Well, upstream now has a subwoofer quirk for your machine, so this should fix the alsa level if you install the latest drivers ( https://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS ).
Then the PulseAudio stuff remains, where my recommendation is to add the stuff as suggested here: https://www.mail-archive.com/pulseaudio- disc...@lists.freedesktop.org/msg08737.html I e, you should add this section in /usr/share/pulseaudio/alsa-mixer /profile-sets/default.conf and extra-hdmi.conf : [Mapping analog-surround-21] device-strings = surround21:%f surround40:%f channel-map = front-left,front-right,lfe,lfe paths-output = analog-output analog-output-lineout analog-output-speaker analog-output-desktop-speaker priority = 8 direction = output -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1040873 Title: [N56VZ, Realtek ALC663, Black Headphone Out, Right] No sound at all: Subwoofer not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1040873/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
