Michael van Elst wrote:
> dillo@danbala.ifoer.tuwien.ac.at (Dieter Baron) writes:
> 
>>  Fn+F5 seems to work on my notebook, even without the driver (at
>> least it toggles the Bluetooth light).
> 
> Older Thinkpads do it for you unless you use that driver, then the
> functionality needs to be supplied by the driver. Newer Thinkpads
> require the driver to use the hotkeys.

There is actually an ACPI method to tell the firmware which 
functionality is to be controlled by OSPM and which is to be controlled 
by the BIOS. It may be the case that the default mask has changed on 
newer hardware revisions.

Cheers,
Jared