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

both iMac 2020 (intel) and Mac mini suffers horrible keyboard lag at times so I just connect them back to the lightning cable at times to resolve it.

Mouse does lose connectivity often on the Mac mini and it's annoying AF.

Yes this seems to be a very common issue that also affects all M1 Macs.

Has anyone got any news from Apple though? Do we know for sure that the patch is in the works? I have to admit the lack of any form of an official response is stressful to me...

Thanks for sharing :/ I can confirm after some weeks that mine (EW3270UE) works fine. There are all sorts of problems with those new Macs. E.g. my external SSD did not work via USB-C and via USB-A barely gave USB 2.0 speeds. The company issued a firmware update (Adata) and now it connects but still does not read at proper speeds (Blackmagic read: 500-600 MB/sec and write: 800MB/sec). I also have problems with disconnecting Wifi (occasional) and Bluetooth (occasional, esp. Apple keyboard). Those problems all seem like software problems, but if at least some of them are hardware connected, it remains to be seen.

I have a related problem – every 30 seconds or so the entire screen or a part of it either flickers or is misplaced for a split second. It's hard to ignore it. I'm running MacBook Air M1, Big Sur 11.1, HP U28 4K monitor connected via Thunderbolt 3. Happens both at 30Hz and 60Hz settings.

The monitor is brand new, I'll ask a friend of mine to try with an Intel laptop to make sure it's not faulty though.

That does not sound good at all. I am itching to get the new M1 Mini, but I need two monitors. Currently have two Dell 27" premier monitors as I am a graphics designer and am used to working with InDesign on one and Photoshop on the other.

If the display problems don't get sorted quickly then I will just have to stick with my current setup and forget the Mi Mini.

Many Thanks, guess I will go for that display then! There is stock of the LG27UL850-W in the UK but not the LG27UK850-W which is discontinued , looking at the specs they appear to be the same though , might have to take a gamble on it!

I have this same issue on my HP E24 G4 IPS display with HDMI connection. I don't know when it get fixed. Flickering is happening throughout the four corner side ultimately. and sometimes it get extreme flickering. At the extreme moment I have to restart again to solve this. sometimes restart solve the flickering and sometimes it stays for a while and then calm down. but dark colors screen make it visible again and again. Please Apple fix this ASAP.

I was getting excited as after I installed the macOS 11.3 Beta I did not get the flickering at all and I got my hopes up that the issue was fixed.

However, yesterday after about a week of no flickering I got the dreaded vertical lines and then I got the strobing. Miserable.

something else I noticed in about this on system report . Does this mean the Mac mini is pushing 5k to the display and the display is downscaling it to 4k? Surely there should be a true 4K option for 27" monitors?

BenQ EL2870U:

  Resolution: 5120x2880 (5K/UHD+ - Ultra High Definition Plus)

  UI Looks like: 2560 x 1440 @ 60.00Hz

  Main Display: Yes

  Mirror: Off

  Online: Yes

  Rotation: Supported

  Automatically Adjust Brightness: Yes

I have not had any issues with flickering since switching my monitor to LG 27UL550-W, the only issue I am getting now is that when I wake up my computer from sleep, the scale changes to some awkward stretch which only shows a quarter of the screen on the entire monitor.

For those with the flickering issue, I was considering getting the USB 4.0 hub by OWC to see if this would have solved the flickering issues. Has anyone tried those thunderbolt hubs?

This is unforgivable. My brand new M1 Mac Mini is borderline unusable in my office setup due to this issue. It's been a long time since "it just works" could be relied upon as why we pay for Apple gear (not entirely their fault in a world of malware and security issues) but this is a failure of the most basic functionality. Apple knows, of course, who has bought and registered machines with this fault so it's not exactly great customer service that they have chosen not to acknowledge the problem with the affected customers and give notice of progress towards a solution.

Got the same issue with an older Acer 24" FullHD display. Switched from HDMI to DVI input (via HDMI-to-DVI cable) - issue is still there, but the exact colors at which the flicker happens changed a bit.

Hooked up the Mini to my Samsung TV, couldn't find any issues there, not even the vertical lines in certain tones of grey.

A quick check with a friend's Philips 245E1S/00 didn't show any flicker, either, but I'd have to give it another try to be sure.

Maybe they want to quietly put at a new hardware revision where this issue is fixed.

You'd think that four months should be enough to come up with a software fix, if possible.

But it seems sending in your machine for a repair or replacement right now is pointless.

Btw, im using a borrowed BenQ G2420HDBL FullHD display at the moment, this one seems flicker-free.

Yep, let's just say it as it is: the way Apple is handling this is disgraceful. They barely are aknowledging the issue, meanwhile this thread is exploding.

My guess is that the hardware is messed up in its core and no software update will save us.

I'd love to be proved wrong but it appears Apple doesn't give a **** about its customers so I don't see why they would show up and try to help.

I won't be buying from these crooks again.

Maybe yours is a different issue? I have created an image filled with a "problematic" color and I can 100% reproduce the issue by opening it - but it's only the window the display the image that flickers.

So far it's only dark/grey colors that flicker.