@TeddyAstie Thanks for the update.
I do actually have a VBIOS for that GPU, but I wasn't entirely sure what to do with it - is there a process to inject it? I've found resources for Proxmox and others, but I really like XCP and equally I don't want to migrate my entire setup just for that.
If it's really tricky then I'm not too worried about it, as I say the VM actually runs the cameras perfectly fine on CPU alone, it's negligible.
Edit: Looks like this post might answer my question: https://github.com/xcp-ng/xcp/issues/786
"Even when specifying romfile and rombar properties on the xen-pci-passthrough device in QEMU, the ROM region is not mapped into guest memory."
timemaster5 created this issue in xcp-ng/xcp
open
PCI ROM BAR not exposed to guest when using xen-pci-passthrough
#786