57 lines
1.8 KiB
Nix
57 lines
1.8 KiB
Nix
{ lib, config, pkgs, ... }: {
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config = lib.mkIf (config.syscfg.make.power) {
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services.tlp = {
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enable = true;
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settings = {
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START_CHARGE_THRESH_BAT0 = 75;
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STOP_CHARGE_THRESH_BAT0 = 90;
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CPU_SCALING_GOVERNOR_ON_AC = "performance";
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CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
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MEM_SLEEP_ON_BAT = "deep";
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};
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};
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powerManagement.enable = true;
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# suspend to RAM (deep) rather than `s2idle`
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boot.kernelParams = [ "mem_sleep_default=deep" ];
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# suspend-then-hibernate
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systemd.sleep.extraConfig = ''
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HibernateDelaySec=30m
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SuspendState=mem
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'';
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services.logind.lidSwitch = "suspend-then-hibernate";
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# Hibernate on power button pressed
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services.logind.powerKey = "hibernate";
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services.logind.powerKeyLongPress = "poweroff";
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systemd.user.services.battery_monitor = {
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wants = [ "display-manager.service" ];
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wantedBy = [ "graphical-session.target" ];
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script = ''
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prev_val=100
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check () { [[ $1 -ge $val ]] && [[ $1 -lt $prev_val ]]; }
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notify () {
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${pkgs.libnotify}/bin/notify-send -a Battery "$@" \
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-h "int:value:$val" "Discharging" "$val%, $remaining"
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}
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while true; do
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IFS=: read _ bat0 < <(${pkgs.acpi}/bin/acpi -b)
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IFS=\ , read status val remaining <<<"$bat0"
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val=''${val%\%}
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if [[ $status = Discharging ]]; then
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echo "$val%, $remaining"
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if check 30 || check 25 || check 20; then notify
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elif check 15 || [[ $val -le 10 ]]; then notify -u critical
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fi
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fi
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prev_val=$val
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# Sleep longer when battery is high to save CPU
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if [[ $val -gt 30 ]]; then sleep 10m; elif [[ $val -ge 20 ]]; then sleep 5m; else sleep 1m; fi
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done
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'';
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};
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};
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}
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