From 179bcde845464be4f21e4b170877e3ef61fec2b3 Mon Sep 17 00:00:00 2001
From: Alberto Berti <alberto@metapensiero.it>
Date: Sun, 3 Jun 2018 01:32:16 +0200
Subject: [PATCH] Add stub for the S3 suspend state issue

See https://delta-xi.net/#056
---
 lenovo/thinkpad/x1/6th-gen/default.nix | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lenovo/thinkpad/x1/6th-gen/default.nix b/lenovo/thinkpad/x1/6th-gen/default.nix
index 848cc00cae7..c0b4fbd785e 100644
--- a/lenovo/thinkpad/x1/6th-gen/default.nix
+++ b/lenovo/thinkpad/x1/6th-gen/default.nix
@@ -55,4 +55,14 @@ STOP_CHARGE_THRESH_BAT0=80
     ];
   };
 
+  # Enable S3 suspend state: you have to manually follow the
+  # instructions shown here: https://delta-xi.net/#056 in order to
+  # produce the ACPI patched table. Put the CPIO archive in /boot and
+  # then enable the following lines
+  # boot.kernelParams = [
+  #   "mem_sleep_default=deep"
+  # ];
+  # boot.initrd.prepend = [
+  #   "/boot/acpi_override"
+  # ];
 }