you need to ask Tiwai how to make the driver only support 4 channels and 2.1 mapping when subwoofer is plugged
the current implementation assume internal 2.1 speakers but your n56vz has stereo internal speaker and a external subwoofer https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda/patch_realtek.c?id=ee81abb623cb5e03c182d16871bb4fb34fdc9b4f + if (spec->autocfg.line_out_type == AUTO_PIN_SPEAKER_OUT && + spec->autocfg.line_outs == 2) + info->stream[SNDRV_PCM_STREAM_PLAYBACK].chmap = + snd_pcm_2_1_chmaps; -- 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
