Comment 38 for bug 1236965

@Raymond in #25 , can you explain what you want me to do here a little more? I do not really understand your request.

@David in #26, "Where do I specify my audio-profile?" There should be a way to select profile - in Gnome sound settings it's a combobox called Mode:

I do not see this combobox of which you speak. Are you talking about the righthand pane of the output-tab, when I have clicked on speakers-built-in? It still believes there are only two channels.

@David in #26, in pavucontrol it's on the config tab.

Here there are two dropdowns, one for the 'built-in audio' which is the realtek alc892, with the default settings Analog Stereo Duplex, the others options being Analog Stereo Output, Digital Stereo (IEC 598) Output Plus Analog Stereo Input, Digital Stereo (IEC 598) Output, Analog Stereo Input, Off. (in other words no mention of internal 5.1 onboard speakers that I can tell).

The other dropdown, for the hdmi-oriented soundcard-chip on the discrete gpu, defaults to Digital Stereo (HDMI) Output, with the only other option being Off.

@Raymond in #27, sorry, I am not sure I know what you want me to do. Can you spell it out a bit more please?
In particular, do you suggest that I follow the 2010 instructions for installing the local alsa crackle-of-dawn driver... or does the dotdeb which david provided contain the changes you were wanting me to make?

@David in #29, have installed the dotdeb. This also required that I first $ sudo apt-get install dkms -- see attached build-log.
Will reboot, and then let you know what happens in the next comment. Stay tuned for the next exciting episode.