From 947244095b3efbd282b9dfe9aefcdc9307455459 Mon Sep 17 00:00:00 2001
From: Eli Ribble <eli@theribbles.org>
Date: Wed, 9 Apr 2025 09:13:44 -0700
Subject: [PATCH] Add tools for assessing overheat risk.

I'm thinking that I've been overheating my laptop, and that has lead to
the occasional restarts. These tools are helping me to assess that.
---
 nalai/etc/nixos/configuration.nix | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/nalai/etc/nixos/configuration.nix b/nalai/etc/nixos/configuration.nix
index bb495bf..c910608 100644
--- a/nalai/etc/nixos/configuration.nix
+++ b/nalai/etc/nixos/configuration.nix
@@ -60,6 +60,7 @@
     kdePackages.plasma-browser-integration
     keychain
     libation
+    lm_sensors
     lunar-client
     mosh
     mercurial
@@ -76,6 +77,7 @@
     signal-desktop
     splix
     spotify-player
+    s-tui
     step-ca
     step-cli
     thunderbird
@@ -224,8 +226,31 @@
     # no need to redefine it in your config for now)
     #media-session.enable = true;
   };
+  services.power-profiles-daemon.enable = false;
   services.resolved.enable = true;
   services.tailscale.enable = true;
+  services.tlp = {
+    enable = true;
+    settings = {
+      CPU_SCALING_GOVERNOR_ON_AC = "performance";
+      CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
+
+      CPU_ENERGY_PERF_POLICY_ON_BAT = "power";
+      CPU_ENERGY_PERF_POLICY_ON_AC = "performance";
+
+      CPU_MIN_PERF_ON_AC = 0;
+      CPU_MAX_PERF_ON_AC = 100;
+      CPU_MIN_PERF_ON_BAT = 0;
+      CPU_MAX_PERF_ON_BAT = 20;
+
+      # Optional helps save long term battery health
+      START_CHARGE_THRESH_BAT0 = 40; # 40 and below it starts to charge
+      STOP_CHARGE_THRESH_BAT0 = 80; # 80 and above it stops charging
+    };
+  };
+  services.thinkfan = {
+    enable = true;
+  };
 
   # Enable touchpad support (enabled default in most desktopManager).
   # services.xserver.libinput.enable = true;