Try plugging in the external monitors only on the left side of the Macbook.
- tested with a $400 Targus thunderbolt Dock210 with two ancient Apple 30" Cinema displays in it;
- tested with only 1 plugged into the dock, and the other plugged in separately
- both scenarios work but ONLY when plugged into one of the Mac's LEFT ports.
- I am using Intel Macbook pro 16" with Big Sur
Note that I did not need to install any drivers or software for the docking station.
Fixed, Got a 13" Macbook Pro Touch Early 2016
I was using a targus dock before, no displaylink driver required, plug and play
after updating no more external monitors
so i went to display link drivers and install it
Now is not automatic it requires "DisplayLink Manager" to run 2 external displays.... close the app... monitors stop working
but... at least now i can use 2 external monitors
works on all ports, left/right
using a dock is the problem, tried with a Sabrent thunderbolt to hdmi... works fine... no drivers required.
Pretty sure is a DisplayLink compatibility issue