I have a mac pro that I use with FCP. One day it captured xlr audio and sd video, the next it only captured video. I can confirm there is audio in the line up to the breakout cable. I sent the card and cable back to support and they said it works. I got it back and reinstalled all drivers. Still nothing. Nothing in the system preferences/audio in. I put the card in another mac pro and installed new drivers. Same thing--video fine, no audio in preferences or FCP.
I've seen several posts here concerning audio stopping, but no resolution. What can I try now?