How did you install the nvidia drivers? Your symptoms indicate that you've got the nvidia libglx.so (which won't work with Intel) on your system, which is why 3D isn't working.
The nvidia drivers don't work on optimus hardware; the “Additional Drivers” capplet shouldn't offer to install them anymore. ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/874341 Title: glx doesn't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/874341/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs