This might be connected to Bug 236877. According to your Xorg.0.log "(II) intel(0): direct rendering: Enabled" direct rendering is enabled and if you are running Compiz DRI should definitively work. Maybe it is just a bug of glxinfo (mesa-utils).
** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Incomplete -- glxinfo Segmentation fault on Hardy [i915] https://bugs.launchpad.net/bugs/244734 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs