From 105d9051dd74374b3ded8b22a43713841293f741 Mon Sep 17 00:00:00 2001
From: lassulus <lass@lassul.us>
Date: Mon, 16 Jan 2017 17:26:06 +0100
Subject: l 2 hw tp-x220: disable acpi backlight handling

---
 lass/2configs/hw/tp-x220.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lass/2configs/hw/tp-x220.nix b/lass/2configs/hw/tp-x220.nix
index 4a7d0bbcd..44b2dcac1 100644
--- a/lass/2configs/hw/tp-x220.nix
+++ b/lass/2configs/hw/tp-x220.nix
@@ -36,6 +36,7 @@ with import <stockholm/lib>;
   boot = {
     kernelModules = [ "kvm-intel" "acpi_call" "tpm-rng" ];
     extraModulePackages = [ config.boot.kernelPackages.tp_smapi ];
+    kernelParams = [ "acpi_backlight=none" ];
   };
 
   hardware.opengl.extraPackages = [
-- 
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