My Toshiba C800 laptop (12.04 LTS desktop) has special function keys as follows:
fn + :
- F2 -> BRIGHTNESS DOWN
- F3 -> BRIGHTNESS UP
- F4 -> DISPLAY SELECT
- F5 -> TOUCH PAD on/off
- F6 -> PREVIOUS
- F7 -> PLAY/PAUSE
- F8 -> NEXT
- F9 -> VOLUME DOWN
- F10 -> VOLUME UP
- F11 -> MUTE
- F12 -> WiFi on/off
F6 to F11 (media player keys) work correctly, but the keys from F2 to F5 and F12 are not working.
Why would some function keys work, but not others? What can be done to fix this?