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#!/bin/bash | |
dbus-monitor --system "type='signal',path='/org/freedesktop/UPower/devices/battery_BAT0',member='PropertiesChanged'" | while read LINE; do | |
echo ${LINE} | grep battery_BAT0 | grep -q PropertiesChanged | |
if [ $? -eq 0 ]; then | |
BATT_STAT=$(dbus-send --print-reply=literal --system --dest=org.freedesktop.UPower /org/freedesktop/UPower/devices/battery_BAT0 org.freedesktop.DBus.Properties.Get string:org.freedesktop.UPower.Device string:State | awk '{ print $3; }') | |
if [ $BATT_STAT -eq 1 ] || [ $BATT_STAT -eq 4 ]; then | |
LEVEL=$(powerprofilesctl list | grep -q performance && echo "performance" || echo "balanced") | |
elif [ $BATT_STAT -eq 5 ]; then | |
LEVEL="balanced" | |
else | |
LEVEL="power-saver" | |
fi | |
echo "Changing power level to ${LEVEL}" | |
gdbus call --system --dest net.hadess.PowerProfiles --object-path /net/hadess/PowerProfiles --method org.freedesktop.DBus.Properties.Set 'net.hadess.PowerProfiles' 'ActiveProfile' "<'${LEVEL}'>" > /dev/null | |
[[ $? -ne 0 ]] && echo "Could not change power level to ${LEVEL}!" | |
fi | |
done |
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Assuming the script is executable in /usr/local/bin, here's a working systemd service file for it:
Put that in /etc/systemd/system/auto-power-profile.service then
sudo systemctl daemon-reload && sudo systemctl enable --now auto-power-profile
From there, logs for it should show up in journald whenever you have a power status change and it should persist automatically on reboots.