For now, you can change audio 1 in init.cfg to audio 0, so AC will at least run (without sound, of course).
Other than that, IDK. You can try installing debug symbols for ALSA. Other than that, I'd say you should better ask on the Ubuntu forums, as this seems more like an OS+Driver+HW bug. Also, the guys there definitely know a lot more than I do.
Other than that, IDK. You can try installing debug symbols for ALSA. Other than that, I'd say you should better ask on the Ubuntu forums, as this seems more like an OS+Driver+HW bug. Also, the guys there definitely know a lot more than I do.