Big Sur 11.1 External Display Issues!

I was fine in 11.1, but now the supposed *fix* in 11.2 broke me. Every once in a while I get a screen freeze (but computer is still running, sound still plays, I can even click on any misc UI element and hear feedback if I can guess where to click). Unplugging the USB-C connection to the display and plugging it back in fixes it each time.

On a Mac Mini M1 using a Dell U3415W (3440 x 1440) display connected via USB-C to Mini Display Port.

Not sure how Apple managed to unsolve sending pixels to a display w/ Big Sur.

This is my first Apple Mac Computer (after using iPhones, iPads for over 10years now). I bought the Appe Mac Mini with M1 4 weeks ago. I have a Samsung ultra-wide Display with the native display solution of 5120*1440px.

1.) With 11.0 and 11.1 I had the bug that I can only this display with 3840x1080. Not looking good.

2.) Using a USB-C to Display Port adapter I wasn't able to use the PBP-Mode of the display. I had a picture but the monitor always wrote the message that I had to check the signal cable,... (Big Sur 11.1)

3.) With HDMI everything works fine but not the native display solution

4.) I ordered the second new cable USB-C to Display Port. This one works with the Picture-by-Picture Mode. Same day update to Big Sur 11.2,...

5.) Ohh, everythings works fine. I was happy. Native screen resolution, PBP-Mode,...

6.) Reboot

7.) Black screen - second USB-C,... Display works again

8.) Reboot

9.) Black screen - no way to get the display working with the USB-C to DP cable, only HDMI works

10.) I'm total frustrated

@Apple: You write that this device supports a display up to 6k - sorry - in the moment this is wrong! Sorry guys, fix this or you get the device back,...

I complained many times and agree with you: everyone who is active in this thread MUST do that and call in the customer service as well.

I read many posts here finishing with “apple please fix that”, but guys, I tell you a thing: APPLE DOESN’T READ THROUGH THESE DISCUSSIONS.

This is just useful for us to share some workaround but, as it is an OS big, Apple must be informed and contacted directly or nothing moves.

I don’t know why many people are not experiencing the issue, ** ai assume that so many are just silent

I have the same issue, Big Sur 11.0 was fine but as soon as I "updated" to 11.1 neither of my 23" Cinema Displays monitors worked. They will work with my wife's MacBook Air (not running Big Sur).

To be fair, I've had consistent contact with an Apple advisor up until two weeks ago. He told me that the engineering team expected 11.2 would solve the problem, and to have patience. 11.2 did not solve the issue, and this advisor is no longer reachable. I have a new advisor, as of Feb. 3. I'm supposed to hear more on Monday, February 8.

Incidentally, I had to upgrade my older MacBook Pro in December 2019 as I needed the 64-bit capability. Had to return it as it only had two ports (this is the Pro machine?) and Apple advised against using multi-port adapters. I ended up buying the 16" MacBook Pro which at least has 4 ports. The monitors have three cords in an umbilical cable—USB, Firewire, and DVI. In the past, I've only connected the DVI output, adapted to USB. Apple was able to "recognize" the ports were connected when I had both the USB and DVI cables adapted and attached, but neither monitor came to life.

I'm so used to Apple being "plug and play," or "plug and work." What has happened?

Its not just 16inch MBP.

I have a new 13 inch M1 MBP. I brought a BenQ 32inch monitor PD3220U with Thunderbolt 3 and I cannot even use it. The monitor works find with my Dell work computer. I haven't tried any of these workarounds yet. I guess I'll go get an HDMI cord and see if that works for now.

Still no improvement with the 11.2 the promised 4K bug is not solved eventhough listed

macOS Big Sur 11.2 improves Bluetooth reliability and fixes the following issues:

• External displays may show a black screen when connected to a Mac mini (M1, 2020) using an HDMI to DVI converter

Instead in addition the not-loading the battery while connected to the display is back - and that on my 16" MacBook Pro

macOS Big Sur 11.2.1 addresses an issue that may prevent the battery from charging in some 2016 and 2017 MacBook Pro models.

scheduled for install tonight - however my mac is 2019 ---- AAAAAHHHHRRRRRGHHH - don't expect a fix

Just shows that Apple should in fact be aware, so why no fix?

11.2.1 beta and 11.3 beta did not fix the issue for me when I tried them a few days ago. I have not tried the final release as I've had to downgrade to Catalina 10.15.7 in order to get any work done.

2019/2020 Macbook Pro 16"

Monitor is LG32UD99-W connected via USB-C

The LG 32UD99 uses DisplayPort 1.2 only from what I have read. I have been using a USB-C Cable to HDMI as a patch until Apple can get off their a*&$s and issue the fix. The resolution is OK but my dual (32UD99) monitors randomly blackout for a second frequently. It's a patch "bandaid" for now so I can get work done. This issue is going on 60 days!

My Apple Cinema displays (DVI, Fire Wire and USB outputs) still don't work with Big Stupid, oh, my bad, Big Sur 11.1 or 11.2.1.

Initially, Apple gave me a good amount of attention. But now, not so much.

I plugged the monitors into a MacBook Air and they still work.

I've noticed comments about changing monitor settings, but I don't think I have that option.

Maybe they're not the smartest monitors in the world, but they work, especially for my needs.

Quick Fix that worked for me!!!

I have a Quick Fix for the 11.1 or 11.2 External Display issue. Purchase a long Belkin cable directly from Belkin.com, (HDMI Lightning connector). I did and it is now working for me. Careful though, I first purchased the same cable through the Appstore and it did not work. Belkin replaced it and that one did not work. I contacted Belkin directly and they determined my cable was faulty and offered to send a third one. I agreed but I insisted that they pretest it at their end before sending.

Same issue here with MacBook Air with m1, and HP z27n G2. I've tried a pair of usb-c to usb-c cables, and also a usb-c to DisplayPort converter, and a lot of different settings of monitor and a many recommendations from various forums. Nothing worked. My Nvidia 1070 in a desktop PC runs that monitor over DP excellent, so the monitor is OK. I see that only a power delivery over usb-c to usb-c cable is working, when I connecting my Mac. I've also updated to Big Sur 11.3 beta 2, and issue is still here.

I don't think they are doing anything about it... I just got my brand new mac mini with the M1 chip back from the not-so-"genius" bar and been told there is absolutely no issue with the device, even though when I have it connected to my Samsung Odyssey G9 monitor, there are issues with the video output signal as in every time it starts/restarts/wakes-up, doesn't sent the video signal to the monitor, so I am getting the "No Source" message....unplugging and replugging the USB-C to DisplayPort cable solves the issue until the next start/restart/wake-up. Of course, Apple blamed it on the G9 monitor, but the same monitor works well with my 16" MacBook Pro...then I have been told it may be the cable...so I told them again, it works with my 16"MBP...then they said "settings", and so on, until I have been told it is a new chip, with a new technology and this is what's happening with "revolutionary" technology...

In my opinion this is unacceptable, we are not testers, we PAID for the products.

Apple is just ignoring us...I wonder for how long?

I saw posts here from 5 months ago stating these issues and those not-that-competent engineers and software developpers were not capable of fixing this issue...

I have tried two different hubs and going direct and it makes no difference, my external monitor still doesn't work. 11.2 has not fixed the problem. There is no workaround which works for everyone. Hopefully, eventually Apple will fix this bug. In the meantime my productivity is decreased by not having use of my external monitor. As has been said before, WTF, we're all paying customers, not guinea pigs to try our BETA operating systems with MAJOR bugs. Shame on Apple for such extremely poor customer support -- and just not caring...

Every time they release a new update that doesn't fix it, I am submitting a new report now. If we all keep doing it, hopefully they will finally fix it by 11.3 is released.

People need to make sure they say it didn't happen in the first version of OS 11 or Catalina (or Windows Boot camp), so Apple don't just write it off as a problem with your adapter/monitor.

I’ve been working with a senior advisor for a week and a half now since I have AppleCare. Nothing had worked so far. Now they’re telling me to create a new volume on my hard drive and install the OS on that and see if it will connect to my external monitor. Is that even worth doing at this point?