Big Sur 11.1 External Display Issues!

It's a Big Sur issue since 11.1 update. Please report it here: https://www.apple.com/feedback/macos.html

If you want this problem fixed, you have to put pressure on Apple. So call customer service and report the problem here: https://www.apple.com/feedback/macos.html Do both: call and write.

Please read my very long post about this subject complete with pics on https://discussions.apple.com/thread/252486170?answerId=254757141022#254757141022

If you need there is a way to install Catalina on your Mac with this article: https://support.apple.com/kb/DL2039?viewlocale=en_US&locale=en_US

Hope this helps!

It seems Monterey has fixed this.

It has broken other stuff of course (like this --> https://discussions.apple.com/thread/253297056)

:)

Solution found!!

1. unplug usb c hub from both macbook and external monitor
2. plug usb c hub into macbook
3. plug hdmi cable into usb c hub.

This didn't quite for for me. For some reason, I only get 1 resolution at close to 60hz (59.9) and it's in low resolution (not scaled) mode so I get blurry text.

Same issue here.

Monitor: iiyama ProLite XUB2792UHSU

Connection: Display Port

Tried every suggested fix but output is always the same:

Thanks Apple for Big S***!

Thx everyone on the responses. Here is my set up with my 3 external monitors and a total of 4 screens on Catalina. Works great. I don’t want to lose this reliability if I upgrade to Big Sur!

Have you tried to open Display Link Manager and enable the option "Launch app automatically after logging-in"?

I'm not sure if this is the same problem I'm having (or related), but I think it is. I am using an external monitor (BenQ PD3220U) and I have a 2019 MacBook Pro.

I am having exactly the same problem. I raised it yesterday morning. I have a horrible workaround which is to connect vis HDMI through a port replicator.

Similar issue, My Samsung Odyssey G9 49" curved display's resolution is no longer recognized, best I can get is 3840 x 1080 instead of 5120 x 1440. This is terrible.

Happy for you HTEPS, but Turning the screen off and on again does nothing on my end.

16" MBP + 23" Cinema Display via DVI adapter