One of the team members reported the L702X acpi_call script also works for the Samsung
RF511 and possibly for the RF711 model:
https://lists.launchpad.net/hybrid-graphics-linux/msg00677.html
Find the step-by-step instructions here:
http://linux-hybrid-graphics.blogspot.com/2011/06/dell-l702x-linux-hybrid-graphics-step.html