I'm struggling with trying to connect my Elitebook 8570W to my Sony TV via my Pioneer VSX-1124-k AV Receiver with HDMI input ports and a proper output (ARC) to the Sony TV set. I have no issues with the video output from the Display Port using a DisplayPort-to-HDMI adapter and an HDM(-to-HDMI cable. I get a good image on the TV screen with the right aspect ratio, but I cannot for the life of me get audio over to the AV Receiver. The video playback from the 8570W is as good as anyone could hope for but there's no audio. The only audio I hear is from the internal speakers on the laptop, and there are no options in the Sound control panel for the DisplayPort output.
It seems to me that this should be a no-brainer. Any idea what might be wrong with my setup?