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Mitch 751 Level 6 Level 6 (11,500 points)

I have a mid 2009 MBP, it worked great on 10.6.8, but after installed 10.7, the audio icon gray out, and showing "The selected device has no output control".

 

It does has sound when boot up, and sound effect is no problem, only the output does not work.

 

I have to connect my earphone into the jack, and the error message of "The selected device has no output control", disappreared. After that unplug the earphone, everything works. However, once I reboot, the problem remains.

 

I brought it for service, and they claimed it was a software issue and they could not do anything. They suggested me to reinstall the Lion again.

 

When I rolled up to 10.6.8 everything worked, but once upgraded to 10.7, the problem was back.

 

I have reinstalled three times, however, the problem remains.

 

Any suggestion ?

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