bought a long HDMI cable for my dad's laptop so he can put things up in the TV. does pictures up on the big screen just fine, but won't do sound (which is still coming out of the laptop). so I swap it out for a spare short cable and all works as it should. back to the long cable and no sound at the tv. ok, so the cable is bad. but just to double check I grab my laptop and plug in the long cable and the sound comes from the TV like it should. switch back to dad's laptop and still no sound at the TV. what the heck.
those dang 1s and 0s are going to be the death of me yet...