I've upgraded my system to Edgy. There is no change for better considering the reported problem. As far as I can tell now there is no signal for rear speakers available from either output or input. And still no mixer for headphone output.
-- HDA Intel sound card controls - regression https://launchpad.net/bugs/48004 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs