Linux Mint 20 Beta is performing surprisingly well on a Gigabyte Aorus Elite X570 motherboard. A Recommended combination.
The components that are working include: Ryzen 9 3900X, 32GB of DDR4-3600 RAM, Samsung 970 EVO NVMe M.2 SSD, Samsung 860 EVO SATA III SSD, USB, gigabit Ethernet, Nvidia RTX-2070 Super. This is an EFI installation.
XMP must be enabled in the BIOS to get the full rated speed of Corsair LPX DDR4-3600 RAM.
CPU and Nvidia temperature sensors work.
Virtualization for Virtualbox works after enabling SVM in the BIOS.
I did not test on-board audio because I use simple USB audio adapter instead, which is well-supported by Linux. Jackd2 works.
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