i own a RX480 and the fan doesnt ever stop spinning. even on idle.
when i check Wattman or any fan senor application. the fan speed displays at 0 yet the fan is spinning uncontrollably.
i have tried controlling it manually through many apps including afterburner. but they dont work.
this problem did go away with one of the driver updates but now it has returned after updating my drivers.
the things i have done already
used amds clean up tool and then reinstalled the drivers
updated my bios