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

[bugzilla-daemon at freedesktop.org]

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

Pablo Estigarribia <pablodav at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|glmark2 random blank or     |glmark2 random blank or
                   |background only screen      |background only screen
                   |freeze over mesa3d 17.1 and |freeze over amdgpu rx550
                   |17.3 with radeon rx550 AMD  |AMD POLARIS12 due to dpm
                   |POLARIS12                   |

--- Comment #11 from Pablo Estigarribia <pablodav at gmail.com> ---
Everything works fine disabling dpm on amdgpu. 

Workaround steps: 

edit /etc/default/grub

add amdgpu.dpm=0 to GRUB_CMDLINE_LINUX=

generate new config: 

sudo grub2-mkconfig -o /boot/grub2/grub.cfg

reboot (to test new permanent config is done. 

You will notice now
/sys/class/drm/card0/device/power_dpm_force_performance_level doesn't exist. 

For months I though the problem was somewhere else, and was looking for many
combinations without success, without this workaround I had a very annoying
experience working, playing videos, whatever, because randomly I had freezed
display and had to restart. I couldn't play any game before, now tested with
many games and everything is perfect. 

Could be good to apply this workaround by default? so users doesn't experience
the annoying bug?

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