Hello, while trying to write my own WMI driver, i noticed that the WMI bus driver complained about duplicated WMI UUIDs. After doing some research, i think i found the reason for these messages: Apparently, the ACPI WMI specification by Microsoft treats the _UID of the WMI PnP-device like a namespace, which means that duplicate UUIDs are llegal if they do not share the same namespace (= PnP-device). In my case, only one wmi-bmof device is used, the rest is filtered out despite laying in a different namespace since they have the same UUID. Could it be theoretically possible to fix this issue with the WMI bus? Armin Wolf
