[Bug 101976] glmark2 random blank or background only screen freeze over amdgpu rx550 AMD POLARIS12 due to dpm

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=101976

--- Comment #13 from Pablo Estigarribia <pablodav@gmail.com> ---
(In reply to Marcelo "Marc" Ranolfi from comment #12)
> Kudos for your findings, Pablo Estigarribia.
> 
> I made a workaround available in the form of setting DPM to "Low" on system
> start and calling a script when you need to set it to "High". They can be
> found at https://gitlab.com/snippets/1709853 and
> https://gitlab.com/snippets/1709854.
> 
> I'm against disabling DPM altogether from the kernel driver code. That'd be
> far from ideal.

Thanks Marc!

Is great to have some feedback now.

After looking again into the files of the card0, I have noticed that dpm is
enabled by default! (I have been confused because the file changed its place).


Now it is here:

cat /sys/class/drm/card0/power/control 
auto

uname -a
Linux powers11 4.16.1-300.fc28.x86_64 #1 SMP Mon Apr 9 15:29:05 UTC 2018 x86_64
x86_64 x86_64 GNU/Linux

Also their outpus have same files:

/sys/class/drm/card0/
card0-DP-1/     card0-HDMI-A-1/ device/         subsystem/
card0-DVI-D-1/  dev             power/          uevent

So it is really fixed for fedora 28!! (kernel 4.16.x)

I have been using this for weeks and not noticed this bug!

Also tested glmark2 and some game just to see if something crashes.

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