optirun -vv glxspheres

$ optirun -vv glxspheres
[DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[DEBUG]Process /sbin/modinfo started, PID 2732.
[DEBUG]Hiding stderr for execution of /sbin/modinfo
[DEBUG]SIGCHILD received, but wait failed with No child processes
[DEBUG]Detected nvidia driver (module nvidia-current)
[DEBUG]Active configuration:
[DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[DEBUG] X display: :8
[DEBUG] LD_LIBRARY_PATH: /usr/lib/nvidia-current:/usr/lib32/nvidia-current
[DEBUG] Socket path: /var/run/bumblebee.socket
[DEBUG] VGL Compression: proxy
[DEBUG]optirun version 3.0 starting...
[INFO]Response: No - error: [XORG] (EE) NVIDIA(0): Failed to initialize the NVIDIA GPU at PCI:1:0:0.  Please

[ERROR]Cannot access secondary GPU - error: [XORG] (EE) NVIDIA(0): Failed to initialize the NVIDIA GPU at PCI:1:0:0.  Please

[DEBUG]Socket closed.
[ERROR]Aborting because fallback start is disabled.
[DEBUG]Killing all remaining processes.
limator@limas:~$ sudo bumblebee-bugreport

Bug report is being generated

Bug report generated

The bug report has been saved as:
/home/limator/bumblebee-bugreport-20120704_165535.tar.gz

Please continue following the instructions on
https://github.com/Bumblebee-Project/Bumblebee/wiki/Reporting-Issues

Thanks for your help!
The Bumblebee Project Team