[Bug 105177] amdgpu wrong colors with rx460 connected via hdmi

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105177

--- Comment #20 from Reimar Imhof <tuxuser at quantentunnel.de> ---
I've tried drm-next-4.17-wip.
What I've seen is the same as described with the initial bug description:
When monitor is connected via hdmi I get wrong colors. This appears during boot
before the gui (x.org) gets started (frame buffer boot animation). Wrong colors
(sort of violet instead of black) also appear on frame buffer text console and
with x.org gui.
This bug appears with "amdgpu.dc=1" kernel parameter.
While running x.org I've turned the monitor off and on again. This gives
correct colors but the screen resolution goes to 1024x768. So it's no work
around.

What I've seen is: The colors are correct if I run the monitor with a yuv color
model instead of rgb.

One thing seems to be better: Every boot manged to get to the graphical login.
I've tried about 10 reboots.

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