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I am very new to Ubuntu and linux as I have used windows only until yesterday.

I am attempting to send my audio signal to my pioneer receiver using a single digital optical cable which is plugged into my M2N SLI Deluxe motherboard.

I am sending video with a Geforce 8600GT video card through HDMI. That card does not support audio through HDMI.

The only thing I have got to work so far is my left channel speaker acts as a stereo left and my sub woofer is trying to act as a stereo right.

I was able to achieve this through altering the alsamixer settings. Can anyone point me in the right direction on this?

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possible duplicate of 2 channel sound when 5.1 is expected – Takkat Jun 3 '12 at 8:45
up vote 1 down vote accepted

pavucontrol is a great tool to control where your audio should go.

Install it with

sudo apt-get install pavucontrol

Control by application: enter image description here

Control by output device: enter image description here

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I think this will work. It was a combination of getting to know my reciever better and this program helping me have more precise control over the outputs. Thanks – iwhorl Jun 3 '12 at 22:13
If it answers your question, then you can accept this. – Anwar Shah Jun 15 '12 at 9:19

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