From 9f2a5c1a47674015a5252ee07d09bec2a627045e Mon Sep 17 00:00:00 2001
From: Alan Pearce
Date: Thu, 21 Dec 2017 21:09:52 +0100
Subject: t470s: Use alternative X acceleration method

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

diff --git a/modules/machines/t470s.nix b/modules/machines/t470s.nix
index 16ae3bb8..30d304e5 100644
--- a/modules/machines/t470s.nix
+++ b/modules/machines/t470s.nix
@@ -11,6 +11,11 @@
     load-module module-alsa-sink device=hw:0,7
   '';
 
+  # Try a different acceleration method; maybe it helps with screen corruption
+  services.xserver.deviceSection = ''
+    Option      "AccelMethod"  "uxa"
+  '';
+
   environment.systemPackages = with pkgs; [
     nvme-cli
   ];
-- 
cgit 1.4.1