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--- notes:laptop_power_management [2019/04/05 23:46] – created Sean Rhone
+++ notes:laptop_power_management [2023/07/13 15:26] (current) – Sean Rhone
@@ Line 1: / Line 1: @@
+====== 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>