I created a bug for a similar problem a few weaks ago : "[Bug 48596] amd64 fglrx No matching visual for __GLcontextMode"
In my case, the problem occurs even with a regular X server not XGL. -- Errors __GLcontextMode in x86_64 version of fglrx drivers https://launchpad.net/bugs/37980 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
