From ade1f149b7eef87ff92d30f9ee5041dd5fcf40a3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cyryl=20P=C5=82otnicki?= <cyplo@cyplo.net>
Date: Sat, 6 Jul 2019 12:03:30 +0100
Subject: [PATCH] Add thinkpad-specific throttling

---
 nixos/boxes/foureighty.nix | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/nixos/boxes/foureighty.nix b/nixos/boxes/foureighty.nix
index b0b2f948..d2175f6e 100644
--- a/nixos/boxes/foureighty.nix
+++ b/nixos/boxes/foureighty.nix
@@ -29,6 +29,42 @@
   hardware.bumblebee.enable = true;
   hardware.bumblebee.connectDisplay = true;
 
+  hardware.trackpoint.enable = true;
+
+  services.fprintd.enable = true;
+
+  systemd.services.cpu-throttling = {
+    enable = true;
+    description = "CPU Throttling Fix";
+    documentation = [
+      "https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_X1_Carbon_(Gen_6)#Power_management.2FThrottling_issues"
+    ];
+    path = [ pkgs.msr-tools ];
+    script = "wrmsr -a 0x1a2 0x3000000";
+    serviceConfig = {
+      Type = "oneshot";
+    };
+    wantedBy = [
+      "timers.target"
+    ];
+  };
+
+  systemd.timers.cpu-throttling = {
+    enable = true;
+    description = "CPU Throttling Fix";
+    documentation = [
+      "https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_X1_Carbon_(Gen_6)#Power_management.2FThrottling_issues"
+    ];
+    timerConfig = {
+      OnActiveSec = 60;
+      OnUnitActiveSec = 60;
+      Unit = "cpu-throttling.service";
+    };
+    wantedBy = [
+      "timers.target"
+    ];
+  };
+
   imports = [
     /etc/nixos/hardware-configuration.nix
     ../boot.nix