Still not working....,Be sure to upgrade to latest 7.1 and also try the currently still opt-in 5.15 based kernel: https://forum.proxmox.com/threads/o...-proxmox-ve-7-x-available.100936/#post-435603
If that doesn't help it would be good to actually post what you tried and how the VM configs looks like.
00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:4e61] (rev 01)
[ 11.473861] i915 0000:00:02.0: [drm] Unsupported device. GVT-g is disabled
[ 11.473897] i915 0000:00:02.0: [drm] VT-d active for gfx access
[ 11.473901] i915 0000:00:02.0: vgaarb: deactivate vga console
[ 11.475802] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
[ 11.536556] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/icl_dmc_ver1_09.bin (v1.9)
[ 11.808502] i915 0000:00:02.0: GuC initialization failed -110
[ 11.808515] i915 0000:00:02.0: Enabling uc failed (-5)
[ 11.808519] i915 0000:00:02.0: Failed to initialize GPU, declaring it wedged!
[ 11.808949] i915 0000:00:02.0: [drm:add_taint_for_CI [i915]] CI tainted:0x9 by intel_gt_set_wedged_on_init+0x33/0x40 [i915]
[23759.242130] vfio-pci 0000:00:02.0: vfio_ecap_init: hiding ecap 0x1b@0x100
[23760.680519] vfio-pci 0000:00:02.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0xc72b
Feb 20 08:26:26 pve6 QEMU[3321]: kvm: vfio-pci: Cannot read device rom at 0000:00:02.0
Feb 20 08:26:26 pve6 QEMU[3321]: Device option ROM contents are probably invalid (check dmesg).
Feb 20 08:26:26 pve6 QEMU[3321]: Skip option ROM probe with rombar=0, or load from file with romfile=
Feb 20 08:26:26 pve6 kernel: [ 363.834538] vfio-pci 0000:00:02.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0xc72b
Feb 20 08:26:27 pve6 pvedaemon[1703]: <root@pam> successful auth for user 'root@pam'
pve-manager/7.1-10/6ddebafe (running kernel: 5.15.19-2-pve)
dmesg | grep -e DMAR -e IOMMU -e GVT
i915 0000:00:02.0: [drm] Unsupported device. GVT-g is disabled