[Bug 107731] radeon (amdgpu) DisplayPort loss of max-resolution on DP monitor (after monitor power saving / idle)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107731

--- Comment #10 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to L.S.S. from comment #9)
> Just tested... it seems if I connect to the monitor directly the problem
> doesn't occur.
> 
> Guess the KVM does play a part in this. However, I still need the KVM as
> I've four PCs connected to this monitor.
> 
> It's not a major issue as switching it back and forth would put the system
> back to the correct resolution, and it currently doesn't have any serious
> impacts. Just that I'm wondering why this problem is only happening on AMD
> video cards and not on nVidia video cards.

Possibly different behavior in the the hw or hw settings on what is considered
a short vs. long pulse for DP.

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