How can I enable auto-switching HDMI sound on Ubuntu 12.04?

Posted by João Ciocca on Ask Ubuntu See other posts from Ask Ubuntu or by João Ciocca
Published on 2013-02-20T04:10:42Z Indexed on 2013/10/22 4:09 UTC
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12.04

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sound

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hdmi

I've just installed Ubuntu 12.04 on my Lenovo G550 notebook and decided to test the main thing I use it for, on Windows: watching movies and series on my living room TV.

Plugged in the HDMI cable, screen auto-configured nicely - awesome. But the sound is coming through my notebook's speakers, instead of my TV.

Searched for almost an hour on Google, found a couple of things - nothing that helped, though. Here are two links that made me sad:

Another question on AskUbuntu

"a better sounding world" post about HDMI

On 2, David says that autoswitching was disabled... so how can I enable it?

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