I can confirm this. On the same sound hardware (in a macbook), I cannot hear any sound output from internal speakers or over a set of headphones (perhaps due to lower-power speaker/headphones) and am missing the same audio channels.
-- alsa mixer channels missing after upgrade to linux-image-2.6.22-10-generic with Intel 82801G HDA chip https://bugs.launchpad.net/bugs/134252 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