Big Sur 11.1 External Display Issues!

I've tried every solution suggested on this discussion board (except reinstalling Catalina) and nothing has worked. Unfortunately, apparently this issue isn't happening to enough people for Apple to be concerned. I wish there was a way to get Apple motivated to fix this problem which is a huge problem -- for me and others. As someone else said, who doesn't use an external monitor when working these days?

Facing the same issue. I have the Targus USB-C dock: https://us.targus.com/products/usb-c-universal-dv4k-docking-station-with-power-dock180usz?variant=14359411753018&gclid=Cj0KCQiAmL-ABhDFARIsAKywVacZpf7kzhgZxHqPmRWFN5PimN0dh7Nr6ioSRpyn_DfHPjJxQrdMg0AaAihfEALw_wcB.

I connect my 2019 Macbook 16in (ver. Big Sur 11.1) to the dock via USB-C -> USB-C (so both ends are usb-c) connection. The dock has additional DP ports connected to my monitors and it does not display or even register that other displays are connected, but the Macbook does register that it is being charged through the same dock.

Same dock works with other machines, although it is worth noting they are not apple machines (i.e., Lenovo ThinkPad p15s).

I spent nearly an hour trying to chat with support. Twice the chat ended due to a « temporary system issue ».

The response was the standard

1. reset NVRAM
2. reinstall OS.

I pasted the link to this thread in the chat and I am sure they ignored it.

I tweeted from the cooltoystv official account and my account to get this started. Beachstreetnews is next.

Just because I have nothing better to do with my day, I’ll stop working on Fan2stage.com and CoolToysTV.com and reinstall the OS. Maybe I’ll call my dentist and get a root canal at the same time so I don’t notice the pain.

Yes Apple the least you can do is have someone leave a reply to these 19 pages full of people experiencing these issues and wasting their time and energy on this random monitor issue. I have spoken to Apple Support (Netherlands) and it wasn't even on their radar, just gave me the good old reset SMC/PRAM advice that didn't work and after some other random stuff it started working again. Please take these complaints seriously, it's not as if we haven't paid enough to use your hard- and software! God **** this is annoying.

same issue - I was thinking it was my new monitor so it's never worked for me - sometimes it just does but mostly 1080 highest on a 4k display

BenQ PD2720 with thunderbolt 3 to MacBook Pro 16 2019

really frustrating how is this not solved yet

I'm having the same issue. I have the MacBook Air 2017. I have been working with Apple Support for the past week and a half to get this resolved. They are escalating it (hopefully) to an engineer with this next call.

Has anyone had any luck with this? I want to bring it up during the call to see what they have to say about it.

I've been having the same issue - since downloading 11.1 my external display, which I connect to via USB-C to Display Port, stopped working. I downloaded 11.2 and it's still not working so I'm super disappointed. Is anyone else having the same experience?

OK - more info from testing tonight. This is a firmware issue on the graphics adapter. Again, I have a Mac Pro Rack 2019. When I originally experienced this issue in late December, I got no display whatsoever with my previously-working Owens Corning optical Thunderbolt 3 cables to my current LG 5K2K monitor. As a troubleshooting measure, I took out my W5700X module and put the original 580MX back in but had the same problem. That 580MX was installed when I applied the 11.2 update earlier this evening that fixed the problem - full resolution @ 60Hz with the optical cable.

However, when I put the more powerful W5700X module back in the system, it went right back to the same problem - no video via the optical cable. Fortunately, I had backed up to an external Thunderbolt 3 flash drive before this whole mess started. Thinking that the 11.2 update must have applied firmware updates as a part of the process, I booted up my old 10.15.7 OS from December with the W5700X installed (used another cable to get lower res video given that the optical cables didn't work again) and re-applied the 11.2 update. After several PRAM and SMC resets, this all now works.

This doesn't apply to many of you - you don't have the option to switch out graphics cards with MacBook Pros. However, if you're in my situation, make sure you have the graphics card that you desire to permanently use installed when you apply the 11.2 update. The upgrade process updates the firmware on the card and the fix won't work if you do the update with a different card installed.

Crazy night - happy to be at full 5K2K resolution @ 60Hz once again. Very concerned by all this - no way this should have passed Apple QA processes....

We are all sharing your frustration. Lesson Learned: wait at least 6 months after an upgrade to upgrade, which I did almost absentmindedly after receiving numerous requests from Apple to do so.

BTW, I am about to purchase a new iMac. Do you know if the issue is plaguing both laptops and iMacs? Also, can anyone recommend the best cable or cables I will need to connect the two Macs. I already have one 2-foot cable that has a lighting connector at one end and an HDMI connector at the other.

Thanks!

I have the exact same setup as you and this issue has been causing me so much frustration. Apple has lost so much of my faith with this. How on earth they haven't fixed this issue by now is beyond me. The most frustrating thing is that there isn't even a workaround. Has anyone had any luck with any other cable solution? Maybe usb-c to HDMI?

I have this issue on my MacBook Pro 16 2019 too.

And it has been flagged by so many people since 14th December 2020

I can't believe Apple still hasn't fixed this issue in update 11.2 !!!

What The Funk ????

They better not wait for next update to fix this SHlT !!!

We want a fix NOOOOOOW !!!

You got lucky then.

My combination of MacMini M1 with 11.2 and BenQ PD2720U still does NOT support 60Hz above 720p scaling when connected via TB3! Tried all suggestions, including lowering the DP version to 1.2 in the monitor.

On the other hand, my son's MBP13" 2018 works just fine via TB3 on the same monitor, even after upgrading from 11.0 to 11.2 directly.

I am holding my breath. I just updated to OS 11.2 and have 3440 x 1440. However, about a week or so ago I booted into this resolution and was elated for about two days. Then, I was back into low resolution once again. So I am holding my breath. FYI I am on an external ViewSonic and using a MacBook Pro, 2019, with AMD Radeon Pro 5500M and Intel UHD Graphics 630.

Crossing my fingers.

hi,

I have my problems with 16” MBP 2019, not solved I talked

in previous posts.

ok, but yesterday Inwent to a store and I purchased a Mac mini M1 . And it

doesn’t work! It detects my 49” like a 12” monitor. Totally shocked , and it was with 11.2 big sur!!

Look the photos.... no comments

I read through all of your posts and agree that a workaround is needed in order to be allowed to work. However I’d strongly push on Apple with calls to customer service to keep them awake that we’re not forgetting this issue! It is causing too many problems to allow them just to forget about it.

I’m now waiting for a LG 32un880 ergo. It is supposed to be delivered on Sunday. I’ll let you know how it works