[ubuntu] Asus A54H Sound control not working

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http://ubuntuforums.org – Hi guys, Everything on my Ubuntu 12.04 installation works absolutely fine except the volume control. It "functions" but only as mute/unmute in that anywhere on the bar is full volume (the volume doesn't actually change) except when I actually go down to mute it in which case it does what it's supposed to and mutes. Anyone have any idea? Any help would be greatly appreciated. (Hardware)