On Tue, 31 Mar 2020 21:35:33 +0300 Артем Семенов <artem.seme...@jarillolabs.com> wrote:
> Hello! > > I try to passthrough GPU to the virtual machine (qemu). I've tried > different variants: > > -device vfio-pci,host=02:00.0,bus=root.1,addr=00.0,multifunction=on,x-vga=on > > or > > -device vfio-pci,host=02:00.0,x-vga=on > > and other but in any case I get error: > > vfio 0000:02:00.0: failed getting region info for VGA region index 8: > Invalid argument > device does not support requested feature x-vga > > dmesg contains: > > [ 844.599821] vfio_ecap_init: 0000:02:00.0 hiding ecap 0x1e@0x258 > [ 844.599860] vfio_ecap_init: 0000:02:00.0 hiding ecap 0x19@0x900 > > If I remove x-vga=on option then qemu works but there is no signal from > GPU (black screen). > > It looks like http://vfio.blogspot.com/2014/08/vfiovga-faq.html > > "Question 3: > > I have Intel host graphics, when I start the VM I don't get any output > on the assigned VGA monitor... " > > I've tried to use 2 versions of the kernel: 4.19 and 5.4 - no difference. > > Moterboard: ASUS PRIME H370-A. > GPU: ASUS Turbo GeForce RTX 2060 Super. > > What could be the cause of this problem? Is your host kernel built with CONFIG_VFIO_PCI_VGA=y? Are you disabling that support with the disable_vga=1 module option of vfio-pci? Thanks, Alex _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
