This page will give updated notes on troubleshooting problems with Macs or Windows laptops.
MacBook Green Screens
Some models of MacBooks will occassionally have issues connecting via HDMI to classroom systems. Often, these are systems running OS 11 Big Sur, but are not limited to those Macs. Often, you will see this behavior on MacBooks that have HDMI ports on them and were made prior to 2016. But it has been seen on newer models as well. This is due to a Digital Rights Management (DRM) security feature installed by Apple designed to prevent showing copyrighted material.
Due to Digital Rights Management security features on Apple products, you may experience a green screen when connecting via HDMI or AirPlay to Cynap. You will often see this if you are attempting to record on Cynap using Zoom or Panopto more often. Try connecting a different way. If you are connected via HDMI, try using a VGA adapter or connecting via AirPlay. If you are connecting via AirPlay, try using either HDMI or a VGA connector if you get a green screen.
Watch this 56-second video on how to connect wirelessly to the Cynap with a Windows laptop.
Watch this 48-second video on how to connect wirelessly to the Cynap with a Mac laptop.