Thunderbolt to HDMI - Audio problem

[Bandit390]

I have the new 2011 MBP 13. I have a mini display port to hdmi adapter and a hdmi cable from the adapter to my Samsung 40" LCD.

The problem is no sound is passed threw to my tv. I had a 2009 before this which I know didn't support audio pass through, but I thought the 2010 model did and now the 2011 model doesn't? What should I try?

 

[robbieduncan]

How old is the adaptor? Old ones don't support audio…

 

[Bandit390]

Here is the exact one I have http://www.amazon.com/gp/product/B0025V2VO0

Many people in the reviews say how their audio works on their 2010 model with this adapter.

Anyone have a 2011 model they can try?

 

[dagamer34]

You need to go to System Preferences > Sound > Output and select your TV instead of your laptop's built-in speakers. That is assuming the cable is new enough to support audio through DisplayPort (cable needs to support audio transfer as well as the Mac).