http://www.blackops2forum.com/archive/index.php/t-9713.html seems to note different 3D options to try.
I just rented Call of Duty Black Ops 2 for the Xbox 360 and hooked it up to my 60PM6700 LG tv via HDMI and wanted to experience my first 3d game. I have the settings on the xbox for 1080P and enabled 3d tv settings. When I get into the game, it doesn't recognize the tv as 3d and doesn't give any active 3d options. I do have 3d turned on via the remote on the tv.
Light bulbs you shouldn't buy
There are plenty of dimmable LED light bulbs, but make sure you don't buy the ones that flicker when you dial them down.