We have two Macbooks, one 2011 gray Macbook Pro and one white Macbook purchased feb 2010. We recently bought a Samsung UE32C6000 TV set and connected the MBP with a Mini Display adapter to an HDMI cable to the TV. The TV worked as a second display of the MBP and the sound played on the TV after I set the audio output to Samsung. So far so good. Then I did the same with the white Macbook and the TV w orked as a second 1920x1080 display as well, but I could not set the sound output to the TV, the only option was 'internal speakers'. Both PCs are updated to OSX 10.6.8 so what is the prblem here ? Hardware failure with sound output to HDMI on the white one ? The white one does output normally to headphones but not to HDMI. Any ideas here ?