From 4f054051e59a6ab119e8b2079f9c595343e58bb2 Mon Sep 17 00:00:00 2001
From: Evan Reichard <evan@reichard.io>
Date: Sat, 25 Oct 2025 13:02:36 -0400
Subject: [PATCH] fix: thinkpad L14 S4 hibernate

---
 systems/x86_64-linux/lin-va-thinkpad/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/systems/x86_64-linux/lin-va-thinkpad/default.nix b/systems/x86_64-linux/lin-va-thinkpad/default.nix
index ddae833..4253682 100755
--- a/systems/x86_64-linux/lin-va-thinkpad/default.nix
+++ b/systems/x86_64-linux/lin-va-thinkpad/default.nix
@@ -9,6 +9,10 @@ in
   hardware.bluetooth.enable = true;
   hardware.amdgpu.initrd.enable = lib.mkDefault true;
   services.xserver.videoDrivers = [ "modesetting" ];
+  boot.kernelParams = [
+    # Mask GPE03 (EC wakeup events) to allow hibernation without spurious CPU wakeups
+    "acpi_mask_gpe=0x03"
+  ];
 
   # System Config
   reichard = {