[Bug 195743] Screen flicker and instability on hdmi monitors with AMDGPU, EDID problems

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=195743

--- Comment #3 from keziolio123@gmail.com ---
Thanks for the reply 

Yes I did update the kernel, along with the rest of the system (I use
ArchLinux).

The problem seems to be getting worse, from linux 4.7 to 4.10 and git, with
latter versions the "screens off and on" flicker seems to be cycling and
generally more unstable (on 4.10), instead of an "one shot" glitch that I can
fix with xrandr (on 4.7). This is why I think it's a kernel issue.

Unfortunately for now I can't easily bisect the kernel version, as I use btrfs
and it breaks if I load an old kernel. I'll try later with a live system but
that's going to take some time.

I have 3 monitors, two of them HDMI and one DVI, only the HDMI ones are
affected, even if I found breakage on the DVI one some times.


The problem does not occur in wayland, only xorg is affected. But I tried older
versions of xorg and the problem persists (so I guess it's not a xorg issue)

I tried to force the edid with the kernel command line, but the problem still
occurs, the monitors do shut down (they are not detected) or flicker

I don't really know what to try now, and I have not found a workaround yet,
disabling udev has no effect.

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