Well, the output line with "unknown device 038a" in it indicates you have the same model as "askel" posted about at that alsa bug page I linked to earlier, I'd guess.
You might want to try the latest alsa release candidate for 1.0.10 or the cvs version, because there seem to be a lot of fixes for "ALC880" related things, which I think is what you've got (at least the z71v model seems to go under ALC880 - quite where ALC880 comes from I've no idea, though Realtek refer to that in their readme).
You might want to try the latest alsa release candidate for 1.0.10 or the cvs version, because there seem to be a lot of fixes for "ALC880" related things, which I think is what you've got (at least the z71v model seems to go under ALC880 - quite where ALC880 comes from I've no idea, though Realtek refer to that in their readme).




