Dual VGA Cards Intel/ Nvidia
If you have Nvidia Optimus technology in your laptop, you have, according to the Project Bumblebee FAQ, two options:
1) Check your system bios for an option to permanently switch to your nvidia graphics card (make sure you uninstall bumblebee before doing that!)
2) If your bios does not provide this feature you can't just run your nvidia card. What can do is starting single applications directly with your nvidia graphics card from a terminal console with
optirun [yourappofchoice]
Does this help?