I just bought an XPS L702X with an i7-2630QM and a 3GB Geforce 555m (non 3D screen option). Does it have Optimus enabled? How can I tell? I can't see it mentioned anywhere and I assumed it did not. I will be using Linux as my main OS. Can Optimus be disabled in the BIOS?
Yes, the system will support Optimus under Windows - but there are no drivers for it under Linux. Unless something was added very recently, there is no BIOS enable/disable.
Thanks ejn63. I've read up on Optimus. NVidia have stated they no plans to support Optimus under Linux making the dedicated graphics card useless.
I didn't factor in Optimus when selecting a laptop. I'm really disappointed as there are now no real choices left in the range of laptops that I want that don't have Optimus.
There's some work being done to be able to switch off the discrete graphics card from inside linux, but no dell's officially tested as working from what I've read so far.
I have a blog post about this issue, how I almost bought a Dell XPS 15 before I found out it wouldn't work with linux:
Most people I ask about alternative laptops with similar specs and no optimus config have suggested getting a mac, because the linux drivers and hardware are well supported. And macs use ATI chipsets.