Sorry of my englisch. A solution till the bug is fixed.
Plug in headset. Go to audio settings. choose hardware/output profil and go to "no audio" or "off".. dont know whats there in englisch. After that choose in same line "stereo" and audio works normal in headset. speakers are off. Same solution if you want audio back to speaker. Plug of headset. Go to audio settings. choose hardware/output profil and go to "no audio" or "off".. dont know whats there in englisch. After that choose in same line "stereo" and audio works speakers are on. Here it works. hope you too? -- 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