The monitor port on my Thinkpad X1 Gen2 does not work under X. It works with Wayland. It's probably because on Gen2 that port is driven by the NVidia card. On the Gen 3 it's driven by the Intel GPU.

By the by, Wayland is a definite improvement on X. It's noticeably faster, and handles scaling better. The lack of network transparency (eg, running gvim with X) doesn't matter because everything still uses X under the hood (via XWayland). I gather they have a workable solution or network transparency now, so the future is looking bright. It's just Gnome3 that's the problem.

I don't know whether it's a coincidence, but Gnome3 copied OSX's look and feel, and systemd copied OSX's launchd, and most of the development of both happens in the same company. There is even a launchctl. If they love OSX then fine, but I would have been happier if that had of scratched that itch by buying themselves Mac's rather than trying to copy them.