[SOLVED] iGPU intel 620 PCI passthrough on Intel NUC7i5DNH

[massimogtsg]

Dear Proxmox community,

I've been trying to passthrough the iGPU of a Intel NUC7u5DNH to a Debian VM without success.

lspci gives the following:
00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 620 [8086:5916] (rev 02).
dmesg detects and adds the PCI device
[ 0.366384] iommu: Default domain type: Passthrough (set via kernel command line)
[ 0.433734] pci 0000:00:02.0: Adding to iommu group 0
The VM config file:

root@pve:~# cat /etc/pve/qemu-server/100.conf
bios: seabios
boot: order=scsi0;ide2;net0
cores: 2
cpu: host
hostpci0: 0000:00:02
ide2: local:iso/debian-live-12.7.0-amd64-standard.iso,media=cdrom,size=1498496K
machine: pc-i440fx-4.2
memory: 6096
meta: creation-qemu=9.0.2,ctime=1728314541
net0: virtio=BC:24:11:7A:2B:A1,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsi0: local-lvm:vm-100-disk-0,discard=on,iothread=1,size=64G,ssd=1
scsihw: virtio-scsi-single
smbios1: uuid=9e41d096-c739-42ee-a432-796d87601df8
sockets: 1
vga: none
vmgenid: 4a1eb654-921d-4379-853d-762c2885f885

/etc/modprobe.d/blacklist.conf

blacklist snd_hda_intel
blacklist snd_hda_codec_hdmi
blacklist i915

cat /etc/modprobe.d/vfio.conf

options vfio-pci ids=8086:5916 disable_vga=1

The HDMI output gets highjacked the moment I boot the VM. I also detect the iGPU 620 inside the VM as an intel 620. The monitor, however, still detects no output signal. What am I doing wrong?

 

[Moayad]

Hi,

Can you try to get rid of the `blacklist i915` from the blacklist.conf, since the iGPU passthrough to work, the VM needs to load the i915 driver inside the VM.

 

[massimogtsg]

Hi,

Can you try to get rid of the `blacklist i915` from the blacklist.conf, since the iGPU passthrough to work, the VM needs to load the i915 driver inside the VM.

Dear Moayad,

Thank you so much. That fixed it.