Mac Mini (M1) 2020, LG UHD monitor flickers on dark colours.

Get the LG27UL550 , been working perfectly now for over a month with no shimmering / flickering.

Disgusting how apple deletes posts they don't want on here. It really makes you think about buying another apple product.

I have this problem with my AOC 2879VF 4k monitor connected via Thunderbolt or HDMI. I replaced the cables with the Apple recommended, $expensive model and the problem persists. Apple replaced my Mac Mini M1 and the problem persists.

I also have an IIYAMAQ PL2390 connected to the same Mini and it has no issues.

Seems like Russian Roullette. I am tempted to replace the 4k monitor, but may end up with another one that isn't compatible.

Interesting to know that it occurs on multiple vendors' displays as I was thinking it was a problem with AOC, since they are cheap.

Hey guys, I don't have the same exact monitor as you guys, but I'll give you a background on my issue:

Flickering was constantly happening, like every hour, triggered usually by web browsing pages with many images/videos.

This almost completely stopped after I used the second HDMI input on my monitor as well as switching cables (using a short 3ft braided cable), but not completely, at this point it didn't happen randomly, only on certain webpages.

So I did some testing and the web pages that I went to that triggered the issue at will no longer did after I changed my scaling settings by going into system preferences, Displays, and 'Option'+Clicking on scaled, and I set the scaled resolution to 2048x1152 (If the issue is only happening with web browsing certain pages for you, then changing the zoom on those pages to 90% also stopped the flickering for me, but considering I've heard the issue happens outside of web browsers, I believe changing the OS scaling setting to be the more permanent fix). Sure things look a tiny bit smaller now, but I have been flicker free for a couple of weeks now. You guys can give it a shot and see if it fixes it. Before anything, make sure you are using short (preferably 3ft or less) certified HDMI cables or else I can assure you, your problem won't be solved. Also, don't assume your HDMI cables are good like I did (they may be literally good for everything else except the M1 Macs.) FYI, I'm using a 3ft Zeskit Maya HDMI 2.1 (8K) cable (overkill for my monitor but it's doing the job).

Yes, I also did very similar tests and with good results, with the difference that instead of connecting a second HDMI port on my UHD monitor, I connected it to another small and simple FHD monitor and then changed my scaling settings by going into system preferences, Displays, and 'Option'+Clicking on scaled, and I set the scaled resolution to 2304x1296 on my UHD monitor. 

It solves the problem 90%, it happened to me again once in a week, very little. At least you can work more comfortably

Can anyone recommend a 32inch monitor for photo editing at around $600 that doesn't have these flickering issues?

I was considering buying a BenQ PD32OOU, does anyone know if this has the same issues?

I have the 32'' UHD HDR Monitor with FreeSync monitor and using with the mac mini M1 and the problem is that the screen takes several minutes to go back on after sleep mode.. I tried other cable which I have and same issue. I changed the screen saver to "Never" and still slow to wake up after re boot or from safe mode.

When I first connected the monitor there was some flickering but after some hours of usage the flickering stopped. I sent a long time with Apple Care and she was very helpful to solve the problem but afterwards told me to wait for the report from diagnostic people and will get back to me in a few days.

For my PHILIPS 328E is red colour more prone to flickering than green. More flickering occurs when YouTube control panel is visible over your testing video. If I put monitor input to DP 1.1 things get better than if it is in 1.2 mode. If contrast or gamma setting pust some shades of red out of play than I can get no flickering at all but then some dark blue can trigger it again. And I am almost sure it is not the contrast issue. Play your test videos in a window and if flickering occurs, try to move the window around the desktop. You should be able to find a sweet spot with no flickering. Strange!!!! Look at my video if you haven't seen it before. I can stop and then trigger the flickering again just by moving a window with "critical" content. https://youtu.be/oK6-UEs60so

Same problems here with my PHILIPS monitor. But I can replicate the problem under Windows 10. But it takes much more effort to find the flicker triggering color. And there is no flickering but static vertical lines on Win10. Running M1 mini on 4K HDR 65” TV causes no problem. So I am confused same as you.

I have the Dell S2721QS and right now have been flicker free for about a month (fingers crossed). I'm using a 3ft Zeskit Maya HDMI 2.1 cable, I also switched HDMI inputs to HDMI 2 (Problem for me happened a lot more often on HDMI 1 for some reason), this had solved the problem 90%. The other 10 percent seems to be taken care of after calibrating a color profile and using that. It seems you've done most of these things, but try using HDMI 2 and perhaps a shorter HDMI 2.1 cable like I did. Obviously, we shouldn't be needing to do any of these things, but hope this helps.

I have the same monitor, and a 2016 Macbook Pro 13 inch.

My experience is by changing the response time from normal to fast or extreme will eliminate the edge flickering when scrolling dark background sites for example I get guaranteed vertical flicker lines when scrolling on Youtube in dark mode.

However when watching videos I still notice some frame, not essentially dark, will cause the flicker, if I paused at the right time it will keep flickering, while the previous or later frame is almost the same image.

I have no issue with the monitor when connecting to game consoles.

Has there been any official (or even unofficial) fixed for this issue? I have M1 Mini and Benq 2780 and I get a screen flicker intermittently I can only describe it as like the brightness of the display wobbling. Have turned off all auto brightness /day / night settings replaced cables no change.

Nothing that I've seen. You'd think 10 pages of comments of people having the same issues would kick off something on their end but it's been crickets from Apple. I REALLY don't want to sell this M1 Mini and go back to Windows but I'm beyond frustrated with the issue.

Same issue here. Mac mini M1 connected to BENQ EL2870U 4K HDR with HDMI (Belkin UltraHD 4K HDMI) and it flickers randomly or shows vertical lines.

It happens even worse when operating Garage Band.

Just switch to HDMI 2 plugin instead of 1 of the monitor, and it seems solved for now.

Same problem, M1 Mac mini with a LG Ultrafine 4k 32UL950-W.

It’s sort of a disaster how poorly this monitor is supported. I have this issue as well as audio issues with the monitor’s built in speakers when using certain voice call apps (FaceTime, WhatsApp, Google Meet) not sure who to blame for all of this.

I have the exact same problem. Flickering and sometimes vertical lines on the dark colours. M1 Mac Mini connected to LG 27GL650F-B new Monitor. For so long and I have read so many comments on the same issues of this Mac MINI since last year.

Why Apple cant solve this problem? It's so annoying, Frustrating and regretful of buying this Mac Mini M1.