3

I'm trying to optimise the power management on my Dell XPS 15 laptop, whose current consumption is approximately equivalent to the output of a midsized nuclear power plant.

I would therefore like to ensure that the hybrid graphics (Optimus) feature works as intended, and shuts off the dGPU when not in use. Do I still need to use Bumblebee and bbswitch to accomplish this, or has Ubuntu (and the kernel) advanced to the point where it's handled natively? I see that prime-select allows choosing one of the graphics processors or --on-demand.

System details:

Kubuntu 19.10
Dell XPS 15 9530
Intel i7-4702HQ with HD Graphics 4600
Nvidia GT750M (nvidia-driver-418 proprietary driver)
etc
  • 141
  • 3

1 Answers1

1

Ubuntu's Optimus management dropped bbswitch in 18.10, later backported to 18.04. So you don't need it. The acpi calls are I think now supported by the kernel. . If you use NVIDIA drivers, sudo prime-select Intel should turn off NVIDIA. If it's not working, it's a bug which you should report.. The Ubuntu devs take Optimus support seriously.

Tim Richardson
  • 2,414