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Lost Sound or USB connectivity from your Thunderbolt display

Try this, when you notice that the sound does not work, see if any USB devices attached to the display work also... printers etc?


I noticed that when the sound was not working, my Iphone that was plugged into the TB display rear usb port was not charging or picked up in Itunes.


1. Leave display powered up but just disconnect thunderbolt cable from computer

2. You will hear a noise from the iphone as it now starts to charge

3. Plug the thunderbolt cable backinto the macbook

4. The iphone may stop charging for a a few seconds but it will start charging again AND the sound will be back.

5. No restarting of macbook required.


I only noticed this as I have a printer attached via usb to the display and wondered why it was not being displayed as been online when it clearly was. Not sure if it will work with other USB devices if you don't have an iphone though.


I hope it helps some as it was wrecking my head for ages!!

Thunderbolt Display-OTHER

Posted on Apr 11, 2012 5:34 PM

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Lost Sound or USB connectivity from your Thunderbolt display

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