Comment 3 for bug 370553

Note also that, according to your "aplay -l" from that particular boot, hw:0 is the built-in HDA and hw:1 is the Live. Your pcm.!default {} snippet assumes hw:0, which is probably not what you intend. You can use the Live in two ways. One, you can use "surround51:1" instead of "surround51" in the pcm.!default {} snippet. Two, you can tell snd.ko, via a module parameter, that you always want the Live driver to occupy slot 0 (hw:0) with: echo options snd slots=snd-emu10k1,snd-hda-intel|sudo tee -a /etc/modprobe.d/always_sblive_default.conf