The sound has stopped working on my 28 inch monitor

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Level 1

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The sound has stopped working on my 28 inch monitor

I don't know if any one can help. My macbook pro has been working fine since I upadted the OS. But when I turned my computer on today it took forever to boot up and now the audio in my monitor does not work. I am using a macbook pro mid 2009 and a Apple 28 inch monitor. I have tried - System Pref - Audio - Output - but where it used to say 'Display Audio', there is only 'Internal Speekers' and all sound is coming out of my macbook. Logic has 'Display Audio' selected, but sound comes out of the macbook.

Any ideas?

Seb

Podcast to iTunes store-OTHER

Posted on Aug 1, 2012 2:50 PM

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Answer 1

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Lanny

Level 6

13,183 points

Aug 1, 2012 3:07 PM in response to sebgates

Not sure where you got an Apple 28 inch monitor, but the Apple 27 inch monitors had firmware updates to correct a situation similar to what you describe.

See: http://support.apple.com/kb/HT4293

Also: http://support.apple.com/downloads/#displays

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Answer 2

sebgates Author

Level 1

17 points

Aug 1, 2012 3:42 PM in response to Lanny

It must have grown an inch when I was not looking. Thanks for the answer, I will check the links tomorrow.

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Answer 3

Lanny

Level 6

13,183 points

Aug 1, 2012 3:45 PM in response to sebgates

I recommend downloading all that seem applicable. The installers won't actually run if they're somehow not applicable.

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Answer 4

sebgates Author

Level 1

17 points

Aug 3, 2012 9:55 AM in response to Lanny

Hi Lanny, I am not sure if you can help but I had all the latest firmware updates for my monitor. 'Display Audio' is not appearing in the audio section of System Preferences. Any idea before I carry this very heavy monitor to the Apple Store?

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Answer 5

Lanny

Level 6

13,183 points

Aug 3, 2012 10:08 AM in response to sebgates

Verify that the monitor's USB connection is plugged into a working USB port. The audio is carried by the USB cord. Should look something like this:

Note: If you have anything plugged into your Mac's analog audio output, you won't be able to select Display Audio. It will just bounce back. In the case of my MacMini, it's called the Headphones.

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Answer 6

sebgates Author

Level 1

17 points

Aug 3, 2012 10:07 AM in response to Lanny

Thanks, I don't know what happened there. I tried unplugging the cables yesterday and nothing happened. For some reason, it worked today and the Display Audio is now visable in System Pref. Thanks again. I probabaly would have disclocated my sholder lumping this aluminum monitor 1km to the Apple Store!

Nice one bro - Seb

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Answer 7

Lanny

Level 6

13,183 points

Aug 3, 2012 10:11 AM in response to sebgates

It may have been that reconnecting the USB was needed after the firmware updates were applied.

But, wait, you said that you had all of the updates, cancel that thought.

Message was edited by: Lanny

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