I have a similar problem on my Toshiba A105 laptop. Intel HD Audio, Realtek 861 chipset. Audio was working with Herd4 and not in Herd5 or Beta.
-- [herd5,alsa] no sound (and no microphone), snd_hda_intel, realtek - regression from herd3 https://launchpad.net/bugs/89552 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
