AV Troubleshooting - HDCP Problems, Laptop displays only a green screen to the projector

How to troubleshoot HDCP problems
  1. This is a problem caused by HDCP (High Definition Content Protection). Some Macs always have content protection turned on. Most systems are HDCP compliant, however rooms with lecture capture are more likely to have problems.
  2. Check if the laptop is currently playing any protected content (Likely iTunes or Netflix in a browser), and quit the program. Restarting the computer may also help.
  3. Try a different laptop cable. HDCP signals are only carried over HDMI, DVI, and DisplayPort cables; however, not all cables are HDCP compliant. Engineering IT loanable cables are compliant.


Keywords:
av troubleshooting help tips laptop display image green hdcp 
Doc ID:
87529
Owned by:
EngrIT AV KB Owners in Engineering IT
Shared Services
Created:
2018-11-05
Updated:
2025-07-03
Sites:
University of Illinois Engineering IT