iMac 2020, i7, 5500 XT, half screen Night Shift, half screen not

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Just it Author

Level 1

9 points

iMac 2020, i7, 5500 XT, half screen Night Shift, half screen not

My iMac spec:

iMac 2020

3.8 GHz 8-Core Intel Core i7

8GB 2667 MHz DDR4

AMD Radeon Pro 5500 XT 8GB

The problem is when I change Night Shift.

and change resolution.

Sometimes I got this:

I already saw this twice.

Is this a potential graphic card problem? Thanks guys.

iMac 27″, macOS 10.15

Posted on Sep 9, 2020 8:38 PM

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Answer 1

rkaufmann87

Level 10

148,452 points

Sep 9, 2020 10:15 PM in response to Just it

Please restart in Safe Mode and then retest.

Use safe mode to isolate issues with your Mac

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Answer 2

Just it Author

Level 1

9 points

Sep 10, 2020 9:45 AM in response to rkaufmann87

Thank you. I will do that.

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Answer 3

rkaufmann87

Level 10

148,452 points

Sep 10, 2020 7:37 PM in response to Just it

Please contact AppleCare ASAP. AppleCare Contact Info

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Answer 4

Just it Author

Level 1

9 points

Sep 10, 2020 7:06 PM in response to Just it

I test several minutes in safe mode and can not reproduce the error. Since this error happens randomly, in the normal mode, it does not happen every time.

Tonight, when my iMac is in Night Shift model, I wanted to switch resolution, I get this error again.

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iMac 2020, i7, 5500 XT, half screen Night Shift, half screen not

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