From 05011c3fe1b68c3414fc8a34307c2a07f9427a34 Mon Sep 17 00:00:00 2001
From: Alan Pearce
Date: Fri, 7 Sep 2018 17:08:54 +0200
Subject: T470s: Improve GPU usage/acceleration

---
 modules/machines/t470s.nix | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/modules/machines/t470s.nix b/modules/machines/t470s.nix
index e6fb8cb..304bfd5 100644
--- a/modules/machines/t470s.nix
+++ b/modules/machines/t470s.nix
@@ -5,6 +5,8 @@
     firmwareLinuxNonfree
   ];
 
+  boot.kernelPackages = pkgs.linuxPackages_4_17;
+
   systemd.services.ModemManager.enable = true;
 
   hardware.pulseaudio.extraConfig = ''
@@ -12,11 +14,11 @@
   '';
 
   # Try a different acceleration method; maybe it helps with screen corruption
-  services.xserver.deviceSection = ''
-    Option      "AccelMethod"  "sna"
-    Option      "TearFree"     "true"
-    Option      "TripleBuffer" "false"
-  '';
+  # services.xserver.deviceSection = ''
+  #   Option      "AccelMethod"  "sna"
+  #   Option      "TearFree"     "true"
+  #   Option      "TripleBuffer" "false"
+  # '';
 
   services.xserver.monitorSection = ''
     DisplaySize 310 176
-- 
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