https://bugs.freedesktop.org/show_bug.cgi?id=33348
--- Comment #15 from Alex Deucher agd5f@yahoo.com 2011-02-24 08:52:26 PST --- Does using Xv fix the kwin issues? A user reported on IRC that using Xv seems to fix the GL issues he was having which implies we are missing some state in the 3D driver that the 2D driver sets.