What is the model of the USB-C dock? Many/most of them use DisplayLink technology and so require that special kernel driver be installed first:
https://www.synaptics.com/products/displaylink-graphics/downloads/ubuntu
What is the model of the USB-C dock? Many/most of them use DisplayLink technology and so require that special kernel driver be installed first:
https:/ /www.synaptics. com/products/ displaylink- graphics/ downloads/ ubuntu