Updated to Mac OS 11.3 and second external monitor no longer works...

[rottyman]

Originally Posted by JanB

For me downgrade is not an option.

I use a resolution switcher (RDM - https://github.com/avibrazil/RDM) which gives me a workaround for the missing resolutions (but no HiDPI > 1080).

Works fine on a MacBook Air M1 with LG 4k Monitor connected via DisplayLink Dock.

Thanks..used this as a work around on my MacBook M1 with dual LG 4K monitors. Back to high resolution displays