No sound on MacBook Pro using audio interface AFTER installing OSX Mavericks
Here's what happened to me after I called Apple and then called Roland who's Quad Capture was giving me NO playback.
Your issue was that when your Quad capture (UA55) was connected to your MacBook you couldn’t hear any playback.
To check this I did the following:
Checked your system profiler – USB – To make sure the Unit was being “seen” by the computer.
Then checked system preferences – Sound – Input and output set to quad capture.
Next we checked your audio/midi manager. – We could see that your system was identifying the digital input and outputs as well as the analogue (audio) which is perfect,
Now in Logic Pro 9 we set up a basic 2 track audio and you played your bass in. to which you had input and output.
Still no output from iTunes or anything else though???
Having checked some information on potential issues I had was that some people with dual displays had problems outputting audio through a audio interface.
We unplugged the external display and re-booted. Straight away audio was working.
Plugging the display back in and audio still fine.
This was as far as we could go from here and Apple will now need to investigate for you.
I really hope this has helped you.
Best regards
Anonymous Roland support.
MacBook Pro, OS X Mavericks (10.9)