Audio from headphone jack stops working.

Hello.
When I play back audio on my MacBook pro in Traktor Pro, iTunes or even VLC it comes out my internal speakers like normal. If I plug my headphones in it will start coming out my headphones like it should and if I unplug them it comes back out my speakers again and it all seems to be ok. However if I close the lid and let the computer sleep, when I wake it up it will play audio out the speakers but if I plug my headphones in again they won't work and the sound will continue to come out of my internal speakers (while headphones are still plugged in). If I go into my audio settings it just says internal speakers and when I plug my headphones in it goes away and then the computer says it has no Audio device installed, if I goto adjust my volume with the key on the keyboard I get the speaker with the circle with the slash thought it if as to say volume cannot be done. The only way for me to get sound back from my headphones is to restart the computer. I don't know why it is doing it and have no idea what would be causing this. Is anyone able to help me out with this.? It's so frustrating having to restart my machine all the time as I am a DJ and run my DJ software and deck controllers from it. I have a mid 2011 17" MBP running Lion osx 10.7.2 (all software up to date as of 05-01-12) 8GB Ram.
Cheers :)

I have a mid 2011 17"
You are still under warranty. Call Apple Care.
Take FULL advantage of your warranty. Posting on a message board should be done as a last resort and if you are out of warranty or Apple Care has expired.
Solution may be found if you search in the "More Like This" section over in the right column.

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HT2494 iMac headphone jack stopped working

Hi folks
The headphones are not working any more on my iMac and nothing has apparently changed. They were working yesterday.
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AndyO wrote:
By the way, when external speakers are connected, would you normally expect
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IMac headphone jack stopped working (Part 2)

Following my earlier post 2 days ago, even though it seems I'm just talking to myself, - just in case anyone is interested out there:
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It is SOOOOOOO frustrating .
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Thanks OT
I tried booting into the Recovery volume selecting Disk Utility and repairing both disk permissions and the disk. Still no change.
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Befuggled

Audio from headphone jack stops working.

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