{ modulesPath, nixos-hardware, ... }: { imports = [ (modulesPath + "/installer/scan/not-detected.nix") nixos-hardware.nixosModules.lenovo-thinkpad-t470s nixos-hardware.nixosModules.common-cpu-intel nixos-hardware.nixosModules.common-gpu-intel nixos-hardware.nixosModules.common-pc-laptop-ssd ]; hardware.cpu.intel.updateMicrocode = true; boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "usb_storage" "sd_mod" ]; isIntelGPU = true; boot.initrd.kernelModules = [ ]; boot.kernelModules = [ "kvm-intel" ]; boot.extraModulePackages = [ ]; nix.settings.cores = 4; # use the lowest frequency possible, to save power powerManagement.cpuFreqGovernor = "powersave"; # lm_sensors who cares environment.etc."sysconfig/lm_sensors".text = '' # Generated by sensors-detect on Tue Aug 7 10:54:09 2018 # This file is sourced by /etc/init.d/lm_sensors and defines the modules to # be loaded/unloaded. # # The format of this file is a shell script that simply defines variables: # HWMON_MODULES for hardware monitoring driver modules, and optionally # BUS_MODULES for any required bus driver module (for example for I2C or SPI). HWMON_MODULES="coretemp" ''; services.thermald.enable = true; boot.extraModprobeConfig = '' # enable power savings mode of snd_hda_intel options snd-hda-intel power_save=1 power_save_controller=y # enable power savings mode of igpu, enable framebuffer compression, downclock the LVDS connection options i915 i915_enable_rc6=7 i915_enable_fbc=1 lvds_downclock=1 # automatically suspend USB devices options usbcore autosuspend=2 # Fan control for thinkpads options thinkpad_acpi fan_control=1 ''; boot.kernel.sysctl = { # Probably unnecessary "kernel.nmi_watchdog" = "0"; "vm.laptop_mode" = "5"; # The kernel flusher threads will periodically wake up and write `old' data out to disk. This # tunable expresses the interval between those wakeups, in 100'ths of a second (Default is 500). "vm.dirty_writeback_centisecs" = "1500"; }; }