going from 10.12.3 to 10.12.4 introduced issues - scrambled popup windows

[Bertus]

SMC reset does not fix the problem for me unfortunately...

[dlgrue]

SMC does not work for me.

Disabling 3D acceleration for my Parallels Windows VM does work, if you can call it that. It's incredibly slow and not a real solution, but it may help point to the root cause of the problem.

@Carlo you said that the DisplayLink team currently can't reproduce the problem after SMC. Can you confirm whether or not you're doing any testing with Parallels VMs, or only native host windows?

[Carlo]

I have not seen differences between running a Parallels VM or VLC or Word or the other affected applications: they're all affected in a similar way at the same time.

With Parallels I've tried a VM with Windows 7 on it.

After the SMC reset I still have no reproduction. We've been trying hard on a few systems but cannot find a way to re-introduce the issue.

Regards,
Carlo

[jonathondw]

So I am running dual 32" Planar PXL3280W monitors with a resolution of 2560x1440 on each monitor. when using the monitors I have issues with all my windows on either screen changing to full white boxes. it normally happens when scrolling a web browser or moving windows around on the screen. I also have issues now since upgrading to sierra 10.12.4 with windows being scrambled this issue seems to occur with applications that are using graphic acceleration or 3d as i see it when using my video conferencing application and Autocad. Prior to the last update from APPLE i did not have issues with either application.

[Bertus]

just checked the auto graphics switching option; it doesn't seem to influence the scrambled screens for me unfortunately, that is on my 2012 non-retina mbp with dual graphics (NVIDIA GeForce GT 650M 512 MB, Intel HD Graphics 4000 1536 MB)

ps, my bugreport is still open after having supplied a sysdiagnosis