External USB C Monitor not working

[duckzero]

In my experience in playing  with various docks:

- sometimes, the PineBook only works in one single cable orientation (troubles negociating which lanes used for USB3 and which lanes used for Display Port), try flipping the USB-C connector the other side up.

- make sure that you have set up the resolution to something sufficiently low that that can be handled by only two Display Port lanes (as the other two are needed for USB3). Do no attempt to run 4kp60, it won't work.

Flipping the USB-C connector works for me most of the time.