[Bug 107390] [BISECTED] EDID read failure breaks display mirroring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107390

--- Comment #14 from Justinas Narusevicius <junaru at gmail.com> ---
(In reply to Harry Wentland from comment #9)
> That commit is correct. I don't think we should revert it.
You are probably correct. Some more things i have noticed:

When using Gnome Display Manager on pre
ac916c914c3156e53505e9ea3a9d1495518bf873 kernels my displays would always loose
signal for half a second after login and then come right back up.

Same 'signal flicker' (atleast form users perspective) could be observed on one
display when other was being turned on or powered off.

This no longer happens post ac916c914c3156e53505e9ea3a9d1495518bf873. The
transition form GDM login to desktop is smooth and i can even see the desktop
fadein animation.

> Are you able to take another set of kernel logs from amd-staging-drm-next,
> both with the regression commit and without, with drm.debug=0x4 set both
> times?

Logs are attached. Please let me know if i can do anything more to help.

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