Comment # 129
on bug 109955
from Wilko Bartels
(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. > > 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 level by: > > echo "manual" > /sys/class/drm/card0/device/power_dpm_force_performance_level > echo "1 2 3" > /sys/class/drm/card0/device/pp_dpm_mclk > > If you are building your kernel locally, look in this thread for a driver > code modification that works, without disabling the lowest mclk level (saves > a few watt on idle). do you have any suggestion to automate this? so far i can strictly run these commands after su. not even sudo works with scripts running these commands. or systemd files.
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