Binary package “bbswitch-dkms” in ubuntu precise

Interface for toggling the power on nVidia Optimus video cards

 bbswitch is a kernel module which automatically detects the required ACPI
 calls for two kinds of Optimus laptops. It has been verified to work with
 "real" Optimus and "legacy" Optimus laptops (at least, that is what the
 author Lekensteyn calls those).
 .
 This package uses DKMS to automatically build the bbswitch kernel module.