IGPU passthrough for n4020 not working

[cemara]

Hi, I have an AIO asus v161 with n4020, and I'm trying to accomplish 2 things.

1. IGPU UHD600 passthru to windows 10 VM, so I can
2. Attach the built-in monitor (it's an AIO) to that VM

I'm stuck at the first step, I have followed 3os IGPU passthru guide precisely, whenever i run the VM with PCIE UHD600 attached I'm getting this error

kvm: -device vfio-pci,host=0000:00:02.0,id=hostpci0,bus=ich9-pcie-port-1,addr=0x0,x-vga=on: vfio 0000:00:02.0: error getting device from group 1: Invalid argument Verify all devices in group 1 are bound to vfio-<bus> or pci-stub and not already in use TASK ERROR: start failed: QEMU exited with code 1

The vga is already tied to vfio

00:02.0 VGA compatible controller: Intel Corporation GeminiLake [UHD Graphics 600] (rev 06) (prog-if 00 [VGA controller]) DeviceName: VGA Subsystem: ASUSTeK Computer Inc. UHD Graphics 605 Flags: fast devsel, IRQ 19, IOMMU group 1 Memory at a0000000 (64-bit, non-prefetchable) [size=16M] Memory at 90000000 (64-bit, prefetchable) [size=256M] I/O ports at f000 [size=64] Expansion ROM at 000c0000 [virtual] [disabled] [size=128K] Capabilities: [40] Vendor Specific Information: Len=0c <?> Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [ac] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [100] Process Address Space ID (PASID) Capabilities: [200] Address Translation Service (ATS) Capabilities: [300] Page Request Interface (PRI) Kernel driver in use: vfio-pci Kernel modules: i915

nano /etc/modprobe.d/blacklist.conf content :

blacklist intel
blacklist radeon
blacklist snd_hda_intel
blacklist i915
blacklist snd_hda_codec_hdmi
blacklist noveau

dmesg :
https://pastebin.com/BzxGQxqx

 

[cemara]

Update : turns out dmesg throws this error after proxmox fail to run the vm, I'm on PVE 7.2, do i need to downgrade?

[ 566.283720] DMAR: DRHD: handling fault status reg 2
[ 566.283733] DMAR: [DMA Write NO_PASID] Request device [00:02.0] fault addr 0x0 [fault reason 0x02] Present bit in context entry is clear
[ 567.524729] vfio-pci 0000:00:02.0: vfio_ecap_init: hiding ecap 0x1b@0x100
[ 567.524777] vfio-pci 0000:00:02.0: IGD assignment does not support opregion v2.0 with an extended VBT region
[ 567.524786] vfio-pci 0000:00:02.0: Failed to setup Intel IGD regions
[ 567.715926] DMAR: DRHD: handling fault status reg 2
[ 567.715940] DMAR: [DMA Write NO_PASID] Request device [00:02.0] fault addr 0x0 [fault reason 0x02] Present bit in context entry is clear

Update, downgraded kernel, now VM can't boot but i think it's stuck, dmesg is throwing this error :

AR: DRHD: handling fault status reg 2

[ 512.634758] DMAR: [DMA Write] Request device [00:02.0] PASID ffffffff fault addr 0 [fault reason 02] Present bit in context entry is clear

[ 513.935967] vfio-pci 0000:00:02.0: vfio_ecap_init: hiding ecap 0x1b@0x100

[ 517.768050] vfio-pci 0000:00:02.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0x160d