From 06c4eab6eb2d454aa7d691c0660fe4bb8d994553 Mon Sep 17 00:00:00 2001
From: TheGeneralist <180094941+thegeneralist01@users.noreply.github.com>
Date: Fri, 9 Oct 2026 15:10:45 +0200
Subject: [PATCH] nixos: enable NVIDIA runtime power management

---
 hosts/thegeneralist/hardware-configuration.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/hosts/thegeneralist/hardware-configuration.nix b/hosts/thegeneralist/hardware-configuration.nix
index f03d750..6c68c9f 100644
--- a/hosts/thegeneralist/hardware-configuration.nix
+++ b/hosts/thegeneralist/hardware-configuration.nix
@@ -19,10 +19,17 @@
   boot.extraModprobeConfig = ''
     options rtw88_usb switch_usb_mode=N
     options rtw88_core disable_lps_deep=1
+    options nvidia NVreg_DynamicPowerManagement=0x02
   '';
   boot.kernelParams = [ "usbcore.autosuspend=-1" ];
   networking.networkmanager.wifi.powersave = false;
 
+  # Allow this headless Turing GPU to enter runtime D3 while unused.
+  services.udev.extraRules = ''
+    ACTION=="bind", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x030000", TEST=="power/control", ATTR{power/control}="auto"
+    ACTION=="unbind", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x030000", TEST=="power/control", ATTR{power/control}="on"
+  '';
+
   # Favor efficient idle and light-load operation without suspending this
   # always-on host. The EPP setting retains short performance bursts.
   powerManagement = {