My TV/Projector Is Not Displaying Anything Or The Display Is Switched To Another Input Instead. I Had Previously Seen The "Ready To Connect" Screen.

By default, the HDMI port power management is configured to turn off the display after 10 minutes to protect the projector's bulb lifetime. If you do not need this feature, use the local management GUI or CMS to configure the setting to either Always On or Screensaver.