What you show in the image is for Audio Duplex not Audio Mute. This feature you speak of just configures the speakers and input to be configured differently.
I have tested this and still the issue remains where Auto-Mute mod is missing. Thank you for your efforts dreamon -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/941219 Title: [Acer Aspire 8930G] Speaker Sound does not mute when Headphones are connected. Ubuntu 12.04 LTS. Missing Auto-Mute Mode in alsamixer. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/941219/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
