system76-power
A utility for managing graphics modes and power profiles on Linux laptops and all-in-one PCs.
What is system76-power?
system76-power is a Linux utility that provides centralized control over graphics switching and power management settings. It is designed to optimize performance and battery life on systems with switchable graphics, particularly those with NVIDIA GPUs, by simplifying complex hardware interactions.
Linux users, particularly on laptops and all-in-one PCs with switchable graphics (especially NVIDIA GPUs), who need granular control over graphics modes and power profiles to balance performance and battery life.
Developers choose system76-power for its unified, user-friendly interface that consolidates graphics mode switching (Integrated, NVIDIA, Hybrid, Compute) and power profile management (Balanced, Performance, Battery) into a single utility, with features like hotplug detection and runtime power management for modern NVIDIA hardware.
Overview
Power profile management for Linux
Use Cases
Best For
- Optimizing battery life on Linux laptops with NVIDIA switchable graphics by switching to Integrated graphics mode.
- Maximizing graphical performance for gaming or GPU-intensive applications by switching to NVIDIA-only graphics mode.
- Enabling PRIME render offloading to run specific applications on the dGPU while using the iGPU as the primary renderer (Hybrid mode).
- Using external displays connected to dGPU ports on laptops, with automatic hotplug detection prompting mode switches.
- Managing power profiles (Balanced, Performance, Battery) to adjust system behavior like disk sync intervals, laptop mode, and screen brightness.
- Reducing GPU power consumption on idle for compatible NVIDIA hardware (Turing and newer) via runtime power management.
Not Ideal For
- Desktop systems without switchable graphics support
- Users needing instant graphics mode changes without reboots
- Systems with non-NVIDIA GPUs or older NVIDIA cards lacking runtime power management
- Developers using non-GNOME desktop environments where hotplug detection is unavailable
Pros & Cons
Pros
Centralizes multiple graphics modes (Integrated, NVIDIA, Hybrid, Compute) into a single utility, simplifying management for switchable graphics laptops as described in the README.
Offers Balanced, Performance, and Battery profiles to adjust system settings like disk sync intervals and screen brightness, optimizing for different usage scenarios.
Automatically detects displays connected to dGPU ports and prompts mode switches via a GNOME extension, enhancing user experience for external display setups.
Supports GPU power management on compatible NVIDIA hardware (Turing and newer), reducing power consumption when idle, as verified through driver JSON files.
Cons
Switching graphics modes requires a system reboot, which is inconvenient and disrupts workflow compared to more seamless solutions.
Limited to specific NVIDIA GPUs and driver versions (e.g., 435.17+ for PRIME offloading), making it unsuitable for diverse or older hardware setups.
Configuring hotplug detection involves manual steps like using coreboot-collector and understanding GPIO mappings, which can be technical and error-prone for non-experts.
Frequently Asked Questions
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