Comment 36 for bug 151674

I know this is already an old thread, however could be useful for someone else.

I had same issue with tearing on TV, but it disappeared after launching the Compiz settings manager (ccsm) on the secondary (TV) screen using alt + f2 and ccsm.
Relevant settings are:
-detect refresh rate off
-refresh rate fixed to 60
-vsync enabled

This works for me! No more tearing! The strange thing is that the the compiz settings manager seems to be for both screens no matter from which you launch it as there is a dropdown in the top left where you can select the screen (screen 0 and screen 1).

I would say this is a bug in the Compiz Settings manager.