Proxmox 8 - Intel iGPU HDMI passtrough issue on Windows 11 (error 43)

[azsde]

Hello everyone,

I am having issues making the iGPU be used as a passtrough for my machine.

I have a small computer powered by a N95 processor.

I have followed this guide, so my grub configuration contains:

GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_iommu=on iommu=pt pcie_acs_override=downstream,multifunction initcall_blacklist=sysfb_init video=simplefb:off video=vesafb:off video=efifb:off video=vesa:off disable_vga=1 vfio_iommu_type1.allow_unsafe_interrupts=1 kvm.ignore_msrs=1 modprobe.blacklist=radeon,nouveau,nvidia,nvidiafb,nvidia-gpu,snd_hda_intel,snd_hda_codec_hdmi,i915"

My /etc/modules contains the following:

# Modules required for PCI passthrough
vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd

I have attached my iGPU like so:



I have installed the intel drivers, but I get an error 43 under the device management.

It is worth noting that with this configuration I can get the HDMI output of my device to work for an Ubuntu VM.

Can someone point me in the right direction to get the iGPU working on windows 11 ?

I thank you in advance for your help !

Azsde.

 

[MilesTEG1]

hello @azsde
I've got the exact same problem.
And for information, when I pug an HDMI screen on the HDMI connector of my NUC (a Greekom Mini IT13, with an Intel i9-13900H and an Iris Xe graphics as iGPU), I've got a black screen.
It should show the windows screen...

 

[azsde]

I've been told that this is a windows issue

 

[MilesTEG1]

I've been told that this is a windows issue

Have you managed to have it working?
Because I don't know how to get the windows driver to works...

 

[azsde]

No unfortunately, I only managed to get Ubuntu working

 

[MilesTEG1]

No unfortunately, I only managed to get Ubuntu working

Oh !
Crap...
I don't need the iGPU on my Linux Mint... But I need it on my windows 11.

Did you do a clean install of windows 11 on the VM ?

 

[azsde]

Oh !
Crap...
I don't need the iGPU on my Linux Mint... But I need it on my windows 11.

Did you do a clean install of windows 11 on the VM ?

Yes but still no luck

 

[MilesTEG1]

@azsde Hi!
I managed to get the driver working inside the windows VM. No more error 43.
But I don't know if it really works, aka if the iGPU was used...
But no screen output when HDMI screen is connected to the NUC.

In order to achieve this, I had to follow this, by creating virtual iGPU : https://www.derekseaman.com/2023/06...u-vt-d-passthrough-with-intel-alder-lake.html
And to modify a file in the drive according to this : https://github.com/strongtz/i915-sriov-dkms/issues/117#issuecomment-1780922086
Read the whole issue

But that was with Proxmox 8.0.

I don't try this with 8.1 because I formatted all the NUC ton install Win11 and do some test with VMWare inside...

I'll try this when I'll install again Promox, maybe the 8.1 ^^

 

[MilesTEG1]

edit : you may have luck, the blog post was updated with this new one, yesterday.
https://www.derekseaman.com/2023/11...u-vt-d-passthrough-with-intel-alder-lake.html

 

[blamante]

https://forum.proxmox.com/threads/i...-the-dreaded-code-43-error.113229/post-657324

 

[luffy004]

Split gpu i got it working with my windows 11 but i want full pass through to windows

Also, it working on ubuntu vm (pop os) full pass through

But not on windows it still gives me code 43 and no output to monitor blank

 

[blamante]

Split gpu i got it working with my windows 11 but i want full pass through to windows

Also, it working on ubuntu vm (pop os) full pass through

But not on windows it still gives me code 43 and no output to monitor blank

Just follow long way with custom ROMs https://forum.proxmox.com/threads/i...-the-dreaded-code-43-error.113229/post-657324

 

[luffy004]

Just follow long way with custom ROMs https://forum.proxmox.com/threads/i...-the-dreaded-code-43-error.113229/post-657324

Thanks for the reply but I forgot to update

I already got it working

for intel 6 to 10th gen

follow this guide and also use the roms file to solve code 43 on windows: https://yangwenqing.com/archives/1768/

on linux guest romfile doesn't need