[vfio-users] No boot screen on Quadro M5000?

[Bronek Kozicki]

I wonder if anyone else is using Quadro M5000 ; I pulled the trigged on 
two for my workstation and they work reliably with vfio pass-through 
(yay, finally no reset issues!), but one thing is missing and I wonder 
if I'm doing something wrong.

Windows does boot, GPU works well and the drivers report the card 
exactly as expected, picture quality and performance is excellent as 
expected, however Windows boot screen is not displayed. The first screen 
displayed by passed-through GPU after boot is Windows 7 blue logon 
screen. When I switched my Windows to the new card, I had to put "<rom 
bar='off'/>" in libvirt device definition, because otherwise it would 
not boot.

FWIW, I am using experimental x-vga=on setup with regular BIOS. I tried 
installing a new OS with OVMF and vfio passthrough, but so far 
unsuccessfully. My OVMF machines work with spice, only vfio part does 
not seem to work for me. However I have not spent much time trying vfio 
with OVMF with this card yet.


B.