From a87750cd30a1385986b58df59d3c0cf5090d5293 Mon Sep 17 00:00:00 2001
From: Oliver Davies <oliver@oliverdavies.dev>
Date: Sun, 9 Jun 2024 20:51:23 +0100
Subject: [PATCH] Tweak performance and battery optimisation settings
Based on https://github.com/MatthewCroughan/nixcfg and other sources.
---
lib/nixos/configuration.nix | 17 +++++++++++++++++
lib/nixos/hardware-configuration.nix | 11 +++++++++--
2 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/lib/nixos/configuration.nix b/lib/nixos/configuration.nix
index 3d0bf11d..e012ac5c 100644
--- a/lib/nixos/configuration.nix
+++ b/lib/nixos/configuration.nix
@@ -26,6 +26,23 @@ in {
boot.loader.efi.canTouchEfiVariables = true;
boot.loader.efi.efiSysMountPoint = "/boot/efi";
+ services.thermald.enable = true;
+ services.power-profiles-daemon.enable = false;
+
+ services.tlp = {
+ enable = true;
+
+ settings = {
+ PCIE_ASPM_ON_BAT = "powersupersave";
+ CPU_SCALING_GOVERNOR_ON_AC = "performance";
+ CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
+ CPU_MAX_PERF_ON_AC = "100";
+ CPU_MAX_PERF_ON_BAT = "30";
+ STOP_CHARGE_THRESH_BAT1 = "95";
+ STOP_CHARGE_THRESH_BAT0 = "95";
+ };
+ };
+
systemd.extraConfig = ''
DefaultTimeoutStopSec=10s
'';
diff --git a/lib/nixos/hardware-configuration.nix b/lib/nixos/hardware-configuration.nix
index 69d1e452..e9fe2e54 100644
--- a/lib/nixos/hardware-configuration.nix
+++ b/lib/nixos/hardware-configuration.nix
@@ -5,10 +5,17 @@
[ "xhci_pci" "thunderbolt" "nvme" "usb_storage" "sd_mod" ];
boot.initrd.kernelModules = [ ];
boot.kernelModules = [ "kvm-intel" ];
- boot.kernelParams = [ "i8042.reset" ];
+ boot.kernelParams = [
+ "i915.modeset=1"
+ "i915.fastboot=1"
+ "i915.enable_guc=2"
+ "i915.enable_psr=1"
+ "i915.enable_fbc=1"
+ "i915.enable_dc=2"
+ ];
boot.extraModulePackages = [ ];
- boot.kernelPackages = pkgs.linuxPackages_latest;
+ boot.kernelPackages = pkgs.linuxPackages_zen;
hardware.enableAllFirmware = true;
fileSystems."/" = {