I added vblank_mode=3 to my .bashrc, and then removed my xorg.conf (which was configured for fglrx, I assume from when it had the Catalyst drivers). ~/.drirc di

I added vblank_mode=3 to my .bashrc, and then removed my xorg.conf (which was configured for fglrx, I assume from when it had the Catalyst drivers). ~/.drirc didn't exist on my system. No change. :(