Thanks for your report. THis is a known problem that should be fixed in a new kernel update, due in the coming weeks. A work-around for now is to install the latest drivers as oultined here: https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules.
** Changed in: alsa-driver (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/804725 Title: [A3AC, Realtek ALC880, Black SPDIF Out, Internal] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/804725/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs