Hi toleda,
I like the nice structure of your work - thanks for that; was easy to follow along.
Nevertheless, DP Audio doesn't work for me.
Problem Reporting
1.
Monitor-integrated speakers didn't show up under OSX audio preferences. Monitor is connected via DP port on Nvidia GTX 960. Onboard video is deactivated (BIOS). Nvidia Web driver (346.03.02f02) is installed and GTX is working under OSX.
2.
OSX 10.11 (El Capitan)
Gigabyte GA-H97M-D3H, BIOS version: "F6" (04/21/2015)
Intel i5-4590S (3GHz)
Gainward Nvidia GTX 960 Phantom 4GB
Clover revision 3270
3.
AMD/Nvidia HDMI Audio [Easy Guide], v1
4.
attached
5.
Unfortunately, "all messages" is empty for unknown reasons. I attach system.log since reboot.
6.
attached
8.
8.1: attached
8.2: attached
8.3: not installed
8.4: attached
Looking forward to your analysis!
Cheers,
Xevven