desktop.nix

# Do not modify this file!  It was generated by ‘nixos-generate-config’
# and may be overwritten by future invocations.  Please make changes
# to /etc/nixos/configuration.nix instead.
{ config, lib, pkgs, ... }:

{
  imports =
    [ <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
    ];

  boot = {
    loader = {
      systemd-boot = {
        enable = true;
        configurationLimit = 20; # Only keep the last 20 generations.
        consoleMode = "keep";
        editor = false;
        memtest86.enable = true;
      };
    };

    initrd.availableKernelModules = [ "xhci_pci" "ahci" "usb_storage" "usbhid" "sd_mod" "sr_mod" ];
    initrd.kernelModules = [ ];
    kernelModules = [ "kvm-intel" ];
    extraModulePackages = [ ];
  };

  fileSystems."/" =
    { device = "/dev/disk/by-uuid/e9cfae6e-91e4-47dc-a018-4b111f13d8f3";
      fsType = "ext4";
    };

  fileSystems."/boot" =
    { device = "/dev/disk/by-uuid/B92A-E549";
      fsType = "vfat";
    };

  swapDevices =
    [ { device = "/dev/disk/by-uuid/fae28b9f-66b7-48f3-9217-1b3275894290"; }
    ];

  networking = {
    hostName = "Karl-Desktop";
    networkmanager.enable = true;
    # Interface-wide useDHCP will be deprecated, so per-interface useDHCP is used.
    useDHCP = false;
    interfaces = {
      enp0s31f6.useDHCP = true;
    };
  };

  services.xserver = {
    enable = true;
    videoDrivers = [ "nvidia" ]; # "nouveau" "nvidiaLegacy390" "intel" ];
    # modules = [ pkgs.linuxPackages.nvidia_x11 ];
    config = lib.mkForce ''
      # nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 455.38

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "1"
EndSection

Section "Files"
  FontPath "${pkgs.xorg.fontbhlucidatypewriter100dpi}/lib/X11/fonts/100dpi"
  ModulePath "/nix/store/myw0y3pr2848xkfhpzdz5ck5ahh2d6xc-nvidia-x11-455.38-5.4.85-bin/lib/xorg/modules/drivers/nvidia_drv.so"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "LG Electronics MP59HT"
    HorizSync       30.0 - 85.0
    VertRefresh     40.0 - 75.0
    Option         "DPMS"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "HP x20LED"
    HorizSync       24.0 - 83.0
    VertRefresh     50.0 - 76.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 1080"
    BusID          "PCI:1:0:0"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 980 Ti"
    BusID          "PCI:2:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-1"
    Option         "metamodes" "nvidia-auto-select +0+0"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "metamodes" "nvidia-auto-select +0+0 {AllowGSYNC=Off}"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection
    '';
    exportConfiguration = true; # Show xserver settings in xorg.conf file in /etc/X11/
  };

  hardware = {
    opengl.enable = true; # Enable OpenGL.
    # Update microcode. Address "Firmware Bug" startup messages.
    cpu.intel.updateMicrocode = true;
  };

  nix.maxJobs = lib.mkDefault 8;
  powerManagement.cpuFreqGovernor = lib.mkDefault "performance";
}