M1 Mac mini display issue

I received my M1 Mac mini on Tuesday and didn't experience any problem until today. Turned it on and noticed some small pink squares moving around my monitor. They would change position as I opened a folder or right clicked on something. After changing the stock wallpaper they disappeared. I also switch my HDMI cable just because, but I've been using this HDMI cable with other devices with no problem what so ever. Hoping it's not a hardware issue as this is a brand new unit. Has anyone dealt with similar problems?

Mac mini, macOS 11.0

Posted on Nov 21, 2020 4:32 PM

Top-ranking reply

vikingsaxonthor

Level 1

4 points

Posted on Dec 18, 2020 7:46 PM

After another week with this problem I have discovered that the issue completely resolves (for me at least) when I move the Mac Mini a meter away from all peripherals (monitor and bluetooth keyboard & mouse). Could this be a proximity interference issue? The pink artefacts at boot-up and during the login screen have completely vanished after this 'experiment'.

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516 replies

Dec 16, 2020 2:02 PM in response to chornbe

i've tested it on multiple screens. I'll try bringing my screen. thanks for the idea!

Boy2323

Level 1

29 points

Dec 16, 2020 3:16 PM in response to marvinfromfra

Big Sur 11.2 beta 1 is out. Would someone kindly try and see if this resolves the pink square issue?

mattd313

Level 1

33 points

Dec 16, 2020 4:05 PM in response to Boy2323

I volunteer you to do it. :)

Boy2323

Level 1

29 points

Dec 16, 2020 4:32 PM in response to mattd313

I would except my mini has been returned due to this issue.

chornbe

Level 1

13 points

Feb 15, 2021 4:37 PM in response to taalvoel

If they’re not appearing in screen shots that means it’s a screen-rendering thing and that means video drivers or buffers, and not in image generation.

iTimod

Level 1

10 points

Apr 23, 2021 7:32 AM in response to fmenard123

Wanted to follow up with everyone. Since I switched to USB-C to USB-C cable to monitor, I have had 0 issues. No pixelation, no black outs. Its been more than 2 weeks now

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M1 Mac mini display issue