[iMore Question]

Trying to switch to hdmi4

[Just_Me_D]

Do that via your TV and not the TV.

[Dave Marsh]

If your TV supports CEC standard for remote controls, turn it on in TV settings. Then, go to settings on your Apple TV and try adjusting these settings:

“Control your home entertainment system with the Siri Remote
You can configure the Siri Remote to turn your TV on or off, change the input to your Apple TV, and even control the volume.

Use the Siri Remote to turn your TV on or off. In Settings , go to “Remotes and Devices” > “Turn On Your TV with Your Remote.”

Use the Siri Remote to control the volume of your TV or receiver. In Settings , go to “Remotes and Devices” > Volume Control.”

Excerpt From: Apple Inc. “Apple TV User Guide.” Apple Inc., 2015. iBooks.
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