About bumblebee 12.10

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http://askubuntu.com – Im using ubuntu 12.10 and installed BUMBLEBEE with the way in wiki. When i try to run programs with OPTIRUN i get this error. [ 3143.700713] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) NVIDIA(0): Failed to initialize the NVIDIA GPU at PCI:1:0:0. [ 3143.700755] [ERROR]Aborting because fallback start is disabled. How can i fix it and use my Nvidia GT555M as a main graphic card? Thanks for reading. (HowTos)