Check greenified apps. Maybe it's trying greenify any system or normal app and Android it's trying wake it. Same problem here time ago
Maybe BubblePnp. Dont know if it works without router network, maybe you can connect to your smart tv directly by dnla to stream pics and vids.
did anyone her tray the new Ds emulator "Drastic" on Galaxy Ace 2 ?? :)
I tryed it and its works fine with Dragon Quest IX