Since my Cinema Display is both connected through mDP and USB, I can (stupidly enough) both choose “LED Cinema Display” or “Display Audio”. Also, I never use the internal speakers since they sound ...
Possible Duplicate: Can I get sound out of both iMac and attached Thunderbolt Display? I have a macbook pro 2009 model, and a 24' apple cinema display. When the USB is connected the audio ...
I connected my new Cinema Display to my MacBook Pro and the audio output device shows "LED Cinema Display" in Sound Preferences, and the volume controls work, but no sound is output. I tried ...