This issue is usually caused by a conflict between your device’s HDMI-CEC feature and our Activity control. HDMI-CEC is a function that controls device power via the HDMI connection. It interferes with our Activity function. To use the Activity function, please make sure HDMI-CEC has been turned off on all of your devices.
HDMI-CEC has different terms on different devices. Please refer to the table below to find the alternative name for HDMI-CEC on your device.
Samsung Anynet+
LG SimpLink
Sony BRAVIA Sync/BRAVIA Link
Panasonic VIERA Link/EZ-Sync
Philips EasyLink
Toshiba Regza Link/CE-Link
Sharp Aquos Link
Hisense HDMI Control/CEC
Vizio CEC
TCL T-Link/HDMI Control
Roku 1-Touch Play