[vfio-users] VM doesn't boot, hangs with R9 Fury passthrough

[Abdulla Bubshait]

I have been having a display issue with my R9 Fury X. No output being
displayed but the problem seemed to only manifest on a guest restart. If I
reboot the host and run the VM for the first time I get a normal running
machine.

I am not sure that is completely identical since I could verify that my
machine runs despite no display (Synergy still works from the guest).



> On Saturday 29 August 2015 21:29:10 Matti Niemenmaa wrote:
> > Hello all,
> >
> > I'm trying to passthrough an AMD Radeon R9 Fury to a Windows 10 guest,
> > but the VM doesn't seem to work at all when I tell qemu to add the
> > vfio-pci device. No errors of any kind are output anywhere that I can
> see.
> >
> > Possibly relevant hardware and software versions:
> >
> > Motherboard: Asus X99-A
> > CPU:         Intel Core i7-5930k
> > GPU host:    AMD Radeon R9 270X
> > GPU guest:   AMD Radeon R9 Fury
> > Linux 4.1.6 (I also tried 4.2-rc8 with the same results)
> > QEMU 2.4.0
> > edk2.git-ovmf-x64-0-20150804.b1143.g8ca1489
> >
> > The following command successfully boots the VM with emulated VGA
> > graphics and working audio and networking (modulo some audio distortion,
> > which I haven't bothered looking into yet):
> >
> > qemu-system-x86_64
> >    -nodefconfig -serial none -parallel none -nodefaults -name The-Windows
> >    -enable-kvm -cpu host -smp sockets=1,cores=6,threads=2 -m 16G
> >    -soundhw hda
> >    -drive
> >
> if=pflash,format=raw,readonly,file=.../edk2.git/ovmf-x64/OVMF_CODE-pure-efi.
> > fd -drive if=pflash,format=raw,file=.../windows-ovmf-vars.fd
> >    -drive if=virtio,format=raw,file=.../windows.img,index=0,cache=none
> >    -rtc base=localtime
> >    -net nic,model=virtio -net bridge,br=br0
> >    -alt-grab
> >    -boot order=c
> >    -vga std
> >
> > But replacing the last option, "-vga std", with the following, doesn't
> > work at all as intended:
> >
> >    -device vfio-pci,host=02:00.0,addr=06.0
> >
> > The monitor the Fury is plugged into doesn't receive a signal, nor does
> > anything show up in the window opened by qemu, so there's no visual
> > feedback at all. It appears that Windows doesn't even start, since I
> > can't connect to it over VNC despite that working when "-vga std" is
> > used. As far as I can tell the VM hangs indefinitely at this point.
> >
> > qemu doesn't report any errors (in fact it outputs nothing), nor is
> > there anything relevant-looking in dmesg.
> >
> > I'm at a loss as to how to proceed. Any assistance would be welcomed.
> >
> > — Matti
> >
> > _______________________________________________
> > vfio-users mailing list
> > vfio-users at redhat.com
> > https://www.redhat.com/mailman/listinfo/vfio-users
>
>
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