Valami nem stimmel az Ubuntu 13.10 + Bumblebee társulással, vagy én vagyok nagyon gyökér:
@linux:/$vblank_mode=0 /opt/VirtualGL/bin/./glxspheres64
OpenGL Renderer: Mesa DRI Intel(R) Ivybridge Mobile
170.489513 frames/sec - 177.159063 Mpixels/sec
169.601078 frames/sec - 176.235872 Mpixels/sec
170.203424 frames/sec - 176.861781 Mpixels/sec
170.115625 frames/sec - 176.770548 Mpixels/sec
169.981885 frames/sec - 176.631576 Mpixels/sec
170.898009 frames/sec - 177.583539 Mpixels/sec
@linux:/$ vblank_mode=0 optirun /opt/VirtualGL/bin/glxspheres64
OpenGL Renderer: GeForce GT 630M/PCIe/SSE2
122.478610 frames/sec - 127.269973 Mpixels/sec
123.069976 frames/sec - 127.884473 Mpixels/sec
120.849468 frames/sec - 125.577099 Mpixels/sec
123.918280 frames/sec - 128.765963 Mpixels/sec
121.744961 frames/sec - 126.507624 Mpixels/sec
120.131112 frames/sec - 124.830641 Mpixels/sec
@linux:/$ vblank_mode=0 primusrun /opt/VirtualGL/bin/glxspheres64
OpenGL Renderer: GeForce GT 630M/PCIe/SSE2
114.813585 frames/sec - 119.305093 Mpixels/sec
117.263393 frames/sec - 121.850737 Mpixels/sec
116.949755 frames/sec - 121.524829 Mpixels/sec
116.386425 frames/sec - 120.939462 Mpixels/sec
Magyarul: az integrált videokártya sokkal jobban teljesít az nvidia nélkül, mint vele...