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| #! /bin/bash | |
| BAT=$(echo /sys/class/power_supply/BAT*) | |
| BAT_STATUS="$BAT/status" | |
| BAT_CAP="$BAT/capacity" | |
| LOW_BAT_PERCENT=20 | |
| AC_PROFILE="performance" | |
| BAT_PROFILE="balanced" | |
| LOW_BAT_PROFILE="power-saver" | |
| # wait a while if needed | |
| [[ -z $STARTUP_WAIT ]] || sleep "$STARTUP_WAIT" | |
| # start the monitor loop | |
| prev=0 | |
| while true; do | |
| # read the current state | |
| if [[ $(cat "$BAT_STATUS") == "Discharging" ]]; then | |
| if [[ $(cat "$BAT_CAP") -gt $LOW_BAT_PERCENT ]]; then | |
| profile=$BAT_PROFILE | |
| else | |
| profile=$LOW_BAT_PROFILE | |
| fi | |
| else | |
| profile=$AC_PROFILE | |
| fi | |
| # set the new profile | |
| if [[ $prev != "$profile" ]]; then | |
| echo setting power profile to $profile | |
| powerprofilesctl set $profile | |
| fi | |
| prev=$profile | |
| # wait for the next power change event | |
| inotifywait -qq "$BAT_STATUS" "$BAT_CAP" | |
| done |
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Hey, since I can't make a pull request. I modified the script slightly because there was some edge cases when the battery comes from being at 100% full charging to 100% full not charging where some systems will let the battery drain a bit then restart charging, which makes the system switch profiles endlessly. just added a check if there's an AC adapter.