smoothop

my mother board dsdt dsdt.zip

Hi i was wondering if you could help me. I have the same Graphics Card. I have finally just installed Yosemite on this board "Rampage iv Extreme" i have just created a DSDT file for my board. i insatlled yosemite with niresh Yosemite-zone install and it pretty much all works except the hdmi audio. it is listed in the sound options as the device being there. when highlighted no audio comes through my amp. just to check my amp i have plugged my laptop in to the amp to test hdmi and i get both pic and audio.