[SOLVED] No IOMMU groups

[Jonza]

Hi All,

Very new to proxmox, I've done installed everything seem to go fine, started to create my VM and pass some devices to it but I get the error no IOMMU groups detected.

Everything seems to be fine in the BIOS (asRock H370M-ITX - Intel Core i7 8700) VT-d enabled when I check the IMMOU groups all devices are in one group...

I booted up unraid (normally what I run on this server) and it shows IOMMU enabled and I check the devices and there in seperate groups? so from what I can gather my hardware supports IMMOU just fine?

I'm I missing a step or something?

Thanks in advance.

 

[leesteken]

What is the output of cat /proc/cmdline? Is intel_iommu=on present? Otherwise you need to add it for an Intel system, even if the kernel is 5.15 or higher.

 

[Jonza]

What is the output of cat /proc/cmdline? Is intel_iommu=on present? Otherwise you need to add it for an Intel system, even if the kernel is 5.15 or higher.

Thanks this sorted it