[Bug 102646] Screen flickering under amdgpu-experimental [buggy auto power profile]

https://bugs.freedesktop.org/show_bug.cgi?id=102646

--- Comment #58 from tempel.julian@gmail.com --- I've written a small script to only write into pp_dpm_mclk when it's not forced into pstate 2:

#!/bin/bash

if ! cat /sys/class/drm/card0/device/pp_dpm_mclk | grep -xqFe "2: 2250Mhz *" then echo "2" > /sys/class/drm/card0/device/pp_dpm_mclk fi

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Can be restarted every 1s via systemd:

[Unit] Description=watch-pp_dpm_mclk StartLimitIntervalSec=0

[Service] ExecStart=.../watch-pp_dpm_mclk.sh Restart=always RestartSec=1

[Install] WantedBy=multi-user.target

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Seems to do the trick without nasty side effects.

Real fixes for the memory clock change flicker and the not sticking pp_dpm_mclk value would of course be better.