[vfio-users] UEFI not respecting video output selection

[Ryan A Young]

Forgot to add my motherboard. ASRock H97M.

On Thu, Jul 28, 2016 at 10:38 AM, Ryan A Young <rayoung at utexas.edu> wrote:
> Hi all,
>
> I have been a happy passthrough camper for two years with my HD 7850,
> a BIOS-only card. I recently upgraded to a GTX 1060 which has
> UEFI-capable firmware. It works great in my VM, but I have an issue
> with the UEFI firmware on the host - it always selects the GTX video
> output on bootup, even though I have the primary video card option set
> to "Onboard." This worked fine for the non-UEFI 7850, but it seems
> this option is being ignored for my new UEFI 1060.
>
> Of course this causes problems with guest assignment because Linux
> attaches various subsystems to the GTX. Right now I am working around
> this by unplugging the monitor cable from the GTX when I power on the
> system, which coerces the UEFI to not use it. Any ideas?
>
> Ryan