New MBP15 > Thunderbolt > TV hdmi, no sound?

Question

_Mac Author

Level 1

4 points

New MBP15 > Thunderbolt > TV hdmi, no sound?

Just bought the new MacBook Pro 15" and the Thunderbolt 27" display.

Problem:

Can't get MBP Audio out via the Thunderbolt port > minidisplay port > HDMI (v1.4 cabel) to TV or Projector.

Tested:

- MBP Video > Thunderbolt port > Minidisplay-adapter > Works ok.

- MBP Audio > Thunderbolt port > Minidisplay-adapter > no sound, just video.

- MBP Audio > Thunderbolt display works ok, both video & sound.

- MBP Audio > Headphones works ok.

- Checked the system preferences > Sound out and it's ok (not much to choose).

Any ideas if this actually SHOULD work? Thank's :-)

iPhone 4S, Mac OS X (10.7.2), iMac 27", iPhone 4w, iOS Developer

Posted on Jan 9, 2012 1:22 AM

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Answer 1

Zyriab

Level 4

3,344 points

Jan 10, 2012 1:47 PM in response to _Mac

Not sure what the problem is here, since you say:

- MBP Audio > Thunderbolt display works ok, both video & sound.

So you're getting video and sound from the MBP to the Thunderbolt display, so where's the problem?

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Answer 2

_Mac Author

Level 1

4 points

Jan 13, 2012 1:56 AM in response to Zyriab

Maybe it was not clear in my post. I simply want to play my MBPs screen content on a TV (hdmi) and that does not work. Connecting and showing ion the Thunderbolt screen is not a problem...

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Answer 3

Shootist007

Level 6

16,703 points

Jan 13, 2012 2:28 AM in response to _Mac

What brand, make, of adapter are you using? Is it an Apple brand or aftermarket (some othr brand of adapter).

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Answer 4

Jan 13, 2012 2:54 AM in response to _Mac

Hi _Mac,

Your problem is probably due to a bad HDMI cable, since this is a common problem with MacBook's.

I recommend you to try with another HDMI cable first.

Good luck!

Michaël Duwyn

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Answer 5

_Mac Author

Level 1

4 points

Jan 13, 2012 5:42 AM in response to _Mac

Thank's guys for all the suggestions, but;

- I can get out the videosignal but not the sound (MBP -> HDMI).

- HDMI cabel is HDMI version 1.4 (support sound, 3D etc).

- MBP -> HDMI adapter is Apple's own, bought i late december 2011 (latest? Should support hdmi 1.4 (sound)).

- The HDMI cabel does work fine for a number of other items in my setup.

Could it maybe get "lost in translation"?

My setup: MBP -> Apple HDMI-adapter -> HDMI cabel v1.4 -> Pioneer VSX 1021 (Rec./Amp.) -> HDMI TV.

I'll try to go directly from the MBP -> Apple HDMI-adapter -> HDMI TV tonight and see if that's maybe the case.

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Answer 6

Jan 14, 2012 3:14 PM in response to _Mac

Have you tried with other HDMI cables or just that one?

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Answer 7

PreDMD

Level 1

0 points

Nov 13, 2012 8:54 PM in response to _Mac

Had the same problems. The System Preferences doesnt do much when I go into sound and select the HDMI cable. But what did work for me was plugging the HDMI with converter into the thunderbolt display, going to Utilities --> Audio MIDI Setup, "right" click HDMI cable and select Use This Device for Sound Output. Worked like a charm for me.

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Answer 8

Aug 29, 2015 2:25 AM in response to PreDMD

Thank you, some of you folks are out of this world when it comes to good information. Thank you all!

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