From 29a269dcfbe3ed3768918d595a59b83d5735be73 Mon Sep 17 00:00:00 2001
From: Jordan Holt <jordan@vimium.com>
Date: Sat, 26 Jul 2025 16:29:26 +0100
Subject: [PATCH] hosts/artemis: add hardware config from Jovian-NixOS

---
 hosts/artemis/default.nix                | 14 ++++-
 hosts/artemis/hardware-configuration.nix | 75 ++++++++++++++++++++----
 2 files changed, 78 insertions(+), 11 deletions(-)

diff --git a/hosts/artemis/default.nix b/hosts/artemis/default.nix
index 08c3e99..d757645 100644
--- a/hosts/artemis/default.nix
+++ b/hosts/artemis/default.nix
@@ -6,7 +6,9 @@
 }:
 
 let
-  inherit (lib) mkForce;
+  inherit (lib)
+    mkForce
+    ;
 in
 {
   imports = [
@@ -45,6 +47,16 @@ in
     };
   };
 
+  services.earlyoom = {
+    enable = true;
+    extraArgs = [
+      "-M"
+      "409600,307200"
+      "-S"
+      "409600,307200"
+    ];
+  };
+
   services.sunshine = {
     enable = false;
     package = pkgs.unstable.sunshine;
diff --git a/hosts/artemis/hardware-configuration.nix b/hosts/artemis/hardware-configuration.nix
index 75e9766..dc73385 100644
--- a/hosts/artemis/hardware-configuration.nix
+++ b/hosts/artemis/hardware-configuration.nix
@@ -6,23 +6,59 @@
   ...
 }:
 
+let
+  inherit (lib)
+    mkDefault
+    mkOverride
+    ;
+in
 {
   imports = [
     (modulesPath + "/installer/scan/not-detected.nix")
   ];
 
+  # Inspired by: https://github.com/Jovian-Experiments/Jovian-NixOS
   boot = {
-    initrd.availableKernelModules = [
-      "xhci_pci"
-      "ehci_pci"
-      "nvme"
-      "usbhid"
-      "usb_storage"
-      "sd_mod"
+    initrd = {
+      availableKernelModules = [
+        "xhci_pci"
+        "ehci_pci"
+        "nvme"
+        "usbhid"
+        "usb_storage"
+        "sd_mod"
+      ];
+      kernelModules = [
+        "amdgpu"
+      ];
+      supportedFilesystems = [ "zfs" ];
+    };
+    kernel.sysctl = {
+      "kernel.sched_cfs_bandwidth_slice_u" = mkDefault 3000;
+      "kernel.sched_latency_ns" = mkDefault 3000000;
+      "kernel.sched_min_granularity_ns" = mkDefault 300000;
+      "kernel.sched_wakeup_granularity_ns" = mkDefault 500000;
+      "kernel.sched_migration_cost_ns" = mkDefault 50000;
+      "kernel.sched_nr_migrate" = mkDefault 128;
+      "kernel.split_lock_mitigate" = mkDefault 0;
+
+      "net.ipv4.tcp_mtu_probing" = true;
+      "net.ipv4.tcp_fin_timeout" = mkDefault 5;
+
+      "vm.max_map_count" = mkOverride 999 2147483642;
+    };
+    kernelModules = [
+      "hid_nintendo"
+      "hid_playstation"
+      "kvm-amd"
+    ];
+    kernelParams = [
+      "log_buf_len=4M"
+      "amdgpu.lockup_timeout=5000,10000,10000,5000"
+      "ttm.pages_min=2097152"
+      "amdgpu.sched_hw_submission=4"
+      "audit=0"
     ];
-    initrd.kernelModules = [ "amdgpu" ];
-    initrd.supportedFilesystems = [ "zfs" ];
-    kernelModules = [ "kvm-amd" ];
     kernelPackages = pkgs.linuxPackages_6_12;
     supportedFilesystems = [ "ntfs" ];
   };
@@ -31,6 +67,23 @@
     bluetooth = {
       enable = true;
       powerOnBoot = true;
+      settings = {
+        General = {
+          MultiProfile = "multiple";
+          FastConnectable = true;
+          # enable experimental LL privacy, experimental offload codecs
+          KernelExperimental = "15c0a148-c273-11ea-b3de-0242ac130004";
+        };
+        LE = {
+          ScanIntervalSuspend = 2240;
+          ScanWindowSuspend = 224;
+        };
+      };
+    };
+    graphics = {
+      enable32Bit = true;
+      extraPackages = [ pkgs.gamescope-wsi ];
+      extraPackages32 = [ pkgs.pkgsi686Linux.gamescope-wsi ];
     };
     cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
     enableRedistributableFirmware = true;
@@ -38,6 +91,8 @@
 
   powerManagement.cpuFreqGovernor = "schedutil";
 
+  services.pulseaudio.enable = false;
+
   services.xserver.videoDrivers = [ "amdgpu" ];
 
   networking.useDHCP = lib.mkDefault true;