Has anyone experienced the loss of audio output except for the USB port? If so what might I try to fix the problem?
Ever had anything plugged into the sound out port, sometimes the jack doesn't close properly?
Have you done a PRAM reset, CMD+Option+p+r...
In fact, do 3 in a row, takes a bit of time.
Open Audio Midi Setup in Applications>Utilities, see the input & output options & KHz setting there, some things will change it for their own use, then not set it back.
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