Still something must be different on your setup compared to in my emulator. In my emulator, FRONT does not control headphones, and automute works. I'm attaching the emulator log, mostly for my own reference.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/871582 Title: M4A89GTD_PRO_USB3/Realtek ALC892, Green Headphone Out, Front] Playback problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/871582/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs