[ubuntu] show hdmi out in sound output window

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http://ubuntuforums.org – it used to be that when I plugged in my laptop to an hdmi cable that he hdmi sound output automatically showed up under the all settings, sounds, output tab. Unfortunately, it didn't automatically start sending sound through that but it wasn't a big deal to pull up the sound settings and click on that output so that sound would start coming out of the TV. Recently (maybe there was an update), I have to log out and then log back in once I plug the hdmi cable in in order for it to show up on that list. I am wondering if there is some command line "restart ..." type command that (Hardware)