the first thing to do is to turn off IEC958 Default PCM since this switch enable/disable the sharing of the default PCM stream with analog and SPDIF outputs. if you want exclusive acccess for AC3 passthrough
https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda?id=9a08160bdbe3148a405f72798f76e2a5d30bd243 Simple mixer control 'IEC958 Default PCM',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1264609 Title: No AC3 paththrough with hda intel ALC887-VD Saucy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1264609/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
