Lenovo Thinkpads have a key to mute microphones. Add this so that we can tell gnome-settings-daemon to mute the mic and display a popup. For more info as well as the userspace packages: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-evdev/+bug/408903
Created attachment 65303 [details] [review] 0001-Add-XF86XK_AudioMicMute.patch
Pushed as: f1b8b4dd5e798 Add XF86XK_AudioMicMute
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