FWIW I'm not using pulseaudio, so no pactl here. 2.1 works fine since the discovery of the subwoofer pin.
Attached are the requested alsa-info.sh outputs. Not sure about what you mean if the subwoofer needs both left and right channel: If it's that if I could use the subwoofer alone without the speakers, that's doable, it's just a matter of muting "Speaker" and leave "Bass Speaker" on, and then I have output just from the subwoofer. If it's that if I can control left and right channels for the subwoofer itself, I can, using the hda_analyzer at the node 0x1a, under the output amplifier group "Val[0]" seems to mute a half of the subwoofer and "Val[1]" mutes the other, seriously I don't know how that happens, I always assumed the subwoofer to be a single speaker, but there it is. As an additional note, the subwoofer is tied up to the Audio Mixer at node 0x0e (Attached hda_analyzer screenshot as well for it), muting "Val[0]" mutes all left output (as in Speakers, Subwoofer) and "Val[1]" does the same but with the right channel. Thanks again. ** Attachment added: "alsa-info.unplugged-mono.txt" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1302090/+attachment/4087687/+files/alsa-info.unplugged-mono.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1302090 Title: Dell Alienware 14, Speaker sound output is mono until a headphone jack is plugged To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1302090/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs