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35a32c5
(Get the code!)
I tested on 22 affected systems with a variety of Intel, NVidia and ATI/AMD chipsets.
On most systems I did three tests:
1- Connecting an external display. In this case the secondary display works fine, without any of the corruption and garbling that were reported previously. Exceptions are four systems with Intel Pineview/N10 graphics chipsets where the system starts performing sluggishly and has trouble refreshing the display with a secondary display plugged in.
2- Rotating (90 degrees to the right) the built-in display with an external display plugged in. The vast majority of systems worked OK in this case, with both displays showing correct, ungarbled video. Exceptions were a few NVidia systems without rotation support at all, and a couple of ATI/AMD systems where the built-in display is corrupted when rotating to the right but works fine when returning to normal orientation.
3- Rotating (90 degrees to the right) the external display. This worked OK in most cases, exceptions being NVidia systems without rotation support, and one Nvidia/nouveau system where the external display shows corruption when rotating.
See this comment for a link to a spreadsheet detailing this and other tests I performed with this update.
https:/
So far Unity 3.8.16 seems to solve this problem generally, and the remaining problem cases *appear* to have another cause. I'll file bugs on those separately.