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[ubuntu] Media Key causes unity freeze (lemur ultra)

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linux-howto

http://ubuntuforums.org – I have a pretty new system76 lemur ultra running ubuntu 12.10. I've noticed a VERY annoying bug with the lemur ultra's play/pause key and unity. At first I thought this was a rhythmbox bug but it happens with every single media player: About 50% of the time when I use the play/pause key on the keyboard (fn + `), it causes unity to semi-freeze, I can't click on any indicators and the dash won't open, but I can mouse over stuff on the launcher and tooltips show. The freeze lasts until I hit the media key again, also when the bug triggers the media key doesn't have any effect on play/pause until (Hardware)