Hi, Just received my monitor and in setting it up I get not sound from macbook pro 16". I have the mac connected to the DisplayPort and when configure system Preferences>Sound and select C49RG9x no sound. I also tried the Headphone port on the mac and configured Preferences, then connected to mic out and again no sound. The cable connected to my headphone port does give me sound when plugged into a Boses speaker. so I know sound is getting to the monitor.