f5b4791 lsmod: https://gist.github.com/warpme/1c74b3be2cabe85366f227594d8a3e90 pls let me know is there anything else i can provide to investigate this issue...