Booting Ubuntu from USB drive on MSI motherboard -- EVERYTHING fails
It looks like the latest bios version is 7C37v14 (Release Date 2019-09-18). Update your bios to this version in order to get the latest Linux support.
With these processors and motherboards being so new it is a good idea to pay attention to the latest bios releases.
Updating the BIOS to version 7C37v14 fixed the issue!