Nvidia rtx 4090 passthrough problem


New Member
Jun 5, 2023

I want to do GPU Passthrough to Windows 10 Machine on Proxmox Virtualization.

I followed the instructions in the link https://pve.proxmox.com/wiki/PCI_Passthrough

But when I run it in PCI-Express Mode, the virtual machine freezes or does not boot.

When I run it in PCI mode, the GPU-Z output is as attached, and the video card does not appear in the task manager.



  • PSX.jpg
    38.9 KB · Views: 13

could you provide your vm config?

Run this command as root:
qm config <vmid>
Hello Again,

agent: 1
bios: ovmf
boot: order=virtio0;ide2;net0
cores: 16
efidisk0: local:105/vm-105-disk-0.qcow2,efitype=4m,pre-enrolled-keys=1,size=528K
hostpci0: 0000:01:00,pcie=1,romfile=Rtx4090.rom,x-vga=1
machine: pc-q35-7.2
memory: 16384
meta: creation-qemu=7.2.0,ctime=1686075296
net0: virtio=02:63:69:9F:30:B0,bridge=vmbr0,firewall=1
numa: 0
ostype: win11
scsihw: virtio-scsi-single
sockets: 1
vga: none
There is multiple guide on how to pass and forum have multiple topic on that. Mostly : disconnect the modem, install prox iso, put the 7-8 config files and you pass. But i rarely see dealing with the rom file. skip that for sure. If you never did this before , simply put a vm with xubuntu and boot . your card will pop up all working if basic setup are made.


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!