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

apple wont help you or reply to the issue but if you want to fix the issue where you cannot see past the Siri logo each time you login goto settings > displays resolution > scaled move the scaled setting all the way to 'more space' far right , let the screen update, then move it back to your usual setting. I do that every time I wake from sleep. Disgusting its still not fixed.

Hello all, I came across this thread as somewhere the text matched M1 Mac mini. I too have had the problem of screen flickering and/or cutting out and coming back on occasionally. Someone suggested a different cable. I did that and it got worse. That's when I knew they were on to something... it took me going through three different HDMI cables, but on the last one I seem to have a stable video signal with no dropouts. Not sure why it's sensitive but hope this helps someone - be persistent or willing to buy a new one?

I have exactly the same problem with the new macbook M1pro 16 inch.

After investigation, it turned out that the Led lighting in my room was the cause. When the light is off I have no flickering, but when I turn it on the flickering occurs again.

Now I use for Teams, WhatsApp video and Facetime ,a normal lamp at night and that works well.

Kind regards

Ah me too! I found that if I mirror the laptop display, and then turn mirroring back off, that the screen will re-size correctly.

I just ended a chat with a Support Engineer, we tried different cables and adapters with similar results, but the flickering never returned. HDR settings in 4k Monitor are lost almost every single time that MBP is on "sleep" and wakes up, restarted PRAM, Safe Mode, etc. No luck. In the end apparently, there's a patch coming up for this; there's no cable or hardware-related problem but a BigSur one; no idea when it will be out.

i installed the update this afternoon. I’ve got a Mac mini did anyone get a weird flashing on the screen like this.

I thought it had bricked itself! It stopped after a couple of minutes. The flickering now seems fixed and no more Bluetooth issues.

I have had the same issue with my M1 Air. 16gb ram, just got it a week ago. Initially connected to an HP z27n @ 2560x1440 over a DP 1.2 cable usb-c to usb-c. The laptop monitor started flickering and the resolution was off (couldn’t see date in upper right corner). After talking with support I was advised to try another cable, preferably apple branded. I bought the Thunderbolt over usb-c cable from the apple store. I plugged it in today and from the get-go my external monitor has intermittently gone black for a few seconds, then it comes back. Talked with support again today, advised to try safe mode, do all the troubleshooting steps on the site etc. obviously hard to troubleshoot an intermittent issue on the line. Very disappointed as I really like this laptop, but the external monitor is critical for my work so I’ll have to return it if I can’t get this problem fixed.

For me this happens depending on the monitor connected. Using my Mac mini M1 (Big Sur 11.2.1), this is what I see:

• LG UltraFine 5K (the older model from 2016) TB -> TB. => no issues.
• Sceptre U279W (4K 60hz) over DisplayPort -> TB => no issues
• Lenovo A19270QY1 (1440p 144hz 27") over DisplayPort -> TB => picture goes black and then comes back a couple times per minute

So it does look like a real issue, but whether it occurs depends on the external display being used.

One of the latest macOS Updates seems to have fixed it. I don't experience flickering of the internal screen anymore.

Similar issue, built-in display flickering. Connected to a Dell monitor via HDMI dongle. Dell monitor shows no issues. MacOS 11.1, MacBook Pro 13" M1, 16GB RAM. Built-in display at native resolution. Haven't seen it flicker yet when not connected to external display.

I have the exact same situation, for me happens when the MBP is on "sleep" and then I wake it up, resolution is lost, until I unplug/plug the external display again. And today the flickering started at the same time.

Same issue. Flickering is fairly consistent, though, intensity is not. I'm also getting terrible ghosting from my M1 mini.

This was not an issue on my docked 13" Intel MBP with the same monitor (Dell 27" U2720Q via USB C). I've tried different cables and may different settings -- on my Mini and monitor -- with no avail.

This issue needs to get fixed. This seems like an issue that is beyond the realm of "Early Adopters" and is very wide spread. I'm just hoping this is a software issue that can be fixed.

I want to let everyone know that after switching my Satechi Slim Multiport with Ethernet to the bigger Multiport v2 my HDMI issue has gone away. It's hard to tell if my Slim Multiport was faulty or if there is some compatibility issue.

(I was having the screen turn black for a few seconds every 15 minutes or so, screen is a Dell U2414H)