@kubuntu-newbie I've looked at the code. The intel passthrough seems to not care about the value of the vga key in platform, and instead it expects the key igd_passthrough to be set to true. https://github.com/xapi-project/xen-api/blob/9eb5f9f9f3c742c0c0b691098e1dafc02e40c856/ocaml/xapi/xapi_xenops.ml#L390