I recently bought an hdmi adapter for my macbook pro. Since I bought the macbook(feb 2010) before the mini display port supported audio , I bought a cable that connected to the display port for video and usb for audio. When I plugged it into my westinghouse tv though it said "mode not supported". I tried rebooting on both ends to see if it would work. I also tried all three hdmi ports and it still would not work. Then I tried it on an insignia tv and both audio and video worked fine. Is the westinghouse tv just not compatible or do i need to play with the resolution? what other 'modes' could i change to make this work?