Don't know if I missed something, but it feels like I tried everything.
1. No audio codec under 10.11. Working fine in 10.8.5 with Multibeast ALC889
2. OS X 10.11, GA-Z68X-UD3H-B3, BIOS F10, I7 2700K, ASUS GTX 660 Ti 2Gb
3. cloverALC-110
4. Attached
5. Attached
6. N/A
7. N/A
8...