1 { config, lib, pkgs, ... }:
3 cfg = config.hardware.fancontrol;
4 configFile = pkgs.writeText "fancontrol.conf" cfg.config;
8 options.hardware.fancontrol = {
9 enable = lib.mkEnableOption "software fan control (requires fancontrol.config)";
11 config = lib.mkOption {
12 type = lib.types.lines;
13 description = "Required fancontrol configuration file content. See {manpage}`pwmconfig(8)` from the lm_sensors package.";
15 # Configuration file generated by pwmconfig
17 DEVPATH=hwmon3=devices/virtual/thermal/thermal_zone2 hwmon4=devices/platform/f71882fg.656
18 DEVNAME=hwmon3=soc_dts1 hwmon4=f71869a
19 FCTEMPS=hwmon4/device/pwm1=hwmon3/temp1_input
20 FCFANS=hwmon4/device/pwm1=hwmon4/device/fan1_input
21 MINTEMP=hwmon4/device/pwm1=35
22 MAXTEMP=hwmon4/device/pwm1=65
23 MINSTART=hwmon4/device/pwm1=150
24 MINSTOP=hwmon4/device/pwm1=0
29 config = lib.mkIf cfg.enable {
31 systemd.services.fancontrol = {
32 documentation = [ "man:fancontrol(8)" ];
33 description = "software fan control";
34 wantedBy = [ "multi-user.target" ];
35 after = [ "lm_sensors.service" ];
38 Restart = "on-failure";
39 ExecStart = "${pkgs.lm_sensors}/sbin/fancontrol ${configFile}";
43 # On some systems, the fancontrol service does not resume properly after sleep because the pwm status of the fans
44 # is not reset properly. Restarting the service fixes this, in accordance with https://github.com/lm-sensors/lm-sensors/issues/172.
45 powerManagement.resumeCommands = ''
46 systemctl restart fancontrol.service
51 meta.maintainers = [ lib.maintainers.evils ];