The following laptops have switchable graphics:
Integrated graphics mode uses the integrated GPU only and turns off the NVIDIA GPU. This mode uses less power, leading to a longer battery life and less fan noise.
NVIDIA graphics mode uses the discrete NVIDIA GPU only. This provides a better graphical experience, but reduces battery life. Most external display ports on System76 laptops are connected to the NVIDIA GPU only. (Some models, such as the Gazelle, may also have external ports connected to the integrated GPU.)
Hybrid graphics mode uses both the integrated GPU and the discrete NVIDIA GPU. Applications will use the integrated GPU unless explicitly requested to use the discrete GPU.
Vulkan applications must be launched with this command to be rendered on the dGPU (NVIDIA):
GLX applications must be launched with this command to be rendered on the dGPU (NVIDIA):
__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia <application>
Hybrid graphics mode is available on 19.10 and later.
Compute graphics mode uses the integrated GPU for all rendering. The NVIDIA GPU is left available, allowing it to be used as a compute node.
Pop!_OS by System76 includes the system76-power package, which includes the ability to switch between integrated, NVIDIA, and hybrid graphics modes.
Click the system menu in the top right corner of your screen to access graphics switching.
Click on NVIDIA, Integrated, Hybrid, or Compute depending on your use case.
Once you select a mode, you will be prompted to reboot.
If you are not using the GNOME Desktop Environment, you can use the system76-power command line tool. You can see the options with this command:
For seeing which graphics mode the system is using:
sudo system76-power graphics
For switching to NVIDIA graphics:
sudo system76-power graphics nvidia
For switching to integrated graphics:
sudo system76-power graphics integrated
For switching to hybrid graphics:
sudo system76-power graphics hybrid
For switching to compute mode:
sudo system76-power graphics compute
The source code for the system76-power utility and the GNOME Shell extension can be found on GitHub: