Check if you have this condition: https://mathiashueber.com/fighting-error-43-nvidia-gpu-virtual-machine/#:~:text=The%20infamous%20error%2043%20is,800%20by%20600%20display%20resolution . Nvidia removed those checks in the recent versions of their drivers, but I am not sure what version you used.
On Sun, Jul 17, 2022 at 10:43 AM Brian McKee <[email protected]> wrote: > I've been using Virtmanager, KVM/QEMU for my work laptop for years. I > ditched VirtualBox because I was tired of my VM being broken once or > twice a year with an update. > > QEMU has been awesome! I run Spice QXL on it and it's a little > slower, but it does well enough for Orcad for me to be productive. > > I found out about GPU passthrough a couple years ago. I decided to try > it on my new laptop, which I just got on Monday. > > Following Arch and Gentoo's guides (I run Gentoo) I have it working, > except for one thing: Windows does not recognize the GPU as an NVIDIA > RTX 3060M. The PCI IDs are correct, but for some reason Windows > doesn't get it. > > I read in Arch's guide that old versions of Nvidia's installer did not > recognize the PCIe device, but I didn't think that applied now. Plus, > I suspect if it were working properly that Windows would detect it as > an RTX3060M. > > I have both the VGA and audio device routed with vfio: (they are on an > unique IOMMU group: 14) > > lenny ~ # lspci -nnk -d 10de:2560 > 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GA106M > [GeForce RTX 3060 Mobile / Max-Q] [10de > :2560] (rev a1) > Subsystem: Lenovo GA106M [GeForce RTX 3060 Mobile / Max-Q] > [17aa:3b07] > Kernel driver in use: vfio-pci > lenny ~ # lspci -nnk -d 10de:228e > 01:00.1 Audio device [0403]: NVIDIA Corporation Device [10de:228e] (rev a1) > Kernel driver in use: vfio-pci > Kernel modules: snd_hda_intel > > I have added them both in virt-manager: > > <hostdev mode="subsystem" type="pci" managed="yes"> > <source> > <address domain="0x0000" bus="0x01" slot="0x00" function="0x0"/> > </source> > <address type="pci" domain="0x0000" bus="0x04" slot="0x00" > function="0x0"/> > </hostdev> > <hostdev mode="subsystem" type="pci" managed="yes"> > <source> > <address domain="0x0000" bus="0x01" slot="0x00" function="0x1"/> > </source> > <rom bar="off"/> > <address type="pci" domain="0x0000" bus="0x05" slot="0x00" > function="0x0"/> > </hostdev> > > After I got them passed properly and enabled EFI in the virtual BIOS, > the card initialized with the BIOS message. Then I deleted the virtual > screen and when Windows ran it displayed on the RTX3060M output! > > But, the Windows Driver chosen for the hardware is: "Microsoft Basic > Display Adapter" and it's stuck in 800X600 resolution. > > The NVIDIA driver says the hardware is not compatible with the driver. > It cannot find a compatible GPU. > > I'm a little stuck, I was hoping you guys could help me out. I'd > really love to game on my gentoo box in KVM / QEMU. > > Thanks in advance. > > Brian > > -- > -- Consciousness moves everything. > >
