Have a thread going with 13 reports of AMD motherboards that, after upgrade to the latest BIOS, get the following error for Windows 10 VMs with GPU pass-through:
vfio: Unable to power on device, stuck in D3
It affects the x300, X400, and the new X570 series mobos. This has been an issue since March 2019 when AMD motherboard manufacturers began preparing for the AMD 3000 CPUs. In the thread, I noted during some early research that the same issue plagued the AMD TheadRipper on x399 motherboards back in 2018(??), and I think the final solution came in the form of a Linux Kernel upgrade.
This is my first report. Let me know if I need to change anything, or if it's not applicable here. Thank you!