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{ config, pkgs, ... }:
{
# boot settings
boot = {
kernelPackages = pkgs.linuxPackages_latest;
# do not use default kernel module (r8169) for the realtek rtl8125 ethernet
# controller, as it has issues with packet loss and can't keep up with the high
# 2.5g link speed.
# the out-of-tree module r8125 also has issues however, as apparently when sending
# off packets the hardware offloading done on the network chip fails massively,
# corrupting a huge amount of packets, breaking off connections and distorting video.
# the fix to disable the hardware offloading is handled by systemd-networkd below.
blacklistedKernelModules = [ "r8169" ];
extraModulePackages = [ config.boot.kernelPackages.r8125 ];
kernelModules = [ "r8125" ];
loader = {
systemd-boot.enable = true;
efi.canTouchEfiVariables = true;
};
initrd.systemd.enable = true;
};
# hardware settings
hardware = {
enableRedistributableFirmware = true;
enableAllFirmware = true;
graphics = {
enable = true;
enable32Bit = true;
extraPackages = with pkgs; [
vpl-gpu-rt
intel-media-driver
intel-vaapi-driver
intel-compute-runtime
intel-ocl
];
};
};
# swap alternative
zramSwap = {
enable = true;
algorithm = "zstd";
swapDevices = 1;
memoryPercent = 50;
};
networking = {
useDHCP = false;
dhcpcd.enable = false;
wireless.interfaces = [ "wlp6s0" ];
};
systemd.network = {
enable = true;
networks = {
# ethernet through the rtl8125 ethernet controller (supports 2.5g)
"10-ether" = {
name = "enp7s0";
DHCP = "yes";
};
# wifi connection via mediatek mt7921k (supports wifi 6e)
"10-wlan" = {
name = "wlp6s0";
DHCP = "yes";
networkConfig.IgnoreCarrierLoss = "3s";
# authentication handled via wpa_supplicant in modules/wireless.nix
};
};
# the rtl8125 notoriously has extreme issues with offloaded calculations
# sent from linux machines, and corrupts packets badly, crippling connectivity.
# we disable most forms of offloading to the chip here, instead handling them
# in our own kernel. this fixes most of the issues.
links."10-rtl8125-hardware-offloading" = {
matchConfig.Name = "enp7s0";
linkConfig = {
ReceiveChecksumOffload = false; # rx off
TransmitChecksumOffload = false; # tx off
TCPSegmentationOffload = false; # tso off
TCP6SegmentationOffload = false; # tso off (ipv6)
GenericSegmentationOffload = false; # gso off
GenericReceiveOffload = false; # gro off
};
};
};
# storage
fileSystems = {
"/mnt/Kui" = {
device = "/dev/disk/by-label/Kui";
fsType = "ext4";
options = [
"defaults"
"users"
"nofail"
"exec"
"rw"
];
};
};
# sound
security.rtkit.enable = true;
services.pipewire = {
enable = true;
alsa = {
enable = true;
support32Bit = true;
};
pulse.enable = true;
jack.enable = true;
};
}
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