Hello, I have a Mac Pro (10.9.5) with Decklink 4K Extreme feeding a NEC DCI projector over dual-link 444 SDI.
During the last two versions of Resolve on Mavericks I have to use Desktop Video 9.9.3, if I install any version above, there's no audio out from Resolve. I checked other programs, they sound fine, and every audio related setting on Resolve, VU meters shows signal, but no there's no sound out of the SDI card. With 9.9.3 it works fine, but don't feel that driver version 100% stable on Mavericks.
Somehow unrelated, but I tried the 12-bit monitoring option and well, there's no sound or image output and playback start to run at 30 fps in a 24 fps (and 24 fps monitoring) project. I revert it to 10-bit and it works fine.