[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

Michael (lkbugs at deegan.id.au) changed:

           What    |Removed                     |Added
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                 CC|                            |lkbugs at deegan.id.au

--- Comment #35 from Michael (lkbugs at deegan.id.au) ---
I discovered a workaround that works for my R9-290 and Debian 5.3.0 kernel:

  root at joyola:~# echo "2"
>>/sys/class/drm/card0/device/hwmon/hwmon3/pwm1_enable 
  root at joyola:~# echo "0"
>>/sys/class/drm/card0/device/hwmon/hwmon3/pwm1_enable 

pwm1_enable will still be 2 afterwards, but (after spinning the fans at max for
a bit) automatic fan control works for me. I also have to do the same
pwm1_enable prodding after resuming from suspend.

(If it matters, I boot with radeon.cik_support=0 amdgpu.cik_support=1
radeon.si_support=0 amdgpu.si_support=1 amdgpu.dc_log=1 amdgpu.gpu_recovery=1)

I still have the same brokenness as reported in comment 14 though.

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