Comment 34 for bug 868889

I think this bug was the same as bug 871600 and bug 871614 (that I filed). Running Unity 2D makes all the screen tearing problems go away for me. Also, most of the time I can run Unity (regular, 3D) with no problems, but every couple logins it doesn't work. The info I just uploaded is for the working state (no screen tearing or problems that I noticed).