Two monitors - only one extended display

[rboerner]

Originally Posted by rdobbe

Dear all,

For my MacBook Pro (13-inch, M1, 2020), I use a Dell docking station Dell K20A001 and have connected two Dell monitors:
- U2417H
- P2319H
Both are connected to the docking station via a 20 pin DisplayPort cable.

On my MacBook, I have the DisplayLink Manager 1.8 installed.

The problem: I get only one extended screen, which is mirrored across the two Dell monitors.

I would like to have two extended screens, one for each monitor.

Is this possible? And if so, how do I fix it?

Thank you very much in advance for your advice.

Kind greetings,
Roel

The Dell part number you provided suggests you are using a Dell Thunderbolt Dock - WD19TB --> https://www.dell.com/support/home/en...-dock/overview

Presuming for the moment that information is correct, that Dell dock does NOT have DisplayLink technology inside of it, which means DisplayLink will not be able to help you.

The WD19TB has a DisplayPort MST hub inside of it that drives the connected displays. Mac systems do NOT support DisplayPort MST, which is why a single image is being mirrored across both displays.

To the best of my knowledge, you will not be able to workaround this limitation.