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nix-configuration/hosts/Khanda/hardware-configuration.nix

120 lines
3 KiB
Nix

# Surface Pro 9
{
config,
lib,
pkgs,
modulesPath,
...
}:
let
bootUUID = "B2D7-96C3"; # The UUID of the boot partition.
luksUUID = "f5ff391a-f2ef-4ac3-9ce8-9f5ed950b212"; # The UUID of the locked LUKS partition.
in
{
imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
boot = {
# NOTE: Uncomment to use a default kernel and skip full kernel rebuilds
#kernelPackages = lib.mkForce pkgs.linuxPackages_latest;
# Enable antenna aggregation
extraModprobeConfig = ''
options iwlwifi 11n_disable=8
'';
initrd = {
availableKernelModules = [
"surface_aggregator"
"surface_aggregator_registry"
"surface_aggregator_hub"
"surface_hid_core"
"hid_multitouch"
"8250_dw"
"intel_lpss"
"intel_lpss_pci"
"xhci_pci"
"thunderbolt"
"nvme"
"usb_storage"
"sd_mod"
"surface_kbd"
"pinctrl_tigerlake"
];
kernelModules = [
"surface_aggregator"
"surface_aggregator_registry"
"surface_aggregator_hub"
"surface_hid_core"
"surface_hid"
"hid_multitouch"
"8250_dw"
"intel_lpss"
"intel_lpss_pci"
"surface_kbd"
"pinctrl_tigerlake"
];
};
kernel.sysctl = {
# Try to reduce swappiness - Khanda hates paging, even to NVMe storage
"vm.swappiness" = 20;
};
kernelModules = [
"kvm-intel"
"surface_aggregator"
"surface_aggregator_registry"
"surface_aggregator_hub"
"surface_hid_core"
"surface_hid"
"hid_multitouch"
"8250_dw"
"intel_lpss"
"intel_lpss_pci"
"surface_kbd"
"pinctrl_tigerlake"
];
kernelParams = [ "pci=hpiosize=0" ]; # Prevent ACPI interrupt storm. See https://github.com/linux-surface/linux-surface/wiki/Surface-Pro-9#acpi-interrupt-storm
};
# Configure the main filesystem.
aux.system.filesystem = {
enable = true;
partitions = {
boot = "/dev/disk/by-uuid/${bootUUID}";
luks = "/dev/disk/by-uuid/${luksUUID}";
};
swapFile = {
enable = true;
size = 16384;
};
};
# Change I/O scheduler to BFQ to try and reduce stuttering under load.
services.udev.extraRules = ''
ACTION=="add|change", KERNEL=="nvme0*", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="bfq"
'';
hardware = {
cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
# Enable camera driver
# NOTE: Results in a kernel panic on 6.10 kernels. See https://github.com/linux-surface/linux-surface/issues/1516
# ALSO: This causes a build failure on NixOS anyway. ee https://github.com/NixOS/nixpkgs/issues/303067
ipu6 = {
enable = false;
platform = "ipu6ep";
};
};
boot.blacklistedKernelModules = [
"intel-ipu6"
"intel-ipu6-isys"
];
# Limit the number of cores Nix can use
nix.settings.cores = 8;
# Install/configure additional drivers, particularly for touch
environment.systemPackages = with pkgs; [ libwacom-surface ];
}