The problem is that you don't have libglcore.so as part of proprietary drivers (nvidia, for e.g.). At this time libglcore is substituted with mesa-dri/glx (which is abs. soft-ware rasterizer, not using your video card 3D acceleration) and xserver-xorg-video-nouveau (queer soft-ware subst. for native video card drivers).
Try to run glxgears, glxinfo and you'll see error - glxinfo: error while loading shared libraries: libGLcore.so.1: cannot open shared object file: No such file or directory -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/932125 Title: compiz crashed with SIGSEGV in Glib::Source::prepare_vfunc() To manage notifications about this bug go to: https://bugs.launchpad.net/compiz-core/+bug/932125/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
