hosts/oignon/hardware.nix

   1 { config, lib, pkgs, hostName, ... }:
   2 {
   3 hardware.cpu.intel.updateMicrocode = true;
   4 hardware.opengl.extraPackages = [
   5   pkgs.intel-media-driver # LIBVA_DRIVER_NAME=iHD
   6   pkgs.vaapiIntel         # LIBVA_DRIVER_NAME=i965 (older but works better for Firefox/Chromium)
   7   pkgs.vaapiVdpau
   8   pkgs.libvdpau-va-gl
   9 ];
  10 powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
  11 services.thinkfan = {
  12   enable = true;
  13   smartSupport = true;
  14   levels = [
  15     [0     0      57]
  16     [1     56     60]
  17     [2     59     63]
  18     [3     62     65]
  19     [4     64     67]
  20     [5     66     72]
  21     [6     71     78]
  22     [7     77     82]
  23     [127   81     32767]
  24   ];
  25 };
  26 hardware.acpilight.enable = true;
  27 services.acpid = {
  28   enable = true;
  29   handlers = {
  30     brightnessDown = {
  31       event = "video/brightnessdown.*";
  32       action = "${pkgs.acpilight}/bin/xbacklight -dec 5";
  33     };
  34     brightnessUp = {
  35       event = "video/brightnessup.*";
  36       action = "${pkgs.acpilight}/bin/xbacklight -inc 5";
  37     };
  38   };
  39   acEventCommands = ''
  40     vals=($1)
  41     case ''${vals[3]} in
  42       00000000) # unplugged
  43         ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g powersave;;
  44       00000001) # plugged in
  45         ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g ondemand;;
  46     esac
  47   '';
  48 };
  49
  50 # https://bugzilla.kernel.org/show_bug.cgi?id=110941
  51 boot.kernelParams = [ "intel_pstate=no_hwp" ];
  52 boot.kernelModules = [
  53   "kvm-intel"
  54 ];
  55 boot.cleanTmpDir = true;
  56 boot.tmpOnTmpfs = true;
  57 boot.extraModulePackages = [
  58   #config.boot.kernelPackages.exfat-nofuse
  59 ];
  60 /*
  61 boot.loader.efi = {
  62   canTouchEfiVariables = true;
  63   efiSysMountPoint = "/boot/efi";
  64 };
  65 */
  66 # No pstore backend available on this system.
  67 systemd.services.mount-pstore.enable = false;
  68 boot.loader.grub = {
  69   enable  = true;
  70   version = 2;
  71   device  = "/dev/disk/by-id/ata-Samsung_SSD_850_PRO_128GB_S1SMNSAFC36436X";
  72   configurationLimit = 3;
  73
  74   #zfsSupport = true;
  75   #efiSupport = true;
  76   #enableCryptodisk = true;
  77 };
  78
  79 fileSystems."/boot" =
  80   { device = "/dev/disk/by-partlabel/${hostName}_ssd_boot";
  81     fsType = "ext2";
  82   };
  83 fileSystems."/boot/efi" =
  84   { device = "/dev/disk/by-partlabel/${hostName}_ssd_efi";
  85     fsType = "vfat";
  86   };
  87 swapDevices = [
  88   { device = "/dev/disk/by-partlabel/${hostName}_ssd_swap";
  89     randomEncryption = {
  90       enable = true;
  91       cipher = "aes-xts-plain64";
  92       source = "/dev/urandom";
  93     };
  94   }
  95 ];
  96 zramSwap = {
  97   enable = true;
  98   algorithm = lib.mkDefault "zstd";
  99   # There is little point creating a zram of greater
 100   # than twice the size of memory
 101   # since we expect a 2:1 compression ratio.
 102   # Note that zram uses about 0.1% of the size of the disk
 103   # when not in use so a huge zram is wasteful.
 104   memoryPercent = lib.mkDefault 150;
 105   # Linux supports multithreaded compression for 1 device since 3.15.
 106   # See https://lkml.org/lkml/2014/2/28/404 for details.
 107   swapDevices = lib.mkDefault 1;
 108 };
 109 boot.kernel.sysctl = {
 110   # Increase cache pressure, which increases the tendency of the kernel to
 111   # reclaim memory used for caching of directory and inode objects. You will use
 112   # less memory over a longer period of time. The performance hit is negated by
 113   # the downside of swapping sooner.
 114   "vm.vfs_cache_pressure" = lib.mkDefault 500;
 115
 116   # Increasing how aggressively the kernel will swap memory pages since we are
 117   # using ZRAM first.
 118   "vm.swappiness" = lib.mkDefault 100;
 119
 120   # Background processes will start writing right away when it hits the 1% limit
 121   "vm.dirty_background_ratio" = lib.mkDefault 1;
 122
 123   # The system won’t force synchronous I/O until it gets to 50% dirty_ratio.
 124   "vm.dirty_ratio" = lib.mkDefault 50;
 125 };
 126
 127 # The 32-bit host id of the host, formatted as 8 hexadecimal characters.
 128 # You should try to make this id unique among your hosts.
 129 # Manually generated with : head -c4 /dev/urandom | od -A none -t x4 | cut -d ' ' -f 2
 130 networking.hostId = "ce53d0c3";
 131
 132 # none is the recommended elevator with ZFS (which has its own I/O scheduler)
 133 # and/or for SSD, whereas HDD could use mq-deadline.
 134 services.udev.extraRules = ''
 135   # set none scheduler for non-rotating disks
 136   ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="none"
 137 '';
 138
 139 boot.supportedFilesystems = [ "ntfs" "vfat" "zfs" ];
 140 boot.initrd.supportedFilesystems = [ "zfs" ];
 141 boot.initrd.availableKernelModules = [
 142   "ahci"
 143   "drbg"
 144   "ehci_pci"
 145   "gf128mul"
 146   "hmac"
 147   "sd_mod"
 148 ];
 149
 150 boot.zfs.forceImportAll  = false;
 151 boot.zfs.forceImportRoot = false;
 152 boot.zfs.enableUnstable = false;
 153 boot.zfs.requestEncryptionCredentials = [ hostName ];
 154 services.zfs.autoScrub.enable = true;
 155
 156 fileSystems."/" =
 157   { device = "${hostName}/root";
 158     fsType = "zfs";
 159   };
 160 fileSystems."/nix" =
 161   { device = "${hostName}/nix";
 162     fsType = "zfs";
 163   };
 164 fileSystems."/var" =
 165   { device = "${hostName}/var";
 166     fsType = "zfs";
 167   };
 168
 169 }