Proxmox 8 beta breaks Windows GPU passthrough, host crashes

stooovie

Member
May 16, 2023
48
6
8
After installing the 8 beta, my Windows 10 VM with GPU passthrough no longer runs, and always crashes the entire node.

Same with a Win 11 VM. Both do work without PCI (GPU) passthrough. GPU passthrough does sort of work in Linux guests (PopOS), but usually after logging in, screen blanks and stays blank. This worked before. Linux guests do not crash the system, Windows guests do.

Host does not crash when there's no "
x-igd-opregion=on" in the VM conf args but then again, no image

this is the config of the Win10 guest:
Code:
agent: 1
args: -device vfio-pci,host=00:02.0,romfile=/etc/pve/qemu-server/i915ovmf.rom,x-igd-opregion=on
balloon: 0
bios: ovmf
boot: order=sata0;ide2;net0
cores: 2
cpu: host,hidden=1
efidisk0: storage:vm-102-disk-0,efitype=4m,pre-enrolled-keys=1,size=4M
hostpci0: 0000:00:1f.3
ide2: none,media=cdrom
machine: pc-q35-7.2
memory: 4096
meta: creation-qemu=7.2.0,ctime=1684587351
name: win10
net0: e1000=96:B3:46:FA:0C:EA,bridge=vmbr0,firewall=1
numa: 0
ostype: win10
parent: all_working
sata0: storage:vm-102-disk-2,backup=0,discard=on,replicate=0,size=128G,ssd=1
scsihw: virtio-scsi-single
smbios1: uuid=98aed783-45fe-4ff4-a508-e417b4d3108c
sockets: 1
spice_enhancements: foldersharing=1
tablet: 0
tags: windows
vga: none
vmgenid: 33ad5816-0574-4e7e-82f1-16aa982055ef
vmstatestorage: storage

this is my grub:
Code:
GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on iommu=pt initcall_blacklist=sysfb_init"
GRUB_CMDLINE_LINUX=""

my etc/modprobe.d/vfio.conf (GPU and audio, they are in separate IOMMU groups, GPU is in its group by itself)
Code:
options vfio-pci ids=8086:5916,8086:9d71
 
Last edited:
Since I asked in another thread, I'll ask here as well: do you know if there's a bug report for that?
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!