From 70a8ff0a2511c300a7ab4dc8a9ab03328d52da5a Mon Sep 17 00:00:00 2001
From: Steffen Weitz <weitz.steffen@gmail.com>
Date: Sun, 26 Mar 2023 23:53:18 +0200
Subject: [PATCH] Add settings for AMD Raphael iGPU

---
 common/cpu/amd/raphael/igpu.nix | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 common/cpu/amd/raphael/igpu.nix

diff --git a/common/cpu/amd/raphael/igpu.nix b/common/cpu/amd/raphael/igpu.nix
new file mode 100644
index 0000000..1192d41
--- /dev/null
+++ b/common/cpu/amd/raphael/igpu.nix
@@ -0,0 +1,15 @@
+{ lib, pkgs, ... }: 
+
+{
+  # Disables scatter/gather which was introduced with kernel version 6.2
+  # It produces completely white or flashing screens when enabled while using the iGPU of Ryzen 7000-series CPUs (Raphael)
+
+  imports = [ ../. ];
+
+  boot = lib.mkMerge [
+    (lib.mkIf (lib.versionOlder pkgs.linux.version "6.1") {
+      kernelPackages = pkgs.linuxPackages_latest;
+      kernelParams = lib.mkMerge [["amdgpu.sg_display=0"]];  
+    })
+  ];
+}