Having an issue with sound at the moment. I am trying to configure my 5.1 surround sound but it will only work on the Front left and Front right speakers. On the back of my motherboard I have 3x3.5mm jacks which I have connected the speakers to although these are not the right ports.
I want to "assign" the three ports on the back to each output (Sub and centre, Left and right, and rear left and right) although I'm not sure how to do this. My audio is ALC889 from Realtek and am using Ubuntu 12.04 with all updates installed.