For what it's worth it does not appear to be fixed in the latest 8.10
alpha.

The only Fn key combinations that work as expected on my X61s is:
- Mute
- Volume up/down (only for unmuting - the actual volume level does not change)
- Keyboard light
- Radio on/off (WLAN+Bluetooth toggle)

I suspect most of these are handled by hardware.  I know that at least
before brightness up/down and suspend worked in earlier versions of
Ubuntu, and kind of miss those...  I think volume up/down used to work
too.

I can see most of the buttons generate ACPI events when pressing with
acpi_listen running, the brightness buttons also generate lines starting
with «video LCD0» as well as the normal «ibm/hotkey HKEY» ones.

There's a few exceptions though, the volume up/down and mute buttons
does not generate events that are visible from acpi_listen, neither does
the back/forward/play/pause/stop ones.  All of these (except mute)
generate X key presses that can be seen with xev, all NoSymbol.

Hopefully this'll work come October...

Tore

-- 
[hardy] IBM Thinkpad (T23): no OSD indication for volume control, display 
inhibit or thinklight
https://bugs.launchpad.net/bugs/198197
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