[Bug 107141] Manual setting of pp_dpm_sclk resets after monitor off/on (rx 480)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107141

dwagner <jb5sgc1n.nya at 20mm.eu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|medium                      |high
           Severity|normal                      |major

--- Comment #1 from dwagner <jb5sgc1n.nya at 20mm.eu> ---
I can confirm this bug - and it is worse than reported. And due to other bugs,
it is not just a cosmetic annoyance.

The report only talks of "monitor off/on", but the
power_dpm_force_performance_level setting is also disregarded after any output
mode change with "xrandr --output XXX --mode YYY", and after any switch between
the console display and X11 (if the console uses another mode, which is
likely).

Also, changing power_dpm_force_performance_level to "manual" is currently the
only method to work around the long standing (1 year) crash bug reported in
https://bugs.freedesktop.org/show_bug.cgi?id=102322

But with amdgpu assuming "automatic" behaviour instead of "manual" after each
output mode change, it is difficult to keep a system stable using this
work-around.

BTW: This is bug is still present in current amd-staging-drm-next.

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