No sound from Thunderbolt display

2011 15" Mac Book Pro with 27" Thunderbolt Display

The video/display side of the device works perfect.

This is a very frustrating issue with the sound and this display. Some times the sound will transfer from the laptop and be outputted from the display... sometimes it wont. Some times I have to disconnect every thing, plug out the monitor.... turn it back on and then replug in the laptop and then it starts to work. If this doesnt work, a restart of the laptop works.

Very frustrating considering it is designed to "work seemlessly"

As I type this, (via the thunderbolt display) itunes is playing througn the laptop speakers. I go to system pref and in the sound output options, there is NO OPTION for display output etc. As you can see from the screen grab below...

Any help please?

etc.... jus

iPhone 3GS

Posted on Jan 20, 2012 3:51 AM

62 replies

Oct 24, 2015 2:56 PM in response to richiebuttle

I was able to fix the problem by unplugging the power connector to the macbook air I have paired with my thunderbolt display. No problems then forward. I suspect this has to do with something in the power connector shorting.

My setup:

Apple Thunderbolt Display (bought in 2015 - most recent model)

Macbook Air (bought in 2014 - 1 generation older than most recent model)

Sep 3, 2016 10:40 PM in response to TheresAni7InMyMac

Great work TheresAni7

This worked for me hold ALT/OPTION then click the volume icon in the menu bar top RHS and select display audio.

Frustrating but now solved - thanks!

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No sound from Thunderbolt display