[Bug 201539] AMDGPU R9 390 automatic fan speed control in Linux 4.19/4.20/5.0

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201539

--- Comment #54 from michael (lkbugs at deegan.id.au) ---
It seems that since kernel 5.6 (or at least Debian's version thereof), I no
longer need to fiddle with
/sys/class/drm/card0/device/hwmon/hwmon3/pwm1_enable. The default value (1)
seems to do the right thing now. Progress!

Mind you, lmsensors is still unable to report fan speed, and gives nonsensical
values for crit/hyst temperatures. I have a feeling that further improvements
to power management may be possible too.

amdgpu-pci-0100
Adapter: PCI adapter
vddgfx:       +1.00 V  
fan1:             N/A  (min =    0 RPM, max =    0 RPM)
edge:         +73.0°C  (crit = +104000.0°C, hyst = -273.1°C)
power1:       58.21 W  (cap = 208.00 W)

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