iGPU passthrough not working for Windows, but working for Linux

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xander-m2k

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Dec 27, 2023
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Hi everyone,

I tried running Proxmox on a laptop and it seems to be working great, except for the iGPU passthrough for Windows.
I took a look at the following documentation: https://pve.proxmox.com/wiki/PCI_Passthrough
This documentation seems to be working fine for Ubuntu but not in any shape or form for Windows.

What I want to achieve is that Windows is using the physical display, which is attached to an iGPU (Intel HD Graphics 620).
Now, with Ubuntu this is working fine out of the box, but Windows just does not show on the physical display. (using OVFM, q35, hostpci1: 00:02,pcie=1,x-vga=1)
I even tried installing the correct intel graphics drivers, and this does make the iGPU show up in Windows device manager, but no display output.

I saw many people do this and showed it working on using RDP, but never a physical display.
So I would like to ask the question, is this even possible? And if so, how?
 
Exact same symptoms here! I have a Kali VM with the iGPU passthrough working flawlessly. Unfortunately this doesn't work for my better half, being that Windows 11 is supposed to replace our living rooms "smart" TV. I am struggling to find a recent tutorial on the topic since proxmox 8 and am quite overwhelmed with the amount of old posts with conflicting information in the comments. (such as this no longer applies since update x) It seems to be a years long topic with few people reporting success.

My personal setup is a Dell Optiplex 7070SFF i7-9700 with the delightful Intel UHD 630. I too get the code 43 error in device manager
 
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