notes:laptop_power_management
Table of Contents
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 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'
#!/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
Battery
- Change the
backlight
sysfs as-needed (see 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'
#!/bin/bash # Battery echo '60600' | tee '/sys/class/backlight/'*'/brightness' > '/dev/null' x86_energy_perf_policy --all 'balance-power' --turbo-enable '0' --force # End
udev Rule
- Requires the above AC and Battery scripts
sudo -e '/etc/udev/rules.d/99-power.rules' && sudo udevadm control --reload
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"
/var/www/wiki/data/pages/notes/laptop_power_management.txt · Last modified: 2023/07/13 15:26 by Sean Rhone