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Display issues with M1 Mini
- Thread starter Saberon2014
- Start date
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M1 Mac Mini. USB-C to DP connection with a Dell 2k monitor. Initially, I noticed the pink squares issue last month during a clean install and it lasted for a few mins after the install. After that, it was all good.
Decided to perform a clean 11.1 install today and the issue has resurfaced. Here are a couple of videos that show show the issue. The pink square artifacts appear to freeze if there is any movement of the cursor but blink when there is no activity.
The tech specs are these:
From the HDMI ports the Mac Mini outputs at 2.0 spec.
That means maximum resolution is 4K @ 60Hz. You can half one metric which then doubles the other, so that means 1440p @ 120Hz.
Remember you would have to check that your monitor’s HDMI ports also run at 2.0 spec (or higher). On my monitor I have two HDMI ports, one port is 1.4 spec and the other port is 2.0 spec.
Display Port using the Thunderbolt USB-C port gives you up to 6K @ 60Hz. Again, dividing one metric, multiplies the other. So 4K @ 75Hz.
I’ve only just got my M1 Mac Mini, I’m running it in 1440p @ 120Hz HDR, via Thunderbolt USB-C to Display Port. Haven’t noticed any pink squares yet. But I’m very new to the machine.
Any update on this issue, or anything suggesting hardware vs software as the cause? Signed, a mini owner who hasn’t seen it yet but is following this thread closely...
I have the same pink rectangles. I was using a DISH-branded HDMI cable (thick, braided, and about 6' long) and only saw it a couple times. Decided to try a shorter, Best Buy-branded HDMI cable and... whamo! Pink rectangles with almost every boot! I'm suspecting the quality of the cable has something to do with it. I'm using a 23" Acer monitor (HDMI, VGA, and DVI ports in back) and it runs at 1080p @ 60Hz. If I go back to the DISH-branded cable and the pink rectangles don't show up as often, I'll have no choice but to assume the DISH-branded cable is better quality construction and, therefore, less prone to video anomalies, like that.
EDIT (12/25/20)
Of course, go figure... this morning, now all I've seen are brief, white rectangles (during the Apple logo bootup), right before the password prompt, but no pink rectangles at the password prompt. Hmm.
EDIT (12/25/20)
Of course, go figure... this morning, now all I've seen are brief, white rectangles (during the Apple logo bootup), right before the password prompt, but no pink rectangles at the password prompt. Hmm.
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I haven't had wake from sleep issues, but I had trouble with the small colored squares horizontally across the middle of the screen. This occurred only on my HDMI screen, not my Thunderbolt to VGA monitor.
The fix for my HDMI screen was replacing the standard HDMI cable with an HDMI 2 cable. I supposed I had the old cable because it worked fine with the same monitor on my old Intel Mac Mini.
The fix for my HDMI screen was replacing the standard HDMI cable with an HDMI 2 cable. I supposed I had the old cable because it worked fine with the same monitor on my old Intel Mac Mini.
I have a M1 Mac Mini, 8 GB / 512 GB SSD, hooked up to a cheap AOC U3277WB 32" display. I didn't get the pink squares or anything like that, but waking up from sleep would be a nightmare, stuttering and lumbering until it got the resolution right or whatever....and then it would be sluggish as hell after that, until I waited minutes for it to settle down. After reading this thread, I instead hooked up the HDMI cable from the monitor to my Cable Matters Thunderbolt 3 dock (connected to the mini via a Thunderbolt cable)...and the problem went away. Poof, vanished. So looks like there's something iffy with the HDMI port or the OS. But if you're having trouble, I hope tihs helps.
I never run anything but the native resolution of the monitor I'm viewing. It's not natural to do otherwise and you probably stress out the monitor, trying for a resolution/refresh rate it wasn't meant to display. Anything higher than native or pushing it beyond the refresh rate it is designed to display at a given resolution, is just asking for trouble.
That is it’s native resolution over a single tile. Each DP connection serves 3840x4320 pixels for a total of 7680x4320.
I have had all kinds of issues getting my M1 Mini to wake a simple 1080P monitor from sleep over bothHDMI and displayport
Returning it today.
I’m not ready to buy a new monitor and I’m just not ready for issues that are only happening for me with these new machines.
I thought it was Big Sur, but I’ve got three other machines around here on Big Sur and none of them are having similar issues at all.
Returning it today.
I’m not ready to buy a new monitor and I’m just not ready for issues that are only happening for me with these new machines.
I thought it was Big Sur, but I’ve got three other machines around here on Big Sur and none of them are having similar issues at all.
Just weighing in with my own situation. I've got the base model M1 Mac mini hooked up to a 1080p LCD at 60Hz via HDMI and I regularly (once or twice daily) see the display turn to static for 5-10 seconds.
I've tried to read through this thread carefully, and it doesn't sound like there's a fix other than requesting a replacement, but someone please let me know if I've missed something. Or if I can provide any additional details, I'm happy to do that as well.
I've tried to read through this thread carefully, and it doesn't sound like there's a fix other than requesting a replacement, but someone please let me know if I've missed something. Or if I can provide any additional details, I'm happy to do that as well.
I tried the HDMI cable to my monitor from my Mac mini and immediately saw the pink squares on the user login screen. Going back to my Display Port cable and the pink squares were gone.
Interesting question, do you see the Apple logo when you boot up your Mac mini? I've never seen it. My monitor is too busy showing its own manufacture logo that by the time it switches to the Mac mini after booting, the Mac is already on the user login page.
Interesting question, do you see the Apple logo when you boot up your Mac mini? I've never seen it. My monitor is too busy showing its own manufacture logo that by the time it switches to the Mac mini after booting, the Mac is already on the user login page.
@someguy,Just weighing in with my own situation. I've got the base model M1 Mac mini hooked up to a 1080p LCD at 60Hz via HDMI and I regularly (once or twice daily) see the display turn to static for 5-10 seconds.
I've tried to read through this thread carefully, and it doesn't sound like there's a fix other than requesting a replacement, but someone please let me know if I've missed something. Or if I can provide any additional details, I'm happy to do that as well.
Does your monitor have a DisplayPort port? My apologies if you said so in a prior post, but I saw the post immediately after your post I responded to where the person saw problems with HDMI but not DispayPort.
Granted, those were the pink squares and not the problem you are experiencing, but trying DispayPort might help if that is an option for your minter.
I'm not sure if this question was for me, but I don't recall if I've seen it or not, to be honest. I can check, my monitor also takes a few seconds to display the incoming signals, and the Mac mini boots really quickly.
It does not, just two HDMI inputs and I've tried using both of them.
I do have an Apple USB-C Multiport Adapter that I was thinking of trying next, but I'm worried that even if I find a workaround (e.g. not using the HDMI output), that won't be a good solution if the issue is hardware-related, you know? ?
I rather dislike being guinea pigs for hardware to determine whether or not configurations work because of the time, expense, and the potential for things not to work after that time and expense. It would be nice if the hardware companies did more testing with different configurations - or do beta testing.
What version of macOS is everyone running? I'm still on 11.0 currently.
Anyways, I reported this issue to Apple Support and was told the following:
A lot of those display issues were fixed in the latest update. You are still on the version it shipped with. I would suggest updating the Mac and see if that resolves it!
I asked for a change log or similar where display issues were mentioned, but wasn't provided with anything. Sounds like a shot in the dark to me, but I will update my OS when I can and report back.
Anyways, I reported this issue to Apple Support and was told the following:
A lot of those display issues were fixed in the latest update. You are still on the version it shipped with. I would suggest updating the Mac and see if that resolves it!
I asked for a change log or similar where display issues were mentioned, but wasn't provided with anything. Sounds like a shot in the dark to me, but I will update my OS when I can and report back.
My HDMI display always wakes to 1080p resolution instead of 1440p. Every time. It''s driving me insane.
oh my god this fixed my wake issue which was the wrong scaling. OH MY GOD THANK YOU. FINALLY. you are amazing
have the same issue with the pink squares on login screen and after login for a while. It started today after 3 weeks of ownership. Dont know if it is coincidence or not, but started after connecting for the first time a brand new magic keyboard and a magic mouse 2. Also have the problem with not waking up from sleep from day 1. Have to force a restart everytime. Any suggestions?