going from 10.12.3 to 10.12.4 introduced issues - scrambled popup windows

Carlo · 04-06-2017, 04:30 PM

Thank you pmoston,

We have quite a few bugs duplicate of 26394372, it looks like a catchall for rendering issues on virtual screens.

We have found a possible workaround that worked in our lab: resetting the system management controller.
I suspect an inconsistency between GPU settings between SMC and OS at the time of upgrading to 10.12.4.

In any case I'd suggest to try this workaround. The instructions are in https://support.apple.com/en-gb/HT201295

Please let me know if this helps for you, in case we'll publish the workaround in our FAQ.

Kind regards,
Carlo

otech · 04-07-2017, 01:43 AM

Quote:

Originally Posted by Carlo

Thank you pmoston,

We have found a possible workaround that worked in our lab: resetting the system management controller....

Seemed to make it a little better, but still have corruption of the some windows...

ourzoo · 04-07-2017, 03:34 AM

I was hopeful when I logged in and saw your suggestion Carlo. I reset per the instructions and nothing has changed unfortunately. Still messed up as before. Prior I could have Parallels open in all 3 displays. My laptop and the 2 external monitors. Not an option anymore. Now I'm limited to the original 2 (laptop and the one external which is Thunderbolt to HDMI. I can however run any Mac programs and run Chrome in the 3rd window being powered by Display Link.

pmoston · 04-07-2017, 07:41 AM

Hi Carlo,
the fix was only temporary. After about 20 minutes of working the screen was corrupted again. (Parallels on an external monitor in full screen).

My console (console.app) is being flooded with messages

standard 09:39:56.206890 +0200 WindowServer No matching context for device (0x7f991b7123b0) - disabling OpenGL

This only happens with the Display Link hub attached. Any connection?
Maybe the others can check if their console also exhibits the same behaviour?
Regards
Philip

Carlo · 04-07-2017, 08:02 AM

Thank you for trying this out.

At the moment the SMC workaround is still working for us so we no longer have any reproduction in our lab: identical systems work well too.
We have uploaded all information to Apple: we have sysdiagnose for all configurations. Our bug ID is 31495935.

The WindowServer error message may be related in some way but it's now new.

pmoston, it would be fantastic to understand in which circumstances the issue comes back if you can see any pattern. We'll keep trying on our side too.

Kind regards,
Carlo

tjgrant · 04-07-2017, 10:27 PM

I've found for Parallels, if you go to "Configure" on the virtual machine, select the "Hardware" tab, go to "Graphics", click "Advanced Settings" and turn OFF "3D acceleration", that this seems to resolve issues for Parallels with a DisplayLink device. You can only make this change when the virtual machine is OFF, and you must make this change for each virtual machine.

tjgrant · 04-07-2017, 10:33 PM

That said, I would really love to see a fix for VLC, as I tend to have this on the DisplayLink screen.

Disabling "hardware acceleration" in their preferences screen doesn't resolve issues there; I suspect the setting actually doesn't work.

If I had a guess, it would be any application using 3d hardware acceleration are the applications having issues.

04-07-2017, 07:41 AM	#4
pmoston Junior Member Join Date: Mar 2017 Posts: 5	Only temporary Hi Carlo, the fix was only temporary. After about 20 minutes of working the screen was corrupted again. (Parallels on an external monitor in full screen). My console (console.app) is being flooded with messages standard 09:39:56.206890 +0200 WindowServer No matching context for device (0x7f991b7123b0) - disabling OpenGL This only happens with the Display Link hub attached. Any connection? Maybe the others can check if their console also exhibits the same behaviour? Regards Philip

04-06-2017, 04:30 PM	#1
Carlo Mac Team Join Date: Feb 2009 Posts: 606	Thank you pmoston, We have quite a few bugs duplicate of 26394372, it looks like a catchall for rendering issues on virtual screens. We have found a possible workaround that worked in our lab: resetting the system management controller. I suspect an inconsistency between GPU settings between SMC and OS at the time of upgrading to 10.12.4. In any case I'd suggest to try this workaround. The instructions are in https://support.apple.com/en-gb/HT201295 Please let me know if this helps for you, in case we'll publish the workaround in our FAQ. Kind regards, Carlo

04-07-2017, 03:34 AM	#3
ourzoo Junior Member Join Date: Sep 2015 Posts: 13	I was hopeful when I logged in and saw your suggestion Carlo. I reset per the instructions and nothing has changed unfortunately. Still messed up as before. Prior I could have Parallels open in all 3 displays. My laptop and the 2 external monitors. Not an option anymore. Now I'm limited to the original 2 (laptop and the one external which is Thunderbolt to HDMI. I can however run any Mac programs and run Chrome in the 3rd window being powered by Display Link.

04-07-2017, 08:02 AM	#5
Carlo Mac Team Join Date: Feb 2009 Posts: 606	Thank you for trying this out. At the moment the SMC workaround is still working for us so we no longer have any reproduction in our lab: identical systems work well too. We have uploaded all information to Apple: we have sysdiagnose for all configurations. Our bug ID is 31495935. The WindowServer error message may be related in some way but it's now new. pmoston, it would be fantastic to understand in which circumstances the issue comes back if you can see any pattern. We'll keep trying on our side too. Kind regards, Carlo

04-07-2017, 10:33 PM	#7
tjgrant Junior Member Join Date: Apr 2017 Posts: 4	That said, I would really love to see a fix for VLC, as I tend to have this on the DisplayLink screen. Disabling "hardware acceleration" in their preferences screen doesn't resolve issues there; I suspect the setting actually doesn't work. If I had a guess, it would be any application using 3d hardware acceleration are the applications having issues.