bug report: 5.8c has issues with 6600 XT fan control in a mixed rig with 6800. 21.10.2 drivers, just sometimes fan is 0% continuously since startup despite min fan speed set to 30 and GPUs go termal stop. Anybody else having similar issues?
Please state which version of windows you are running as that helps.
Either try an earlier version 21.8.2 or the latest 21.11.1
I am running Ubuntu 20.4.2/3 with the amdgpu-pro-driver-21.30 with a rrx 6600 xt and fan control works.
-ttj 65 -fpwm 4
You can try those settings to see if it helps.