The Surface Dock and External Monitors - SlippingGitty/Linux-Surface-Wizard GitHub Wiki
Connecting monitors with the Surface Dock has had it's problems.
There is a lot of weird solutions to this issue. Methods maybe be/become outdated of course.
arupbg commented on Nov 28, 2018
- Bought a £10 (4k) HDMI 1.2 to DV adapter from amazon
- Connected the (4k) HDMI port to the back of the monitor and DV port back of the Microsoft dock (brick)
GMory commented on Jan 10, 2019
OK so I restarted and loaded into windows, then restarted and back into ubuntu and it works now :| Hah, solutions like this are some of my favorite.
jakeday commented on Mar 7, 2018
The issue is that the monitors need to be attached to the dock and the dock connected to the Surface Pro when booting. That's the only way it currently sees the screens, otherwise they won't be detected.