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Re: [vfio-users] Guest does not boot OS with GPU passed through, stuck at TianoCore boot splash

On 04/11/16 21:48, Stefan Seil wrote:
> Thank you for the detailed explanation!
> I did this and have uploaded the log here: http://pastebin.com/BXU9UqiG
> I don't really see any apparent errors in there...

Right, I expected a failed ASSERT() or something similar, but I'm not
seeing a direct error anywhere.

What I can see from the log is:

- Two instances of "AmdGop.efi" starting. (Note: that doesn't mean they
  are actually binding the card(s) yet.) The number two is strange. Do
  you have two assigned GPUs? Can you share your domain XML?

- I can see three instances of EfiGraphicsOutputProtocol being
  produced. One of them belongs to the QXL driver built into OVMF.
  Again, do you have two assigned GPUs?

- The boot process advances pretty far beyond the above. The last
  message is related to the USB bus driver
  (MdeModulePkg/Bus/Usb/UsbBusDxe). Are you assigning USB devices too?

  In your email, you wrote, "If I remove the PCI devices from the VM,
  the OS boots without problems." -- device*s*, plural. Did you perhaps
  mean "PCI devices" generally as "assigned devices"? If so, what
  happens if you keep the GPU(s), but remove the assigned USB devices
  from the domain XML?


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