If you do not know how to use that kernel module, I suggest you to stay away from it. In the past it has been used for disabling discrete video cards directly, but that does not make the kernel aware of the state change. The
If you want to disable NVIDIA cads, have a look at Bumblebee which comes with bbswitch, a module for toggling the power of nvidia cards on Optimus laptops. More information about Optimus laptops can be found on How well do laptops with Nvidia Optimus work?
The bumblebee/stable PPA provides the
Load the acpi_call module and define a convenience function for making an ACPI call:
An example: execute the ACPI method
Just use acpi_call_GUI and do it via graphic interface!
here's the website: http://marcodallas.github.io/acpi_call_GUI/
I checked out a new call for
Aspire 5810T V1.35
which is not documented anywhere but works great for me to switch of my ATI card:
@MarcoDallas: thank you for your great work.