Ok that's a good suggestion , I'm sure I have it around here someplace. Did you set the shield up to recognize the LG remote?I use my LG remote to control the tv and my nvidia shield, so you can go that way
Hmm except I don't ever want the shield off as it's acting as my NAS with a 20tb HDD attached. Anyhow as expected the wife doesn't want me to mess with it until she goes back to work.If it is only those 2 devices, the HDMI CEC should work as others have mentioned. I have a receiver thrown in the mix as well, and when I power on the Shield (from the Shield remote), it turns on the TV and the receiver. When I turn off the Shield, it turns the other two off. No reason it won't do the same for you, as long as you make sure the Shield is plugged into the correct HDMI on the TV.