I am also having the same issue; with an Inspiron 1526 - I have not tried to dig into it too much, I just happened across this thread, and decided to add my alsa-info output as well..
I am also having the same issue; with an Inspiron 1526 - I have not tried to dig into it too much, I just happened across this thread, and decided to add my alsa-info output as well..