I'm having the same issue with my IBM/Lenovo T60p laptop.
Fn+F2 (lock) not working Fn+F3 (bat) not working Fn+F4 (sleep) not working, works with kscreensave runing Fn+F5 (wifi) works
Brigthness buttons work but don't show the GUI vol up and down are working with gui vol mute mutes the sound but also increases the volume
Kubuntu Intrepid AMD64
I'm having the same issue with my IBM/Lenovo T60p laptop.
Fn+F2 (lock) not working
Fn+F3 (bat) not working
Fn+F4 (sleep) not working, works with kscreensave runing
Fn+F5 (wifi) works
Brigthness buttons work but don't show the GUI
vol up and down are working with gui
vol mute mutes the sound but also increases the volume
Kubuntu Intrepid AMD64