- Jul 15, 2019
- Gigabyte Z390 Designare
- UHD 630
- Mobile Phone
A lot of times when I see this it's due to the DRM mechanism (HDCP) that is part of HDMI not renegotiating correctly. Try unplugging at the card, wait 10 or 15 seconds and then plug the cable back in to the card. This will force a new handshake.
Thanks for the response. I'm using DisplayPort over Thunderbolt 3