DSDT-P55-UD5 - Bios F7 - Freshly Edited

[WillSmash]

Aha! Just tried putting the HDAenabler kext in as you suggested (which would also imply also that the DSDT installed by multibeast is not working properly on my machine) and I got audio for th first time!

Here's the bad news, I had to connect to the front headphone jack as non of the back ports worked.

Onwards and upwards.

 

[thelostswede]

Wow, you're the first one that hasn't gotten that to work.
Something must've gone wrong somewhere, so a re-install might be your best bet.
Just one thing, have you tried VoodooHDA and does that work?