(In reply to Dieter Nützel from comment #34)

> Which I couldn't verify on my Polaris system (with 2 identical HDMI
> monitors) currently.
> With 'low' and 2 identical HDMI displays I get the below under
> 'amd-staging-drm-next':
> 
> GFX Clocks and Power:
>         300 MHz (MCLK)
>         300 MHz (SCLK)
>         600 MHz (PSTATE_SCLK)
>         1000 MHz (PSTATE_MCLK)
>         750 mV (VDDGFX)
>         32.174 W (average GPU)
> 
> PSTATE_SCLK and PSTATE_MCLK do NOT drop and much to high W.
> NO flickering due to 'low'.
> 
> I'll point Alex to this thread.

You need to revert f6505e375fe8 , which "fixed" the flickering bug (but
prevents the lower power consumption behaviour).