ProxMox 6.2-4 - IOMMU not present

Software & Operating Systems Linux
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1

Hello, I have gone through several YouTube tutorials on GPU Passthrough step by step with several different W10 VMs that i’ve created each time.

Each would end up with the same conclusion when trying to start the VM:
“Error: IOMMU not present”

Here is my Grub:

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=“Proxmox Virtual Environment”
GRUB_CMDLINE_LINUX_DEFAULT=“quiet intel_iommu=on”
GRUB_CMDLINE_LINUX=""

I’ve also tried:
GRUB_CMDLINE_LINUX_DEFAULT=“quiet intel-iommu=on pcie_acs_override=downstream,multifunction video=efifb:eek:ff”

Also, when selecting the PCI Device from the dropdown, I see 4 Nvidia devices, but none show my GPU (RTX 2080ti)

Anyone have any ideas? I’ve spent so many hours already (also this is my first proxmox server).

Thanks!

2

Does cat /proc/cmdline show the changes you added to grub? If not, review the Proxmox host Bootloader docs to make sure you’re adjusting your command line correctly.

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