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====== Laptop Power Management ======

===== Testing =====

  * The following commands can be ran to see if they work on specific hardware

  watch -n 0.5 grep \'cpu MHz\' '/proc/cpuinfo'

  sudo x86_energy_perf_policy --all 'performance' --turbo-enable '1' --force

  sudo x86_energy_perf_policy --all 'power' --turbo-enable '0' --force

====== Dependencies ======

****

  sudo dnf install 'kernel-tools'

====== Scripts ======

===== AC =====

  * Change the ''backlight'' sysfs as-needed (see [[#backlight1|backlight notes]]) or remove altogether

  sudo mkdir -p '/etc/udev/scripts.d' && sudo -e '/etc/udev/scripts.d/ac-power.sh' && sudo chmod +x '/etc/udev/scripts.d/ac-power.sh'

<code>
#!/bin/bash
# AC
echo "$(cat '/sys/class/backlight/'*'/max_brightness')" | tee '/sys/class/backlight/'*'/brightness' > '/dev/null'
x86_energy_perf_policy --all 'balance-performance' --turbo-enable '1' --force
# End</code>

===== Battery =====

  * Change the ''backlight'' sysfs as-needed (see [[distros:fedora_workstation_gnome#backlight|Backlight notes]]) or remove altogether

  sudo mkdir -p '/etc/udev/scripts.d' && sudo -e '/etc/udev/scripts.d/battery-power.sh' && sudo chmod +x '/etc/udev/scripts.d/battery-power.sh'

<code>
#!/bin/bash
# Battery
echo '60600' | tee '/sys/class/backlight/'*'/brightness' > '/dev/null'
x86_energy_perf_policy --all 'balance-power' --turbo-enable '0' --force
# End</code>

===== udev Rule =====

  * Requires the above AC and Battery scripts

  sudo -e '/etc/udev/rules.d/99-power.rules' && sudo udevadm control --reload

<code>
SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="/etc/udev/scripts.d/ac-power.sh"
SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="/etc/udev/scripts.d/battery-power.sh"</code>