MiniDP port doesn't play sound via HDMI

Heya,
Which MBP do you have? My understanding is that the current version will support both sound and video via the miniport. I know that the version before the current does not though as I have tried (without the use of crazy cables that combine the sources found on various websites),

Some HDMI adaptors do not carry audio and some models don't carry audio on the HDMI adaptor so you need to run a separate cable from the computer's audio out port to the external device.

See also, iMac (Late 2009), MacBook Pro (Mid 2010), MacBook (13-inch, Mid 2010)- HDMI audio doesn't work with some adapters.

Hey dude. I got the same problem. So started looking around. First, mid 2010 MBP is supposed to play audio and video out of the miniDP as advertised. Check to se if you have the late model with full HDMI support under: About this mac>More info>audio. scroll down to bottom to see if "HDMI" is listed. You should be good if you just bought your MBP one week ago. Bad news - I read somewhere that OS10.6.4 has a bug that needs to be fixed and for some reason wont actually play audio through miniDP at this time. Apparently this is written somewhere on Moshi website (the makers of apple distributed miniDP to HDMI adapter). Adapter cost $39 which ***** cause it wont play audio just video at this time. I think option are either to wait it out until apple fixes bug, just plug in headphones jack for audio, or apparently go back to earlier version of OS??? Does this all sound like crap? Has someone figured out a solution? Keep us posted on the fix.

also check your cables,
i use the old cables,
which work out better for me,
video through hdmi and audio through the amp...

I have a brand new (late July 2010) MacBook Pro 13' which is supposed to have sound out through MiniDisplayPort (MDP).

I ordered an adapter MDP -> HDMI (Dr Bott) from AppleStore Sweden last week as I was told it was sound compatible (so says the adapter package explicitly) - so the adapter should be OK.

The adapter must have MDP (VESA) 1.1a, which mine has, but I get no sound. No sound pops up in the settings anywhere but the built in speakers.

The Apple Support Sweden told me to try install the combo-update to OSX ver. 10.6.4, but I still got no sound. I have seen several forum posts around where people are suspecting the version 10.6.4 to be the problem - apparently the sound came through with 10.6.3 but some bug in 10.6.4 (which hasn't been fixed in the combo) has messed this up.

Has anyone a better idea or fix for this annoying problem?

Yes, I do have the similar problem when 'cheap' adapter with OSX 10.6.4. The adapter is working fine with GNU/Linux kernel 2.6.34.
I documented it over here,
http://discussions.apple.com/thread.jspa?threadID=2449961&tstart=0


Thank you.

From "aprroved" adapter's page;
http://store.moshimonde.com/hdmi-adapter-1.html

quote;
"Note: Audio output through HDMI may not function properly for iMac 21.5/27" with the Mac OSX 10.6.4 update. Please do not update to 10.6.4 until Apple has resolved this issue."

Apple, make us happy again.
Thank you.

Update: I got a new Dr. Bott Adaptor sent to me by Apple Store and it works now...

Similar problem here..

I bought a cable mini-dp to HDMI that carries both video and audio signals.
I have a late 2008 MacBook Pro (audio not supported through mini-DP port - I really hate Apple).
My TV (Sony Bravia KDL-40W5500) waits the audio signal from HDMI cable and it doesn't allow as input the aux 3,5 jack.

Any suggestion?

same problem here!

my cable MDP -> HDMI tranfert both video and audio, but I've got a late 2008 15" MBP.
I can't believe Apple haven't release a fix to enable audio through Mini Display Port.
That's a shame!

I paid 1800€ for a laptop and now I have to spend more money for adapters praying they would works...anyway I have to use two cable instead one.

Actually I can't even use my cable MDP -> HDMI because my TV (Sony KDL-W5500) support HDMI video + AUX audio only for HDMI video cable (not video + audio, otherwise the TV keep taking audio input from HDMI cable instead AUX port)

I apologize for my poor english,
hoping apple would fix this problem also on my system

Hi, guidino. I have a late-2008 unibody MBP like yours, and I don't expect Apple will ever enable our mini-Displayports to output audio signals. But there are adapters that will combine audio and video signals from our machines into a single HDMI cable and resolve the problem you describe in your post. Here are three:

This one draws 5.1-channel optical digital audio from the headphone port and power from a USB port:

http://kanexlive.com/products/item.aspx?id=3495

This one draws 2-channel stereo audio from a USB port:

http://kanexlive.com/products/item-id-3323.html

This is similar to the first one linked above, but less expensive:

http://www.cablematters.com/pc-56-26-mini-displayport-male-and-toslink-audiousb- male-to-hdmi-female-adapter.aspx

I don't know where you are located, but you should be able to find these adapters or similar ones somewhere near you, or at an online vendor who ships to your country.