[Bug 111482] Sapphire Pulse RX 5700 XT power consumption

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111482

--- Comment #34 from Dieter Nützel <Dieter at nuetzel-hh.de> ---
(In reply to Shmerl from comment #33)
> (In reply to Dieter Nützel from comment #32)
> > 
> > Hello 'Shmerl',
> > 
> > can you (and the other) please recheck with 'auto', too?
> > I think we have the 'same' problem with Polaris, too.
> 
> Can you clarify please, what scenario exactly do you want me to test? When
> computer boots (or resumes), the value is "auto" by default.

Expected.

> On "auto" after
> boot, idle power consumption is high (30+W).

To high.
With 1 or more identical monitors?
Compare Alex's latest >=2 identical monitor patches.
I get the same even on Polaris (Alex?).

> After resume, with that "auto"
> value, the screen starts flickering,

That is currently the expected 'auto' clk transition bug.
If someone set the clks to low/high flickering can't happen.

> I'll check what power consumption it
> has at that point a bit later.

That's the 'new' interesting part that Andrew, Robert and you find with Navi.
The suspend / resume (with later high/low) 'cycle' which led to much lower
power consumption.

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.

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