Mac mini macOS Sequoia keeps switching TV input when waking from screen saver

Hello den.thed,

Thank you so much for your response. I should clarify. When I say screen saver, I really mean Lock Screen settings. The Lock Screen settings can be seen below. "Auto search for input" is a setting I've seen on a multi-input monitor I have, but not on the Sony TV. I have found out what is going on though in my case. I view the TV as a special case secondary monitor that I use in conjunction with the Mac mini. I literally use it as a TV - I play videos on it from the Mac. The Mac apparently has no built-in function to treat it any differently than just a secondary monitor with no easy ability to have it disabled until I want it enabled (not that I can see anyway). Now as for the TV I have found out what is behind all this behavior. It is the Bravia Sync feature. This allows the TV to send commands to supported HDMI attached devices and receive commands from supported HDMI devices. If I turn that feature off the behavior stops entirely. Unfortunately for all attached devices, and certain behaviors that I want to keep. My particular TV does not have the ability to turn off Bravia Sync by device - it is all or nothing. So if I turn off Bravia Sync I don't get the unwanted behavior caused by the Mac mini, but I lose the wanted behavior from the Blu-ray player (powering that on causes the TV to power on, turning on the player turns on the TV and switches it to the Blu-ray input, and powering off the TV powers off the Blu-ray player ).

Thank you for your efforts.