Install latest/stable of powertop-robertliu
Ubuntu 16.04 or later?
Make sure snap support is enabled in your Desktop store.
Install using the command line
sudo snap install powertop-robertliu
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PowerTOP is a Linux tool to diagnose issues with power consumption and power management. In addition to being a diagnostic tool, PowerTOP also has an interactive mode you can use to experiment with various power management settings, for cases where the Linux distribution has not enabled those settings.
PowerTOP reports which components in the system are most likely to blame for higher-than-needed power consumption, ranging from software applications to active components in the system. Detailed screens are available for CPU C and P states, device activity, and software activity.
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Choose your Linux distribution to get detailed installation instructions. If yours is not shown, get more details on the installing snapd documentation.