I have added a screenshot with Headphones plugged in. From here you can see there is only one Analog audio output. The jack port on my Computer doubles up as a digitial out as well. Could there be a conflict with HDA Intel Analogue and Digital detection???
** Attachment added: "ScreenShot with Headphones plugged in" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/941219/+attachment/3115263/+files/Screenshot%20from%202012-04-29%2014%3A10%3A27.png -- 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: Speaker Sound does not disable when Headphones are connected. Ubuntu 12.04 LTS Official Release 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
