[alsa-devel] AD1988B: ALSA doesn't use dmix automatically

ALSA 1.0.15

http://alsa.opensrc.org/index.php/Dmix

NOTE: For ALSA 1.0.9rc2 and higher you don't need to setup dmix. Dmix is enabled as default for soundcards which don't support hw mixing.

So why if I try to play 2 sounds at the same time, the second one complains the "resource is busy"? Shouldn't it detect that AD1988B can't do hardware mixing and use dmix automatically?

Obs.: I don't have any ~/.asoundrc or /etc/asound.conf lying around.

Thanks!