I'm using the sysfs API with those steps: To switch to manual fan control from automatic, run # echo "1" > /sys/class/drm/card0/device/hwmon/hwmon0/pwm1_enable Set up fan speed to e.g. 50% (100% are 255 PWM cycles, thus calculate desired fan speed percentage by multiplying its value by 2.55): # echo "128" > /sys/class/drm/card0/device/hwmon/hwmon0/pwm1 To reset to automatic fan control, run # echo "2" > /sys/class/drm/card0/device/hwmon/hwmon0/pwm1_enable My RX580 Nitro+ starts beeping a constant high pitched weird noise until I set it back to a fixed value or until reboot. It doesn't happen if start on auto, only after switching to a value then back to auto.
Still present on kernels 4.18, 4.19 and 4.21-drm-next-wip
This is most likely the same issue I encountered some time ago with my RX 580, which is also a Sapphire Nitro+ (Special Edition but that should not matter). I opened a bug report on the kernel bugzilla back then[1]. [1] https://bugzilla.kernel.org/show_bug.cgi?id=199979
Yes, seems like the same issue. It would be useful to know if someone with a non-Sapphire RX580 has the same problem.
Bug also triggers using the new sysfs API's fan1_target+fan1_enable on latest drm-next-4.21-wip
(In reply to bmilreu from comment #3) > Yes, seems like the same issue. It would be useful to know if someone with a > non-Sapphire RX580 has the same problem. MSI RX 480 Gaming X is also affected.
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