From 31a9db9cb4ecf9deecf313a09ffc8ece1299e5d4 Mon Sep 17 00:00:00 2001
From: Quentin Aristote <quentin@aristote.fr>
Date: Wed, 27 Jul 2022 11:21:21 +0200
Subject: os: kernel: disable gpu power management, limit processor sleep
 states

see also https://linuxreviews.org/Intel_graphics#cite_note-baytrailflaw-6
---
 nixos/hardware-configuration.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/nixos/hardware-configuration.nix b/nixos/hardware-configuration.nix
index d77bde9..6166d92 100644
--- a/nixos/hardware-configuration.nix
+++ b/nixos/hardware-configuration.nix
@@ -13,7 +13,8 @@
   boot.initrd.kernelModules = [ "dm-snapshot" ];
   boot.kernelModules = [ "kvm-intel" ];
   boot.extraModulePackages = [ ];
-  # boot.kernelParams = [ "i915.dc_enable=0" ];
+  boot.kernelParams =
+    [ "i915.dc_enable=0" "intel_idle.max_cstate=1" ];
 
   fileSystems."/" = {
     device = "/dev/disk/by-uuid/f5809224-8478-474f-b25d-dde1ada37957";
-- 
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