I just got an HP Envy 23 monitor to use with my Retina Macbook Pro and so far it's been a serious struggle. The problem I'm focusing on today is sound. The monitor has a Beats Audio headphone jack. Headphones are plugged in but my Macbook claims "The selected device has no output controls" and there is no sound at all. The monitor and laptop are connected via an HDMI cable. Is this the problem? I don't want to have to return the monitor, but it seems like I could wind up spending hundreds of dollars on cables and adapters to figure out the right combination to get sound and a clear picture. Ugh.
Thanks for any help or guidance.