Running Mac OSX Lion on a brand new Mac Pro. It's connected via a Kramer optical DVI cable to a Christie HD8K projector.
We turn the projector off at night, but leave the computer running its video program. We find that when we check in the morning, and turn the projector back on, there's image but no sound. We need to go to sound preferences and click on the Firewire Solo (even though it's still selected) in order to get the sound to come back.
Thanks in advance.