I have a T430 running 12.10 and can confirm that the key is not working.
xev outputs nothing when the key is pressed/released.
acpi_listen outputs:
ibm/hotkey HKEY 00000080 0000101b
input-events 5 outputs :
EV_MSC MSC_SCAN 26
EV_KEY KEY_MICMUTE (0xf8) pressed
EV_SYN code=0 value=0
EV_MSC MSC_SCAN 26
EV_KEY KEY_MICMUTE (0xf8) released
EV_SYN code=0 value=0
Not quite sure what course of action I should take, but I found this
page (http://askubuntu.com/questions/125367/enabling-mic-mute-button-
and-light-on-lenovo-thinkpads), and it seems like a very similar
solution to that of Chris Van Hoof's.
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-input-evdev in Ubuntu.
https://bugs.launchpad.net/bugs/408903
Title:
Does not handle microphone mute button (KEY_MICMUTE)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/408903/+subscriptions
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