[Bug 109246] HDMI connected monitors fail to sleep and instead turn back on when amdgpu.dc=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109246

--- Comment #12 from Michel Dänzer <michel at daenzer.net> ---
(In reply to tme from comment #9)
> Setting amdgpu.dc=1 on 4.15.18 and 4.16.18 does not reproduce the problem.
> It does, however, reproduce on 4.17.19.

Can you bisect between 4.16.18 and 4.17.19?

(I see some HPD filtering related changes between them, Nicholas / Harry maybe
you can take a look if anything jumps out?)

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