I have laptop with Nvidia GT 555M video card. System Ubuntu 12.10, kernel Linux 3.5.0-17-generic

1. step what i do:

   sudo add-apt-repository ppa:bumblebee/stable 
   sudo add-apt-repository ppa:ubuntu-x-swat/x-updates 
   sudo apt-get update 
   sudo apt-get install bumblebee bumblebee-nvidia 
   

   restart system

   optirun glxgears
   

   This message give me: Cannot access secondary GPU - error: Could not load GPU driver Aborting because fallback start is disabled.

2. Open sudo gedit /etc/bumblebee/bumblebee.conf and change Driver= to Driver=nvidia and KernelDriver=nvidia-current to KernelDriver=nvidia. Restart the system and run optirun glxgears.

   This message gives me:

    The Bumblebee daemon has not been started yet or the socket path /var/run/bumblebee.socket was incorrect.
    Could not connect to bumblebee daemon - is it running?
   

Anybody have idea?!