Seconded here. Pro standalone on Ubuntu Studio 20.04 runs with no problems.
I had a bit of faffing to get the VST running on Bitwig 4 but solved it by copying the .so files into sub folders under ~/.vst. So it looks like
~/.vst/VCV Rack 2/VCV Rack 2.so
~/.vst/VCV Rack 2 FX/VCV Rack 2 FX.so
Hope this helps someone!
VCV 2.0 is superb, many thanks to Andrew @Vortico and all the devs. Great job!