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Re: [vfio-users] Code 43 with Rampage III and GTX660 in Windows 10



On Fri, Jun 24, 2016 at 1:58 PM, Brian Yglesias <brian atlanticdigitalsolutions com> wrote:
I've switched to OVMF bios, and there is no change.  Shouldn't I be able to see the BIOS splash screen irrespective of the nvidia driver detecting that it is in a VM?

Let's clarify something, the ROM on the card provides the pre-boot driver for the card.  Therefore if you're running an OVMF VM w/o a UEFI ROM, you won't see a splash screen.  Likewise if you run SeaBIOS without enabling VGA to the device (ie. x-vga, possibly patching host i915 driver), then the execution of the ROM won't work and you won't get a splash screen.  The VM firmware also tends to only initialize the primary VM graphics, so if the assigned GPU is not the primary (typically exclusive) graphics, no splash screen.  ROM level drivers don't care about a hypervisor. 
 
  That would have to happen once the OS is loaded, so then perhaps my problem is not that.

I'm still awaiting EVGA to send me a UEFI bios image for my card.  They said they would if I provided them with an s/n and p/n, but have yet to get back to me.

They were pretty quick for me when I requested the same for my 660.
 
I'm following the guide for my distro in lieu of the 4th installment in your tips and trick series:  https://pve.proxmox.com/wiki/Pci_passthrough , and at the bottom it seems to imply that I must use SeaBios if my card is not UEFI.  I'm not sure if this is intended.

If you care about the ROM being compatible, which you do in this case, that's true.  I would never recommend to someone that potentially has access to a working UEFI ROM for their GPU to go the SeaBIOS, x-vga route though.  If you're going to use SeaBIOS, you really need to read the 5th section of my guide and you might even need to build your own kernel if you have i915 host graphics.
 
As to your suggestion of using pc-i440fx, my distro seems to have dropped support for that.  I'm looking into getting that working now.

Find a new distro?  Thanks,

Alex

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