I have the same problem with I82801DBICH4, though it doesn't work in 2.6.20-8 either.
It was discussed on kernel mailing list: http://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg107583.html and the recommended suggestion http://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg107686.html was reported to work. Could this be related? -- intel hda audio much too soft https://launchpad.net/bugs/88965 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs