It depends on your dock, your TV and whatever you connect your SteamDeck to. I tried connecting my SteamDeck to my Yamaha Receiver/AMP and it got confused by the HDMI CEC, and so I had to buy an HDMI CEC filter adapter so that it doesn’t have blank video every time I connect it. But YMMV.
It depends on your dock, your TV and whatever you connect your SteamDeck to. I tried connecting my SteamDeck to my Yamaha Receiver/AMP and it got confused by the HDMI CEC, and so I had to buy an HDMI CEC filter adapter so that it doesn’t have blank video every time I connect it. But YMMV.