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add vGPU to a Windows 11 or Server 2022 VM

  1. create VM with CPU set to host DO NOT CHANGE THIS
  2. boot VM without vGPU and display set to default
  3. install windows 11
  4. install VirtIO drivers [as of 4.6.2024 do not install guest tools - this may cause repair loops]
  5. shutdown VM and change display to VirtIO-GPU
  6. Now add the vGPU pool as a PCI device
  7. when creating a VM add a PCI device and add the poool as follows:

image

  1. now boot into VM and install latest IrisXe drivers from intel
  2. you should now have graphics acceleration availble to apps wether you connect by webcolse VNC, SPICE or an RDP client

From @rinze24:

If you follow the guide successfully, in Device Manager you will see: - Microsoft Basic Display Adapter - If you use Display in VM Settings - Intel iGPU - passthrough

You have 2 options (or more) to use your iGPU. Because Windows 11 decide on its own which graphics to use.

  1. Setup Remote Desktop Connection in Windows 11 and set the display to none in VM Hardware settings.
  2. Pro: No configuration per app, Responsive Connection.

  3. Con: No proxmox console.

  4. Inside Windows Set which graphics preference to use per application in Display Settings -> Graphics Settings-

  5. Pro: Have proxmox console.
  6. Con: Need to configure per application / program.

If you hit automatic repair loop at any point shutdown the machine and edit its conf file in /etc/pve/qemu-server and add args: -cpu Cooperlake,hv_relaxed,hv_spinlocks=0x1fff,hv_vapic,hv_time,+vmx