Linux & Powerprofile

$ sudo apt install power-profiles-daemon

$ powerprofilesctl set power-saver

$ powerprofilesctl

$ more /proc/cpuinfo | grep "cpu MHz"

Reference

• Enable hibernate, https://ubuntuhandbook.org/index.php/2021/08/enable-hibernate-ubuntu-21-10/
• CPU power mode, https://ubuntuhandbook.org/index.php/2023/10/command-cpu-power-mode-ubuntu-22-04/