Comment # 30 on bug 110795 from Etienne Lorrain

(In reply to Andrew Shark from comment #29)
> Created attachment 145087 [details] [review] [review]
> Script to modify packages to be able to use with ubuntu 19.04
> 
> Updated script to work with Ubuntu 19.04 and driver version 19.30-855429
> Set status to REOPENED, because the problem is still actual.

Is it not fixed for you by (as my previous comment):
A shorter solution is to comment out (by adding # as first char) the line:
ModulePath "/opt/amdgpu/lib/xorg/modules"
in 00-amdgpu.conf