Have you tried a BIOS install and setting x-vga=on? With my 480, there is no UEFI image or it got corrupted somehow, so I need to pass a UEFI vbios I downloaded to see the screen if I use UEFI. With BIOS, x-vga=on works.
On Sun, Jan 29, 2017 at 2:55 PM, Javier Celaya <[email protected]> wrote: > Hello list > > I've been looking for it, but I cannot find a solution to this problem. I > have a working Windows 10 VM with UEFI boot, which I pass an AMD Radeon RX > 480. It also worked with a NVIDIA GTX 550Ti I had before. The thing is, it > only works with a QEMU 2.2 patched with the NoSnoop fix. With any later > release of QEMU, or without the patch, the VM: > - Throws an Error 43 with the NVIDIA card. > - Goes black on boot and reboots some seconds later with the AMD card > The vfio FAQ says that patch is not needed with a later release of QEMU, > so I'm wondering what I'm doing wrong... > > My hardware is an Intel i5 2500, ASUS motherboard with a Z68 chipset, 16GB > of RAM. Both graphics cards appear in their own iommu group with the HDMI > sound card. > > My QEMU command line is: > > src/qemu/build-2.2-NoSnoop/x86_64-softmmu/qemu-system- > x86_64 > > -nodefaults -no-user-config > > > -enable-kvm -m 8192 > > > -cpu Opteron_G1,+cx16,+lahf_lm,kvm=off > > > -M q35 > > > -smp 4,sockets=1,cores=4,threads=1 > -realtime mlock=on -rtc base=localtime,driftfix=slew > -drive file="OVMF_CODE-pure-efi.fd",if=pflash,format=raw,unit=0, > readonly=on > -drive file="OVMF_VARS-pure-efi.fd",if=pflash,format=raw,unit=1 > -drive file="$HD",id=disk1,if=virtio,cache=none > -netdev bridge,id=netuser,br=br0 > -device virtio-net-pci,netdev=netuser, > id=net0,mac=52:54:00:72:75:9e > -device ich9-intel-hda,id=sound0 > -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 > -device ioh3420,bus=pcie.0,multifunction=on,port=1, > chassis=1,id=root.0 > -usbdevice $JOYPAD > -usbdevice $KEYBOARD > -usbdevice $MOUSE > -mem-path $MEM_PATH > > -nographic -vga none > -device vfio-pci,host=01:00.0,id=hostdev0,bus=root.0, > multifunction=on,x-vga=on > -device vfio-pci,host=01:00.1,id=hostdev1,bus=pcie.0 > > I have tried, with the same results: > - Using the pc-i440fx machine > - Connecting the HDMI sound card to another bus > - Not connecting the HDMI sound card at all > - Using -cpu host (Windows 10 hangs with this configuration) > - Using -cpu core2duo > > Any other idea? > Thank you > > Javi > > _______________________________________________ > vfio-users mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/vfio-users > >
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