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I just did a fresh install of Ubuntu 17.04 and there are is a weird phenomenon occurring on the right side of my screen (Dell P2715Q driven with Sapphire Radeon 6950) when running at 3840x2160. If I put the resolution at 2560x1440 it looks normal, but I'd prefer to be running at the full resolution. The glitches appear to shimmer and respond to movement. A screen shot of the screen looks normal, but a picture taken with my camera shows the problem.

Picture

I'm using the open-source drivers and I've run

apt-get update && apt-get upgrade

The monitor works fine with Windows 7 and 10 (same hardware) as well as MacOS (2013 Mackbook Pro).

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I recommend installing an AMD proprietary video driver. – Dante Jun 15 '17 at 17:37
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@Dante The proprietary video driver is no longer supported in 17.04 – wklock Jun 15 '17 at 18:59
    
@wklock did you manage to resolve this? I'm having the same issue :/ – rvalue Jan 6 at 10:11
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@rvalue I did not. I used a different graphics card (GTX 1050), and it works fine now. Really not sure what happened here. – wklock Jan 6 at 23:38

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