I've had good results with running the Nexdome on Windows with the latest drivers 0.5.3.2 (I need to see if that is still the latest!). I've tried experimenting with the Astronomy Linux that is running on Ubuntu 18.04 and did get the rotator working. The shutter isn't doing anything though. Has anyone tried the INDI Libraries?
I suggest you take a look at this thread https://www.nexdome.com/forum/observatory-automation/tested-latest-2-0-build. Rodolphe's latest updated firmware (v2.1) has resolved most if not all of the issues in the earlier firmware versions https://github.com/nexdome/Automation.