I installed Linux on my laptop. With Linux, the laptop has become less energy efficient. Are there ways to increase the working time?
The wiki contains some good background information:
https://wiki.archlinux.org/title/Power_management#Power_saving
http://wiki.archlinux.org/index.php/Pm-utils
http://wiki.archlinux.org/index.php/Cpufrequtils
http://wiki.archlinux.org/index.php/Acpid
You should check with a tool like htop (terminal application) what consumes the CPU power the most.
My HP device runs a lot longer on Linux than on Windows 11