I shall file a bug against Pulseaudio with the subject.
Pulseaudio enables Surround 4.0, while chmap reports no RL and RR.
While waiting for the Pulseaudio result, do you think it is a good idea
to send your Alsa patches upstream, so at least some of the functionality start working soon?
If so, do you guess this patch will be available in v4.2 or v4.3?
Do dell-headset-multi really work as expected ?
http://voices.canonical.com/david.henningsson/2014/03/07/headset-jacks-on-ne...
Seem need popup dialog to set the combo jack type correctly when you are using headset or conventional mic
Do "pactl list sinks" show the headphone port since your alsa-info did not have any Headphone Jack kctl ?
Your pulseaudio log only have surround21 profile but no message about lfe filter enabled
pa_log_debug(" lfe filter activated (LR4 type)");
http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/?id=979f19a434733af...