M1 MBP Screen Flickering, External Monitor Crashing, & Unable to Connect to Apple Watch

If I'm following this thread correctly it is a software issue, that has been known since Big Sur was in Beta. So I'm hoping it will get fixed with a software update in the near future.

I have the same setup (Mac Mini M1 and BenQ EL2870U monitor) and get the occasional flicker on an HDMI connection, bought a DP cable hoping it will fix it. I suspect not.

for me helps only restart :( i tried many times to do like you say.

Other way I've found to solve this is closing the lid and opening it again; but then the configuration for the external monitor, when the lid is closed, it's lost.

What helped remove display flickering (some of the surfaces were flickering) with my Mac Mini 2020 was installing a ferrite choke (ferrite bead) on the Mac end of the Mac Mini power cable.

I have the same problem. Upon investigation, it turned out to be the LED lighting in my room. In daylight I didn't have the problem.

I'm having the exact same issue. I just got my MBP today, and after I plugged in an HDMI to connect to my TV, the screen on my MBP will occasionally flicker. I'm guessing this is just a bug with the new software, or with Google Chrome, as it only happens when I'm in Chrome. It's not a huge issue, as it only happens when I'm plugged into the HDMI.

Yes my M! MacBook Pro is doing the same flickering, but it's on the Laptop screen not my external monitor. It started about 3 days ago, but it started when I wasn't connected to my external display. It continued after connecting. it goes away if I move the screen after some time, but it's clearly an issue of some sort with the machine. In my case, the external Monitor is always fine it's only the laptop screen that flickers.

Does anyone else have this problem??? My Mac is running Os 11.0 Big Sur. And my computer will crash. For a millisecond it flashes pink then the screen goes black. The Apple logo appears and I’m brought to my log in. This has happened about 20 times since I got my MacBook Pro M1 for Christmas literally yesterday!!!

Same Problem Here.

External Dell U2414H

Flickers quit often and occasionally goes black for a couple seconds. This can't be good for the monitor.

My watch unlocks the computer.

Annoying. I'm using BigSur 11.1

Same problem. Mac Mini M1 16GB, from rear Thunderbolt 3 (USB-C) port straight to a BenQ EL2870U display (3840x2160) Display Port. Tried various resolutions, with/without HDR, etc. — exact same vertical lines and flickering once there's enough 'dark areas' visible on the screen. Other forums have screenshots, they all match exactly the issue we're having here. It was NOT fixed by Big Sur 11.1, I am on the latest updates, did nothing.

I have the MacBook Air M1, connecting external Samsung monitor via USB dongle, MBA screen flickered when returned from sleep mode with external monitor disconnected, Chrome screen scaling issue exhibited, Apple Dock disappeared on MBA screen.

New MBA 16gb Ram 8core GPU here, connected to my Dell U2414H via HDMI on Satechi USB Hub. (It is the slim one with ethernet port)

I'm having a similar issue, external display goes black for 1 second every few minutes. It also goes completely black sometimes and the only solution is to turn it off and back on. Cable tested, hub also tested on a Windows machine, also tested plugging/unplugging power cable on laptop. Hoping this is a software issue that can be eventually resolved as this machine is a perfect math for my workflow otherwise. I updated to Big Sur 11.1, problem is still there.

This is a nice idea but didn't resolve for me.

Still getting shifts with vertical banding, etc.

Much more stable over hdmi at 30hz, so have switched to that. Most problems with thunderbolt to mini-dp...