M1 Mac mini display issue

I'm honestly surprised it worked for you. Seemed to be a very common issue that if you format the drive and try to re-install, it fails. Apple has a whole document on how to circumvent that. In any case, would you mind checking what your build number is? I think that's what it's called. Click Apple logo in top left, "About This Mac", then click on the version number and it'll change to a build number. What is that on yours? Mine is currently 20B50.

Well crap. The pink boxes are back. I only had one, but that still means there's an issue.

The other problems still seem to be resolved, but more than likely I'm boxing this thing up and returning. Not worth the risk of this possibly being a hardware fault.

Something did fail after the format of the drive, but then it prompted me to login with my Apple ID. This fixed the installation volume and I was able to freshly install Big Sur.

Sorry to hear the pink squares are back, sadly something I was expecting. My build number is also 20B50.

That sucks, I was hopeful that you had found a good solution. I have not tried a fresh install and now it seems like I shouldn't. I still have not noticed an issue today. Like some others, mine is random. I will sleep on it and make my mind up tomorrow about sending it back. Not sure I want to even try another M1 product right now. Thought about getting the MacBook Air.

theres still a chance 11.1 will fix things, which should be coming soon. Here’s to hoping it comes Monday and has bug fixes for this.

One thing I’m hopeful about, I had glitchy graphics problems with my brand new model 2016 MBP. Those were fixed in an update and they haven’t happened since.

I am hoping it is software, if it is hardware, I don't believe I would be able to run Diablo 3 without issues. I can also run Blackmagic, Cinebench, and Heaven benchmarks without issue. Either way, I need to make up my mind on returning it soon.

I’m also tried reinstall Big Sur and you know what, after I used function erase my Mac and boot automatically to the recovery screen I seen this pink artifacts immediately what can tell me what this is not a Big Sur problem it’s looks like a HW issue the best way to explain it what it’s not SW it’s try to turn it off manually using a power button I can’t believe what this pink screen before shut down is normal. And first what I wanna do when I come to the Genius Bar ask them let me see another Mac mini and try to shut it down right away and if I’ll see ping screen on that machine also I’ll will keep listening all explains from the apple worker and keep write the true here until they will solve this issue.

That’s my hope too. I never notice possible HW issues when using the computer. The performance is nice. On my mini the pink squares only return for a moment when I boot/reboot.

Not knowing if it’s a HW issue (that might get worse in the future) is the most annoying part of it all. The return window is slowly closing.

On the 2018 Mini the HDMI is busted after upgrading to Big Sur. Downgrading the OS fixes it again.

The HDMI chip in the M1 mini is the same one. So those problems could certainly be related.

On the 2018 Mini the HDMI is busted after upgrading to Big Sur. Downgrading the OS fixes it again.

The HDMI chip in the M1 mini is the same one. So those problems could certainly be related.

That's weird. I'm not entirely sure that's related, but that could benefit from more exploration when there's time. I wonder if it's a cheap cable and/or and Big Sur's security tightening has something to do with it...? That's pretty weird.

Changing the background doesn't do anything for me. Nothing what's been suggested in this thread does so far.

Because the pink squares only show up randomly during boot (sometimes they don't show up for days) people might think they found a "fix" (for now), but in reality the pink squares will return. You'll see, sadly.

I guess we'll really have to wait on Apple's explanation on this.

Had the same issue , went to Apple they replaces the Mac with a new one, went home and it did the same thing in the same spot as before. Starting to think it is a screen compatibility thing not hardware defect. The first one also had numerous kernel panics can a screen compatibility issue do that?

I happens in only in the first screen you see at set up or after reinstalling the OS ( the magenta rectangles). The kernel panics random mostly just when I was on the desktop without doing anything.

I also had wired glitches in dark mode

Well I’m with ya. My update finished and almost immediately noticed a couple pink squares. Brief, but still showed up.

Im gonna return it and probably wait a couple months to reorder. Will be checking this and another thread I’m following. Good luck you guys in whatever you end up doing and report back if you find any clues. Lol

Also run the update. No luck. I think it's a software issue. When I create an extra (empty) space (see screenshot), and do a reboot, the purple squares are gone on my desktop. I only have the purple spots on the login page. Give it a try.

Hope Apple will come with a real fix soon.

If you're worried about it, return it with all haste, and keep the return numbers up so Apple will take notice.

For myself, I don't feel it's an issue that's going to leave my system broken and unusable. In fact, it's gone away completely - warm boot, cold boot, hdmi, thunderbolt, etc.

I'm on a Mini. It might be more prevalent on one fo the mobiles. Not sure.