I have a similar problem. Quadrapassel doesn't starts normally cause it shows the screen late and works too slow (playing is imposible).
The errors that Terminal provides are: (quadrapassel:5349): ClutterGLX-CRITICAL **: Unable to make the stage window 0x4a0002b the current GLX drawable (quadrapassel:5349): ClutterGLX-CRITICAL **: Unable to make the stage window 0x4a00046 the current GLX drawable Mi video card is: VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c) In some other bug (572465) someone refers to this problem too, and post a temporaly solution: to run the game by command: CLUTTER_VBLANK=none quadrapassel This works, at least, on Intel graphic cards, although Terminal shows this message: (quadrapassel:5385): ClutterGLX-CRITICAL **: Unable to make the stage window 0x4a0002b the current GLX drawable (quadrapassel:5385): ClutterGLX-CRITICAL **: Unable to make the stage window 0x4a00046 the current GLX drawable Aparently, the problems seems to be solved by downgrading to clutter 1.0 -- Quadrapassel - ClutterGLX-CRITICAL error https://bugs.launchpad.net/bugs/529479 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