I am currently running Ubuntu 11.10 with all updates.
I have been using Ubuntu very successfully on my MacBook Pro (5,5) for a few years now. I also have a Apple bluetooth keyboard. On the laptop keyboard and bluetooth keyboard I can use the extra function keys (volume, play, pause etc) as expected. And I get page up/down with Fn+Up and Fn+Down and start/end with Fn+Left and Fn+Right.
The other day I purchased a 2nd Apple bluetooth keyboard for use at work. It appears the same, although perhaps some upgraded components (my 1st one is ~2 years old). However none of the Fn options work nor the play/pause/volume.
This problem seems to be keyboard specific rather than Ubuntu-wide as I can use the Fn keys on my laptop keyboard, while simultaneously being unable to use them on my external bluetooth keyboard.
Any suggestions or ideas about where to start?
I think the bluetooth keyboards are linked to the MacBook Pro range, so perhaps I have the drivers installed for my laptop (MacBook Pro 5,5) and this new keyboard is similar to a newer MacBook Pro for which I don't have adequate drivers.