June 1, 20215 yr Hi all, my board used to have no issues passing through PCI-E nics etc. to VMs but for some reason recently it's not working anymore and I don't know what's going wrong. I've tried all sorts, pci-stub vfio bind etc. I've ACS override on and off but not having much luck. My hardware configuration hasn't changed for years apart from adding an NVME drive maybe a year or 2 ago. Asrock say installing a drive here disables PCIE-5. When I go to Tools > System Devices it'sdownloadbox-diagnostics-20210601-1340.zip now saying "No IOMMU Groups Available" rather than listing all of the IOMMU groups like it used to.
June 1, 20215 yr Author Solved this myself, not sure how, as I haven't done a BIOS update for ages, but VT-D had become disabled in the BIOS. The server is on 24/7 but I guess it's possible that the battery is dead and it reset when I powered the server off?
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