https://bugs.freedesktop.org/show_bug.cgi?id=71226
--- Comment #7 from Michel Dänzer michel@daenzer.net --- (In reply to comment #5)
It seems to only show up in apps that use OpenGL and only after a suspend/resume cycle.
If it only happens in OpenGL apps, that indicates a problem in the 3D rendering pipeline.
I'm not using a desktop compositor, so i never see it affect the whole screen like Rafał's screenshots.
Actually, my assumption from Rafał's description was that he's only seeing the problem on one of several connected displays at a time, which would indicate a problem in the display pipeline instead (assuming all displays are showing the same contents or are all updating their contents while the problem occurs). Rafał, is my assumption correct?