Originally Posted by avilella
This Dell laptop has a _DSM ACPI call that will switch on/off the card. There is already example code in Sony Vaio laptops to do that in Linux, so it should be fairly trivial to add support for these Dell models.
See Matthew's email below:
So you're saying that some developers might be able to get the Hybrid SLI working for the Dell Studio XPS 1340 in the near future? I hope so, I know Dell sells a version of the Studio XPS 1340 with Ubuntu pre-installed, and it's sold with the 9500M G using Hybrid SLI, so hopefully this will get more people working on a proper fix (that will also work on my G 210M).