Comment 15 for bug 600178

I did find one way to get vsync to work in Natty, but it involves editing xorg.conf. I followed these instructions to disable composite extension: https://wiki.archlinux.org/index.php/Composite

Of course if you do that then all desktop effects and Unity stop working.

What is strange to me that disabling composite makes a difference when using Metacity. I mean, in gconf I have the key "/apps/metacity/general/compositing_manager" set to False, so it shouldn't be using compositing in the first place.