Keep in mind these are generic in nature and may or not apply.
1. Look for any HDMI CEC or "control over HDMI" setting and turn it off.
2. Be sure the TV firmware is up to date.
3. On item 1, see if those HDMI devices have any CEC and turn it off at the other end.
Hello. I recently bought an LG television in October (65UH6030), and about a week ago a message started popping up in the top right corner. It says "unknown device is disconnected". Sometimes it will pop up once every 10 or so minutes, sometimes it will pop up 3 times within a minute. It's constant. I have no idea what it's from, and it's getting quite annoying. I tried messing with the HDMI cables in case one was loose, and I turned off the WiFi in case it was a wireless device that was trying to connect. No luck on either. Any advice would be extremely helpful.