{ config, lib, pkgs, modulesPath, inputs, ... }: { imports = [ (modulesPath + "/installer/scan/not-detected.nix") inputs.nixos-hardware.nixosModules.common-pc-laptop-ssd inputs.nixos-hardware.nixosModules.lenovo-thinkpad-t440p ]; boot.initrd.availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usb_storage" "sd_mod" "sr_mod" "rtsx_pci_sdmmc" ]; boot.initrd.kernelModules = []; boot.kernelModules = ["kvm-intel"]; boot.extraModulePackages = []; fileSystems."/persist" = {neededForBoot = true;}; # Otherwise, CPU doesn't automatically clock down. powerManagement.cpuFreqGovernor = "ondemand"; # Intel drivers with accelerated video playback support. nixpkgs.config.packageOverrides = pkgs: { intel-vaapi-driver = pkgs.intel-vaapi-driver.override {enableHybridCodec = true;}; }; hardware.opengl = { enable = true; extraPackages = with pkgs; [ intel-media-driver # LIBVA_DRIVER_NAME=iHD intel-vaapi-driver # LIBVA_DRIVER_NAME=i965 (older but works better for Firefox/Chromium) libvdpau-va-gl ]; }; environment.sessionVariables = { LIBVA_DRIVER_NAME = "iHD"; }; # Force intel-media-driver networking.useDHCP = lib.mkDefault true; nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux"; hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware; }