Avoid using multi-sampled visuals, like the cogl patch: http://people.freedesktop.org/~glisse/0001-glx-do-not-use-multisample-visual-config-for-front-o.patch
Avoid using multi-sampled visuals, like the cogl patch: http://people.freedesktop.org/~glisse/0001-glx-do-not-use-multisample-visual-config-for-front-o.patch