[Bug 89110] Reproducible black screen glitches on DVI monitor with specific image using passive DP-DVI adaptor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89110

--- Comment #9 from Chris Bainbridge <chris.bainbridge at gmail.com> ---
> The new mode works without any glitching.

Sorry that was incorrect! The new mode glitches. Maybe it is different somehow
though.

In the regular mode, if I fullscreen the test image, and do "xrandr --output
HDMI3 --mode 1680x1050", the screen starts immediately glitching. 

If I then do "xrandr --output HDMI3 --mode 1680x1050R" it stops glitching. 

But coming out of full screen it starts glitching again.

So perhaps the new mode alters the timings slightly or something, but the
underlying glitch problem is still there.

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