Hi All, While digging through Microsoft Surface Go ACPI tables to fix an unrelated issue, I noticed that there is an intel-wmi-thunderbolt WMI device in the ACPI tables and the intel-wmi-thunderbolt driver happily binds to this. This is likely the result of copy paste programming of the ACPI tables. This causes a /sys/bus/wmi/devices/.../force_power attribute to be created and echoing to that executes ACPI code which ends up poking at things it should not be poking at on the Surface Go. The problem of having these "nonsense" WMI devices with the intel-wmi-thunderbolt GUID is likely more wide-spread and ideally the intel-wmi-thunderbolt would ignore these. This makes me wonder if there is a way to see if there are any thunderbolt controllers on the system at all ? (with as goal to make intel-wmi-thunderbolt not bind if there are none) Regards, Hans