look this Image. http://img839.imageshack.us/img839/7145/bildschirmfotovom201205.png
In Profile I can choose "No Audio" After that, I choose audio stereo again and sound is back again. hope it works .. ;) -- 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
