GPU Passthrough not working correctly after PVE6 to 7 update

[aqumax]

Hi all,

I am getting issues with passthrough not working correctly on my VM after updating to PVE7. Everything was working perfectly before the update with the settings below.

The error I am getting is this when I try boot up my Win10 VM after the update


kvm: -device vfio-pci,host=0000:02:00.0,id=hostpci0.0,bus=ich9-pcie-port-1,addr=0x0.0,x-vga=on,multifunction=on: vfio 0000:02:00.0: failed getting region info for VGA region index 8: Invalid argument device does not support requested feature x-vga TASK ERROR: start failed: QEMU exited with code 1

If I remove the Primary GPU option it boots up fine with code 43 in device manager.

Here is the conf for my win10 VM

agent: 1
balloon: 1024
bios: seabios
bootdisk: scsi0
cores: 8
cpu: host,hidden=1,flags=+pcid
efidisk0: SSD1.120:vm-100-disk-1,efitype=4m,pre-enrolled-keys=1,size=4M
hostpci0: 0000:02:00,pcie=1,x-vga=1
kvm: 1
machine: q35
memory: 16384
name: RGaming10
net0: virtio=7A:C1:4F:DC:50:53,bridge=vmbr0,firewall=1
numa: 0
ostype: win10
scsi0: local-lvm:vm-100-disk-0,cache=writeback,size=256G
scsihw: virtio-scsi-pci
smbios1: uuid=704ffd5d-fe0b-4048-81ec-85472962620f
sockets: 1
vmgenid: c9cf194f-95e5-445b-ba35-2ac7a285b5c3

Here is the output for lspci -v

https://pastebin.com/CfzY6dZR

I have tried creating a fresh new VM using Win11 to see if it was an issue with the VM after the update but I still get the same issue.

 

[dcsapak]

you are booting your vm with seabios, but have an efidisk configured. is this intentional?

 

[aqumax]

you are booting your vm with seabios, but have an efidisk configured. is this intentional?

Yes sorry I was testing OVMF to see if that would make a difference but was still getting the error even after removing the efidisk

 

[dcsapak]

can you try to boot into an older kernel (from before the upgrade) ?

if that works, can you send the output of 'dmesg' for the working & non-working kernel?

 

[R27]

I have the same problem. Passthrough stopped working after upgrading from 6.4 to 7.1. Booting with an older kernel fixes the problem. Where should I upload 'dmesg' ?

Update: installing kernel 5.15.17-1-pv fixes the problem.