From 01781658b87f573f05e1fa3f48be810656b93d84 Mon Sep 17 00:00:00 2001
From: Akshay <nerdy@peppe.rs>
Date: Thu, 9 Feb 2023 10:44:49 +0530
Subject: working config

---
 home.nix                       |  2 ++
 hosts/myrtle/configuration.nix | 47 +++++++++++++++++++++++++-----------------
 scripts/default.nix            |  3 +++
 scripts/nvidia-offload.nix     | 12 +++++++++++
 4 files changed, 45 insertions(+), 19 deletions(-)
 create mode 100644 scripts/nvidia-offload.nix

diff --git a/home.nix b/home.nix
index 8f89697..b801b7f 100644
--- a/home.nix
+++ b/home.nix
@@ -115,6 +115,8 @@
     initExtra = ''
       ${pkgs.hsetroot}/bin/hsetroot -solid "${theme.base00}"
       xrdb -load $HOME/.Xresources
+      xrandr --setprovideroutputsource modesetting NVIDIA-0
+      xrandr --auto
     '';
   };
 
diff --git a/hosts/myrtle/configuration.nix b/hosts/myrtle/configuration.nix
index 74f4861..f0bcb81 100644
--- a/hosts/myrtle/configuration.nix
+++ b/hosts/myrtle/configuration.nix
@@ -12,8 +12,8 @@
   boot.kernelPackages = pkgs.linuxPackages_latest;
   boot.blacklistedKernelModules = [ "nouveau" ];
   boot.kernelParams = [
-    "i915.modeset=0"
-    #    "intel_pstate=disable"
+    # "i915.modeset=0"
+    # "intel_pstate=disable"
   ];
 
   networking = {
@@ -106,14 +106,14 @@
     nvidia = {
       prime = {
         offload.enable = true;
-        intelBusId = "PCI:00:02:0";
-        nvidiaBusId = "PCI:01:00:0";
+        intelBusId = "PCI:0:2:0";
+        nvidiaBusId = "PCI:1:0:0";
       };
       package = config.boot.kernelPackages.nvidiaPackages.latest;
-      powerManagement = {
-        enable = true;
-        finegrained = true;
-      };
+      # powerManagement = {
+      #   enable = true;
+      #   finegrained = true;
+      # };
     };
   };
 
@@ -126,22 +126,31 @@
     xserver = {
       enable = true;
       layout = "us";
-      videoDrivers = [ "nvidia" "intel" ];
+      videoDrivers = [ "nvidia" ];
       displayManager.startx.enable = true;
-      dpi = 192;
       libinput.enable = true;
-      serverLayoutSection = ''
-        Screen "Screen-nvidia[0]"
-      '';
-      config = lib.mkAfter ''
-        Section "Screen"
-          Identifier "Screen-nvidia[0]"
-          Device "Device-nvidia[0]"
-        EndSection
+      dpi = 192;
+      screenSection = ''
+        Option         "metamodes" "nvidia-auto-select +0+0 {ForceFullCompositionPipeline=On}"
+        Option         "AllowIndirectGLXProtocol" "off"
+        Option         "TripleBuffer" "on"
       '';
+      # serverLayoutSection = lib.mkAfter ''
+      #   Screen 0 "Screen-nvidia[0]"
+      # '';
+      # config = lib.mkAfter ''
+      #   Section "Screen"
+      #     Identifier "Screen-nvidia[0]"
+      #     Device "Device-nvidia[0]"
+      #   EndSection
+      # '';
     };
 
-    openssh.enable = true;
+    openssh = {
+      enable = true;
+      forwardX11 = true;
+      allowSFTP = true;
+    };
 
     asusd = {
       enable = true;
diff --git a/scripts/default.nix b/scripts/default.nix
index 220d76d..f134556 100644
--- a/scripts/default.nix
+++ b/scripts/default.nix
@@ -36,6 +36,9 @@ let
   # battery script
   battery = import ./battery.nix pkgs;
 
+  # run-on-gpu script
+  battery = import ./nvidia-offload.nix pkgs;
+
   # fzf script to switch between tmux sessions
   tmux-fzf = pkgs.writeScriptBin "tmux-fzf" ''
     LIST_DATA="#{session_name}/#{window_name}/#{pane_current_command} @ #{pane_current_path}"
diff --git a/scripts/nvidia-offload.nix b/scripts/nvidia-offload.nix
new file mode 100644
index 0000000..de55fa2
--- /dev/null
+++ b/scripts/nvidia-offload.nix
@@ -0,0 +1,12 @@
+{ pkgs, ... }:
+
+let
+  name = "nvidia-offload";
+in
+pkgs.writeShellScriptBin name ''
+  export __NV_PRIME_RENDER_OFFLOAD=1
+  export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
+  export __GLX_VENDOR_LIBRARY_NAME=nvidia
+  export __VK_LAYER_NV_optimus=NVIDIA_only
+  exec "$@"
+''
-- 
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