[Bug 208115] amdgpu (likely) - power management and display connection problems with an RX590 card

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=208115

--- Comment #1 from Adarion from userland (h_mailinglists at posteo.de) ---
Sadly I did not yet find the time for long time tests in my productive systems. 

a quick check:
RX 590 in my FX-6300 based box (Asus M5A78L-M PLUS/USB3)
I did one successful return from DPMS, but that was just one, and different
(newly purchased) monitor (Asus PA24A) hooked up via HDMI.
Kernel was 5.7.x.

idle KDE session: ~69 W (wall, "empty system" just mainboard, CPU, fans, RAM
and one SSD to boot from)
early DPMS off: 66 W
BACO(?): jumps between 62...77 W (there shouldn't have been much of a system
activity, I wonder what's caused the alterations)

"sensors" readings still high, show something around 30W idle.

(The RX 560 however, is down to 56 W in idle KDE, but also shows some variance
during DPMS off/BACO.)

Expected: The RX 590 should be roughly 9-12 W idle, like it's smaller brethren.

Currently running the Zen+ with some old HD 5450, the RX 590 is gathering dust.
(Can't risk crashing my productive system every 10 minutes.)

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