From 847adc7d631070f5561e402da604e1d37e5f435e Mon Sep 17 00:00:00 2001
From: Ryan Yin <xiaoyin_c@qq.com>
Date: Sat, 3 Jan 2026 20:09:39 +0800
Subject: [PATCH] feat: add power management service

---
 hosts/12kingdoms-shoukei/default.nix |  1 +
 hosts/idols-ai/default.nix           |  1 +
 modules/nixos/desktop/power.nix      | 17 +++++++++++++++++
 3 files changed, 19 insertions(+)
 create mode 100644 modules/nixos/desktop/power.nix

diff --git a/hosts/12kingdoms-shoukei/default.nix b/hosts/12kingdoms-shoukei/default.nix
index ae1c2146..030e8fd5 100644
--- a/hosts/12kingdoms-shoukei/default.nix
+++ b/hosts/12kingdoms-shoukei/default.nix
@@ -19,6 +19,7 @@ in
 
   # disable sunshine for securrity
   services.sunshine.enable = lib.mkForce false;
+  services.tuned.ppdSettings.main.default = lib.mkForce "power-saver";
 
   networking = {
     inherit hostName;
diff --git a/hosts/idols-ai/default.nix b/hosts/idols-ai/default.nix
index ea731885..1f57bfc9 100644
--- a/hosts/idols-ai/default.nix
+++ b/hosts/idols-ai/default.nix
@@ -25,6 +25,7 @@ in
   ];
 
   services.sunshine.enable = lib.mkForce true;
+  services.tuned.ppdSettings.main.default = lib.mkForce "performance";
 
   networking = {
     inherit hostName;
diff --git a/modules/nixos/desktop/power.nix b/modules/nixos/desktop/power.nix
new file mode 100644
index 00000000..646f3620
--- /dev/null
+++ b/modules/nixos/desktop/power.nix
@@ -0,0 +1,17 @@
+{ ... }:
+{
+  # TuneD - Tuning Profile Delivery Mechanism for Linux
+  # A modern replacement for PPD(power-profiles-daemon)
+  services.tuned = {
+    enable = true;
+    settings.dynamic_tuning = true;
+    ppdSupport = true; # translation of power-profiles-daemon API calls to TuneD
+    ppdSettings.main.default = "balanced"; # balanced / performance / power-saver
+  };
+  # DBus service that provides power management support to applications
+  # Required by `tuned-ppd` for handling power supply changes
+  services.upower.enable = true;
+
+  services.power-profiles-daemon.enable = false; # conflicts with tuned
+  services.tlp.enable = false; # conflicts with tuned
+}