Using a thinkpad t460s docked with ubuntu 18.04 is almost perfect. The quirk is that when I plug in to the dock, the mouse clicks stop working - this is a dual monitor setup and the laptop lid is closed. When I open the lid (now 3 screens) mouse clicks work. Close the lid, no click. Weird right!?!
Thinking it could be solved with newer kernal, I upgraded to 18.10. Nope. Then 19.04. YES! It worked... for a week.
No amount of unpluging, port switching, modprobing, (un)suspending or restarting has got us back to that glorious first week of Disco.
I also have not been able to crack the search phrase to get me towards a solution.
Appreciative of any pointers.