[Bug 105083] Random blinking display

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105083

--- Comment #9 from Öyvind Saether <oyvinds at everdot.org> ---
I get random blue color screen flickering perhaps once every few minutes on
each monitor with redshift and a RX 580 and a 3x4k 60Hz setup with kernel
4.15.3 and amdgpu.dc=1. My initial response was that amdgpu.dc is broken so I
reverted back to 4.14.x and used that until I found this bug and realized it's
the redshift that's badly handled / problematic with the amdgpu.dc code.

This isn't really a redshift bug, just the way it behaves with this new code
since I've used redshift since forever on numerous configurations and this is a
new problem.

The random blue flickering with redshift seems to randomly appear on one of the
monitors, not all or two at once. All do not blink the same time. I can't
really see any pattern either. Every few minutes one of the monitors will blink
blue. Sometimes none of them blink blue for a long time.

Everything seems fine so far without redshift apart from the blue color
spectrum now violently smashing my eyes. My eyes, my eyes! I'll test if
redshift is OK with transition = 0 later, it could be a workaround if it is the
gradual adjustment of gamma/color that causes the flickering.

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