The guest tools for 14.1.1 seemed to install ok for me with 4.20.6. Same old gdm problems with Fedora 29, though.
I was hoping that was the case. They say F28 is supported on the P14 guest os listing and it just went to 4.20 in the last week or so. The theory being if it builds for 4.20 in F28, it should also build for 4.20 in F29. Guess I'lll give it a shot in the am.
Builds with kernel 4.20.6 and the coherence module works again. Really don't mind if there's a gdm issue. Think I'm going to stick with kdm anyway since it doesn't hang the shutdown process like gdm sometimes does.