Occasional stuttering that hangs the entire UI on new 16" MBP

embotix

macrumors newbie
Original poster
Sep 10, 2016
28
3
I've had the new 16" for just over a day. I've noticed about a dozen times some random UI hang-ups. They mostly last just a second or two. On one occasion, the entire UI was hung indefinitely (a few minutes). It seemed to be just the UI, since, if I hit Command-Tab, I could see it was switching between apps (the Touch Bar would show different options for whatever app I was blindly command-tabbing to).

This is a behavior I haven't observed before on a 2017 13" MacBook Pro (non-Touchbar).

I'm wondering if this is possibly related to the Touch Bar, T2, or maybe even the discrete graphics? Maybe this is normal when the OS is switching between Intel and AMD GPU?

Has anyone else observed this on their new 16" units?
 

embotix

macrumors newbie
Original poster
Sep 10, 2016
28
3
Happened again, I *think* I captured the corresponding log details in Console.app?

To get the UI to hang (it wasn't a momentary stutter, this hung the whole UI indefinitely, I had to force shutdown), I was moving the Notes app icon from one place in the dock (near the right end) to another (near the left end). The UI hung just as I was letting my finger off the trackpad to let it drop into position.

Screen Shot 2019-12-01 at 10.49.43 AM.png


Is it possible I got unlucky with a bum unit?
 

jerryk

macrumors 603
Nov 3, 2011
5,167
2,533
SF Bay Area
Happened again, I *think* I captured the corresponding log details in Console.app?

To get the UI to hang (it wasn't a momentary stutter, this hung the whole UI indefinitely, I had to force shutdown), I was moving the Notes app icon from one place in the dock (near the right end) to another (near the left end). The UI hung just as I was letting my finger off the trackpad to let it drop into position.

View attachment 880230

Is it possible I got unlucky with a bum unit?
You should google the IntelAccelerator prodding error you will see this has happened for years for various reasons. Hopefully one of threads will help you.
 
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Espen Thuen Hansen

macrumors member
Nov 27, 2019
45
9
This **** happends to me as well. Im the OP on that link. Only micro stutters though, not 1-2 seconds. If you make a new admin account the Intel Error goes away, but the problem is still there. I didnt find any solution to it though by googling it. Let me know if you find a solution to the problem :)
 

matram

macrumors 6502
Sep 18, 2011
265
106
Sweden
If it goes away on another account it must be related to an application or setting.

Did you set up the system from scratch or did you copy over settings from another system.

Have you checked what applications you have set to automatically start when you log in?
 

Espen Thuen Hansen

macrumors member
Nov 27, 2019
45
9
  1. Go to the  Apple menu and choose “System Preferences” and then go to “Energy” control panel.
  2. Uncheck the box next to “Automatic graphics switching
This slightly improved the UI sluggishness for me. The system only use the AMD GPU and shuts down the Intel 630.

Let me know if this helps you ? =)
 
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embotix

macrumors newbie
Original poster
Sep 10, 2016
28
3
  1. Go to the  Apple menu and choose “System Preferences” and then go to “Energy” control panel.
  2. Uncheck the box next to “Automatic graphics switching
This slightly improved the UI sluggishness for me. The system only use the AMD GPU and shuts down the Intel 630.

Let me know if this helps you ? =)
Thanks for the tip. After noticing that these micro stutters continue to persist even after the recent 10.5.2 update, I will try this option to disable automatic graphics switching. Will report back in a day or so.