When I use DX80 with PC as main monitor, the DX speaker and camera doesn't work. The purpose of that is people still using PC for the tasks can get rid of the existing speaker, webcam and monitor. But it's missing the functions there or I'm missing something.
Speaker now works with new firmware but camera still not. It will be really nice to get that camera works with computer in PC mode. Lots of end users got confused with it. They naturally think they are able to use that camera but the truth is not. I wish Cisco can fix this in the future release soon. Their android OS need to be upgraded to 5 above to share screen through Webex. That's another complaint we have.
Did you ever get the camera to work on your DX80 when used as a monitor for your laptop? I am struggling with that use case and have yet to find a solution.