System76 Power Management
system76-power is a utility for managing graphics and power profiles.
The integrated graphics controller on the Intel or AMD CPU is used exclusively.
Lower graphical performance with a longer battery life.
External displays connected to the dGPU ports cannot be used.
The dGPU (NVIDIA) is used exclusively.
Higher graphical performance at the expense of a shorter battery life.
Allows using external displays.
Enables PRIME render offloading. The iGPU is used as the primary renderer, with the ability to have specific applications render using the dGPU.
PRIME render offloading requires the 435.17 NVIDIA drivers or later.
Applications must use GLVND to take advantage of this feature, so may not render on the dGPU even when requested. Vulkan applications must be launched with
__NV_PRIME_RENDER_OFFLOAD=1 to render on the dGPU. GLX applications must be launched with
__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia to render on the dGPU.
External displays connected to the dGPU ports cannot be used. The NVIDIA drivers currently do not support display offload sink ("reverse PRIME") when configured for render offloading.
NVIDIA driver power management is only fully implemented for Turing cards. This allows them to enter a low power state when not used. Pascal cards are not supported and will remain on, even when not in use.