I've got a similar Macbook and I've noticed a similar thing. If I enable the 'front' volume channel (normally disabled) then I get stuff coming out of the right speaker - but this is not controlled by the master volume control, it's completely separate.
I'll go through the debugging steps to see if I can find anything more useful. jonh -- Unable to mute sounds in Feisty https://bugs.launchpad.net/bugs/106862 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs