Proxmox Freezes After Passing GPU to Windows VM – Need Help Resolving Issue

[NureddinDev]

After passing my main GPU to the Windows VM, Proxmox freezes whenever I restart or start the Windows VM. I am unable to access Proxmox until I shut it down completely (a restart won’t resolve the issue).

Here are my specs:
CPU: 7900X3D
GPU: 7800XT (I have downloaded the GPU rom file from this link)
SSD: NVMe 2TB
RAM: DDR5 64 GB

The Boot Image:

cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-6.8.12-2-pve root=/dev/mapper/pve-root ro quiet amd_iommu=on iommu=pt video=vesafb:off video=efifb:off video=vesa:off video=simplefb:off pcie_acs_override=downstream,multifunction nofb nomodeset initcall_blacklist=sysfb_ini

cat /etc/modules
vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd

cat /etc/modprobe.d/blacklist.conf
blacklist nouveau
blacklist nvidia
blacklist radeon
blacklist i40evf
blacklist amdgpu

The IOMMU grouping using this script

Group:  0   0000:00:01.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14da]
Group:  1   0000:00:01.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:14db]   Driver: pcieport
Group:  2   0000:00:01.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:14db]   Driver: pcieport
Group:  3   0000:00:02.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14da]
Group:  4   0000:00:02.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:14db]   Driver: pcieport
Group:  5   0000:00:03.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14da]
Group:  6   0000:00:04.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14da]
Group:  7   0000:00:08.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14da]
Group:  8   0000:00:08.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:14dd]   Driver: pcieport
Group:  9   0000:00:08.3 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Device [1022:14dd]   Driver: pcieport
Group:  10  0000:00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller [1022:790b] (rev 71)   Driver: piix4_smbus
Group:  10  0000:00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022:790e] (rev 51)
Group:  11  0000:00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14e0]
Group:  11  0000:00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14e1]
Group:  11  0000:00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14e2]
Group:  11  0000:00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14e3]   Driver: k10temp
Group:  11  0000:00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14e4]
Group:  11  0000:00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14e5]
Group:  11  0000:00:18.6 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14e6]
Group:  11  0000:00:18.7 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Device [1022:14e7]
Group:  12  0000:01:00.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Upstream Port of PCI Express Switch [1002:1478] (rev 11)   Driver: pcieport
Group:  13  0000:02:00.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 XL Downstream Port of PCI Express Switch [1002:1479] (rev 11)   Driver: pcieport
Group:  14  0000:03:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 32 [Radeon RX 7700 XT / 7800 XT] [1002:747e] (rev c8)   Driver: vfio-pci
Group:  15  0000:03:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 31 HDMI/DP Audio [1002:ab30]   Driver: vfio-pci
Group:  16  0000:04:00.0 Non-Volatile memory controller [0108]: MAXIO Technology (Hangzhou) Ltd. NVMe SSD Controller MAP1602 (DRAM-less) [1e4b:1602] (rev 01)   Driver: nvme
Group:  17  0000:05:00.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Upstream Port [1022:43f4] (rev 01)   Driver: pcieport
Group:  18  0000:06:00.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  19  0000:06:04.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  20  0000:06:05.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  21  0000:06:06.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  22  0000:06:07.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  23  0000:06:08.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  24  0000:06:09.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  25  0000:06:0a.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  26  0000:06:0b.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  27  0000:06:0c.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  28  0000:06:0d.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset PCIe Switch Downstream Port [1022:43f5] (rev 01)   Driver: pcieport
Group:  29  0000:0c:00.0 SATA controller [0106]: ASMedia Technology Inc. ASM1062 Serial ATA Controller [1b21:0612] (rev 02)   Driver: ahci
Group:  30  0000:0e:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 05)   Driver: r8169
Group:  31  0000:0f:00.0 Network controller [0280]: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter [14c3:0616]   Driver: mt7921e
Group:  32  0000:10:00.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset USB 3.2 Controller [1022:43f7] (rev 01)   Driver: xhci_hcd
Group:  33  0000:11:00.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] 600 Series Chipset SATA Controller [1022:43f6] (rev 01)   Driver: ahci
Group:  34  0000:12:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Raphael [1002:164e] (rev ca)
Group:  35  0000:12:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Rembrandt Radeon High Definition Audio Controller [1002:1640]   Driver: snd_hda_intel
Group:  36  0000:12:00.2 Encryption controller [1080]: Advanced Micro Devices, Inc. [AMD] VanGogh PSP/CCP [1022:1649]   Driver: ccp
Group:  37  0000:12:00.3 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Device [1022:15b6]   Driver: xhci_hcd
Group:  38  0000:12:00.4 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Device [1022:15b7]   Driver: xhci_hcd
Group:  39  0000:12:00.6 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller [1022:15e3]   Driver: snd_hda_intel
Group:  40  0000:13:00.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Device [1022:15b8]   Driver: xhci_hcd

The Windows VM config looks like this:




Am I missing any steps or configurations?