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4k iMac display issues

grumpywino

grumpywino

macrumors newbie
Original poster
Oct 5, 2016
29
3
Before I go down the black hole of troubleshooting does anyone have any pointers for this kinda issue? See the attached screenshot, it's the only screenshot I managed to get. It's happened a few times today, a restart puts it right but...I can provide more info but just wondered if this is enough to get an idea of what is up. It's a new one for me. Thanks in advance.
[doublepost=1492016009][/doublepost]A couple more, it's happened again.
 

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  • Screen Shot 2017-04-12 at 17.11.13.png
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  • Screen Shot 2017-04-12 at 17.51.29.png
    Screen Shot 2017-04-12 at 17.51.29.png
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So it could be a 10.12.4 issue as some users are having a range if problems including graphic glitches (some have noted when using youtube etc). Diagnostics test found no issues and I have reset NVRAM. Not sure how to proceed. I can use Time Machine to go back to 10.12.3, or wait and see........
 
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