Hi, in Mavericks my audio works fine, I installed ALC887/888b Current v0302 using multibeast.
But after updated to Yosemite and i did the same, it shows no output device.
My motherboard is Gigabyte B75M-HD3,
Codec ID 0x10EC0887, revision 0x0302
And i'm using clover bootloader.
Thanks...