LG UltraFine 4K Display doesn't turn back on after sleep or screen saver after upgrading iMac to Ventura

My issue is somewhat different from what I originally thought. I have had my LG UltraFine 4K Display plugged into a "Controlled by Master" outlet in my UPS unit; I did so because that's what I did with our older, conventional monitors, so they would power off when the iMac powered off.

Apparently, with Ventura, the UPS unit is not always detecting that the "master" (the iMac) is on, and so is not turning on the "Controlled by Master" outlets. Perhaps there has been some change in electrical usage on the iMac with the Ventura release.

At any rate, I plugged the LG secondary monitor into a regular backup outlet on the UPS and it now comes on whenever the iMac does, including after sleep and screen saver.

Since the LG UltraFine 4K Display has no power switch and it is turned on and off by the iMac it is connected to, use of the "Controlled by Master" outlet is no longer necessary anyhow.

Sometimes I have to restart the iMac to get the LG UltraFine 4K Display to come back to life.

There is no "active Sync sense" setting (whatever that might be) for displays on an iMac running on Ventura.