I wanna build a home server, using the ubuntu 20.04 server as the host machine, virtualize a win10 to run games, and virtualize another to run freenas. The host include integrated graphics and ext graphics(nv 2060 ). followed a graphics card pass-through virtualization tutorial. During the advancement, I found that my ext graphics card and other hardware on the motherboard are always in an iommu group. An error is reported when adding graphics hardware to the virtual machine. I don't know how to separate the ext graphics card from the iommu group.
I think the solution is
1 Is that a patch needs to be applied. Is this kernel patch? Enable-overrides ACS 2 Is there a dedicated virtualization linux release version, easy to make ext graphic card pass-through? Include Enable-overrides ACS patch?