From ba0a640afd06deb62f88c93e9b4118036c1090fa Mon Sep 17 00:00:00 2001
From: Elian Doran <contact@eliandoran.me>
Date: Thu, 12 Jan 2023 21:18:37 +0200
Subject: [PATCH] fancontrol: restart service after suspend

---
 nixos/modules/services/hardware/fancontrol.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/nixos/modules/services/hardware/fancontrol.nix b/nixos/modules/services/hardware/fancontrol.nix
index e7eb8ebf92be..993c37b2364f 100644
--- a/nixos/modules/services/hardware/fancontrol.nix
+++ b/nixos/modules/services/hardware/fancontrol.nix
@@ -42,6 +42,13 @@ in
         ExecStart = "${pkgs.lm_sensors}/sbin/fancontrol ${configFile}";
       };
     };
+
+    # On some systems, the fancontrol service does not resume properly after sleep because the pwm status of the fans
+    # is not reset properly. Restarting the service fixes this, in accordance with https://github.com/lm-sensors/lm-sensors/issues/172.
+    powerManagement.resumeCommands = ''
+      systemctl restart fancontrol.service
+    '';
+
   };
 
   meta.maintainers = [ maintainers.evils ];