system76-power is a utility for managing power behaviour and switchable graphics on Linux systems. It provides a background service together with command-line controls for querying and selecting power and graphics modes.
Power profiles can adjust processor, platform and device settings to favour performance, balanced operation or reduced energy consumption. On systems with switchable graphics, system76-power can also choose how integrated and discrete GPUs are used.
Its graphics controls are particularly useful on laptops where power consumption and GPU selection are closely connected.
This is free and open source software.
Key Features
- Provide Balanced, Performance and Battery power profiles.
- Adjust processor and platform power settings according to the selected profile.
- Use ACPI Platform Profiles on hardware where the kernel exposes them.
- Reduce display brightness and disable keyboard backlighting as part of battery-saving policy.
- Control SCSI and SATA link power-management settings.
- Manage Intel P-State settings where available.
- Detect whether a laptop supports switchable graphics.
- Select integrated graphics for lower graphical power consumption.
- Select NVIDIA graphics when full discrete-GPU rendering is required.
- Provide Hybrid mode using PRIME render offloading so applications can selectively use the discrete GPU.
- Provide Compute mode where integrated graphics handles display rendering while the discrete GPU remains available for computation.
- Query the active graphics mode from the command line.
- Query and control the discrete GPU power state.
- Detect external displays connected to discrete-GPU outputs on supported machines.
- Emit D-Bus notifications that desktop integration can use when a graphics-mode change is appropriate.
Website: github.com/pop-os/system76-power
Support:
Developer: System76
License: GNU General Public License v3.0
system76-power is written in Rust. Learn Rust with our recommended free books and free tutorials.
Related Software
| Power Consumption Tools | |
|---|---|
| TLP | Power management package; features in Essential System Tools |
| auto-cpufreq | Automatic CPU speed and power optimizer |
| RyzenAdj | Adjusts AMD Ryzen APU thermal, current and wattage limits |
| PowerTOP | Enable various powersaving modes |
| TLP UI | GTK interface to review and modify TLP configuration |
| cpupower | Linux kernel tool |
| power-profiles-daemon | Makes power profiles handling available over D-Bus |
| cpupower-gui | Tool to set CPU frequency limits |
| batctl | Battery charge threshold manager for Linux laptops |
| TuneD | Daemon for monitoring and adaptive tuning of system devices |
| asusctl | Control aspects of ASUS laptops |
| system76-power | Utility for managing graphics and power profiles |
| jolt | Terminal-based battery and energy monitor |
| thermald | Thermal daemon for Intel Architecture |
| powerstat | Measures the power consumption of a laptop |
| LACT | Linux GPU Control Application |
| pstate-frequency | Controls CPU frequencies, governors and turbo boost modes |
| Wattage | Monitor the health and status of power devices |
| Power Options | Graphical profiles for tuning CPU, GPU and device energy use |
| PowerDevil | Controls brightness, battery behaviour and sleep in KDE Plasma |
Read our verdict in the software roundup.
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