modules/thinkpad: load the acpi_call kernel module for TLP

This kernel module is required for some operations supported by
TLP (e.g. tlp recalibrate), so we should enable it and be it to prevent
confusing error messages (as I encountered).

1 files changed, 10 insertions, 0 deletions

diff --git a/modules/hardware/thinkpad.nix b/modules/hardware/thinkpad.nix
index f94b5934..e4c1cd70 100644
--- a/modules/hardware/thinkpad.nix
+++ b/modules/hardware/thinkpad.nix
@@ -27,5 +27,15 @@ in
 
     # TLP Linux Advanced Power Management
     services.tlp.enable = mkDefault true;
+    boot = {
+      # acpi_call is required for some tlp features, e.g. discharge/recalibrate
+      kernelModules = [
+        "acpi_call"
+      ];
+
+      extraModulePackages = [
+        config.boot.kernelPackages.acpi_call
+      ];
+    };
   };
 }