Merge NixOS#598

598: Add settings for AMD Raphael iGPU r=Mic92 a=stffffn



Co-authored-by: Steffen Weitz <[email protected]>

common/cpu/amd/raphael/igpu.nix

@@ -0,0 +1,20 @@
+{ lib, pkgs, ... }: 
+
+{
+  # Sets the kernel version to the latest kernel to make the usage of the iGPU possible if your kernel version is too old
+  # 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 = ["amdgpu.sg_display=0"];  
+    })
+
+    (lib.mkIf (lib.versionAtLeast pkgs.linux.version "6.2") {
+      kernelParams = ["amdgpu.sg_display=0"];
+    })
+  ];
+}

flake.nix

@@ -168,6 +168,7 @@
 
       common-cpu-amd = import ./common/cpu/amd;
       common-cpu-amd-pstate = import ./common/cpu/amd/pstate.nix;
+      common-cpu-amd-raphael-igpu = import ./common/cpu/amd/raphael/igpu.nix;
       common-cpu-intel = import ./common/cpu/intel;
       common-cpu-intel-cpu-only = import ./common/cpu/intel/cpu-only.nix;
       common-cpu-intel-kaby-lake = import ./common/cpu/intel/kaby-lake;