(In reply to haro41 from comment #122)
> In my experience, this issue is related to mclk =
switching and it affects the
> lowest mclk level only.
>=20
> So you guy's can save a lot of power, if you, insteed of switching to
> highest gfxlevel or to disable vsync, just disable the lowest mclk lev=
el by:
>=20
> echo "manual" > /sys/class/drm/card0/device/power_dpm_for=
ce_performance_level
> echo "1 2 3" > /sys/class/drm/card0/device/pp_dpm_mclk
>=20
> If you are building your kernel locally, look in this thread for a dri=
ver
> code modification that works, without disabling the lowest mclk level =
(saves
> a few watt on idle).

Ooh, that seems to have solved it. Haven't had a crash yet, ran The Outer
Worlds for hours (addicting game!), ran FFXIV, ran GW2, no lockups. And, if
there is much of a difference at idle in watt usage, I don't see it on the =
UPS
meter.

Thanks a million!

(also of note, when using the valve ACO, as others have noted, you don't ev=
en
have to do the above to (apparently) solve the problem. unfortunately, that=
 has
other issues, my V64 wont clock up high enough when using ACO for some reas=
on,
so i dont use it).