Comment 19 for bug 1049214

It does not make the problem go away for me: it does improve it though: instead of no screen redraws at all, the screen redraws about once every 3 seconds instead. As with vsync enabled, glxgears constantly claims that is it doing 4000 FPS. So I don't think this really fixes the problem at all, it just removes some, but not all, of the xsync calls causing the problem.