[vfio-users] GTX 570 EFI support

[Ben J]

I am currently using a GTX 580 for passthrough. The 500 series does not
support UEFI as far as I'm aware. If I remember correctly, that error
occured when the card was already claimed by something. My card is very
finnicky about getting claimed so I usually need to 'reboot' the card after
freeing it from the NVIDIA driver or a VM. I just do this by suspending but
I'm sure there's another way to power cycle just the card. You definitely
need to use one of the older tutorials, any one that uses EFI won't work
for you.

I would try launching the card with PCI stub and then pulling the ROM,
maybe vfio-pci is somehow claiming the card. My current procedure is to
launch both GTX 580's with PCI stub initially and then bind one to vfio and
the other to NVIDIA for my host OS. Not sure how to help with your specific
problem but I can share more about my setup if it would help. I'm using a
Win 7 guest so that could be a difference.

On Tue, Aug 2, 2016 at 12:36 PM, Alex Williamson <alex.williamson at redhat.com
> wrote:

> On Tue, 2 Aug 2016 15:50:03 +0000 (UTC)
> gerson moises <grsnmoises at yahoo.com> wrote:
>
> > Hi everyone,
> >
> > I followed the guide on this link : http://vfio.blogspot.my/2014/
> 08/does-my-graphics-card-rom-support-efi.html to check if my graphics
> card ROM supports EFI
> >  But I get the following error :
> >
> > "cat: rom: Input/output error"
> >
> > What could be the reason ?
> > I am using vfio-pci and already put the option vfio-pci ids =boot , I
> followed all the steps and when I reboot I see the GTX 570 is unused.
> > Or does anyone know whether GTX 570 supports EFI ?
> >
> > I tried this because whenever I start the VM with a windows 10 guest I
> have a BSOD loop after installing NVIDIA driver. With Ubuntu guest I also
> get an error, it says "glx" not found and I cannot successfully login in
> the guest OS, I just get a blank screen with the Ubuntu logo, although with
> the Nouveau driver I have no problem and the VM OS actually can see the GTX
> Graphics card. The problems only begin after installing the NVIDIA drivers.
> So this is a troubleshooting attempt.
> >
> > Any idea ?
>
>
> It's pretty well guaranteed that a 500 series GeForce does not support
> UEFI.  AFAIK, there's not a terribly high success rate with these cards
> either.  The 600 series are generally what I consider the bottom end of
> working reasonably well.  Otherwise there's not really enough
> information in your report to provide any specific advice.  Thanks,
>
> Alex
>
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