Windows 10, RX 480 GPU Passthrough

Mar 2, 2019
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Last week I did a fresh proxmox install with uefi. Later I built a windows vm with uefi. I am now attempting gpu passthrough.

  • I have disabled the gpu on boot via vfio.
  • Patched grub with iommu for intel
  • I have disabled drivers, per the gpu passthrough wiki article via modprobe.d
  • I have enabled the current and most accurate msi rom for my driver (which seemed to help it bios post)
  • I have installed rx 480 drivers on the windows vm
  • Yet the device is code 46 in windows, crashed, and doesn't post windows screens
It seems as thought my pci host bus adapter and my gpu share iommu group 1, could this be the cause of my instability?
 

cromatn5

New Member
Mar 26, 2018
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France
I don't think this is the issue, like you my GPU share the group 1 with pci bridge

IOMMU Group 0 00:00.0 Host bridge [0600]: Intel Corporation Device [8086:5918] (rev 05)
IOMMU Group 10 04:00.0 Ethernet controller [0200]: Intel Corporation I210 Gigabit Network Connection [8086:1533] (rev 03)
IOMMU Group 11 05:00.0 Ethernet controller [0200]: Intel Corporation I210 Gigabit Network Connection [8086:1533] (rev 03)
IOMMU Group 1 00:01.0 PCI bridge [0604]: Intel Corporation Skylake PCIe Controller (x16) [8086:1901] (rev 05)
IOMMU Group 1 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:6985]
IOMMU Group 1 01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:aae0]
IOMMU Group 2 00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller [8086:a12f] (rev 31)
IOMMU Group 2 00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-H Thermal subsystem [8086:a131] (rev 31)
IOMMU Group 3 00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-H CSME HECI #1 [8086:a13a] (rev 31)
IOMMU Group 4 00:17.0 SATA controller [0106]: Intel Corporation Sunrise Point-H SATA controller [AHCI mode] [8086:a102] (rev 31)
IOMMU Group 5 00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #5 [8086:a114] (rev f1)
IOMMU Group 6 00:1c.5 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #6 [8086:a115] (rev f1)
IOMMU Group 7 00:1c.6 PCI bridge [0604]: Intel Corporation Sunrise Point-H PCI Express Root Port #7 [8086:a116] (rev f1)
IOMMU Group 8 00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point-H LPC Controller [8086:a14a] (rev 31)
IOMMU Group 8 00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-H PMC [8086:a121] (rev 31)
IOMMU Group 8 00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-H SMBus [8086:a123] (rev 31)
IOMMU Group 9 02:00.0 PCI bridge [0604]: ASPEED Technology, Inc. AST1150 PCI-to-PCI Bridge [1a03:1150] (rev 03)
IOMMU Group 9 03:00.0 VGA compatible controller [0300]: ASPEED Technology, Inc. ASPEED Graphics Family [1a03:2000] (rev 30)
Try to blacklist "amdgpu"
 

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