What is the name of the Nintendo Switch feature that lets a console wake a television when docked?

The Nintendo Switch feature that can wake a television when the console is docked is called Match TV Power State.

This system setting coordinates the Switch with a television through HDMI-CEC, a standard that allows connected devices to exchange control commands. When enabled on compatible equipment, actions such as waking the Switch or removing it from sleep can affect the television’s power or input state.

The feature is not guaranteed to behave identically with every television. HDMI-CEC support and manufacturer settings vary, and some brands use different names for their own implementation. That is why a television may need its HDMI control option enabled separately.

Match TV Power State should not be confused with the Switch’s video output resolution or with the dock’s power adapter. It is a convenience setting for docked play, not a performance mode and not a requirement for displaying the Switch on a television.