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{ config, pkgs, unstablePkgs, ... }:
{
# boot settings
boot = {
kernelPackages = pkgs.linuxPackages_latest;
kernelParams = [
# checking for cache splitting destroys performance on some
# windows games running via wine/proton, disable it and
# tank their performance impact, which is lower than checking
# and handling the splits.
"split_lock_detect=off"
];
# 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;
# use the most up-to-date mesa we can get from nixos,
# as the intel arc b570 drivers are still in rapid development,
# and any changes could improve stability and performance drastically.
package = unstablePkgs.mesa;
package32 = unstablePkgs.pkgsi686Linux.mesa;
extraPackages = with unstablePkgs; [
vpl-gpu-rt
intel-media-driver
intel-compute-runtime
intel-ocl
];
};
bluetooth = {
enable = true;
powerOnBoot = true;
};
};
# swap alternative
zramSwap = {
enable = true;
algorithm = "zstd";
swapDevices = 1;
memoryPercent = 50;
};
networking = {
useDHCP = false;
dhcpcd.enable = false;
};
systemd.network = {
enable = true;
networks = {
# ethernet through the rtl8125 ethernet controller (supports 2.5g)
"10-ether" = {
name = "enp7s0";
DHCP = "yes";
# higher priority if available
dhcpV4Config.RouteMetric = 10;
dhcpV6Config.RouteMetric = 10;
};
};
# 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.Driver = "r8125"; # match by driver to prevent udev renaming issues
linkConfig = {
# keep naming behavior consistent with defaults
NamePolicy = "keep kernel database onboard slot path";
MACAddressPolicy = "persistent";
# kill hardware offloading for this chipset
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
};
};
};
# sound
security.rtkit.enable = true;
services.pipewire = {
enable = true;
alsa = {
enable = true;
support32Bit = true;
};
pulse.enable = true;
jack.enable = true;
};
# other tweaks
environment.variables = {
# wine+proton reads this variable to decide which cpus to run a given
# application on.
# we choose our p-cores (and the hyperthreads) of the intel i5-14400f
# and let the e-cores handle all the other system tasks.
WINE_CPU_TOPOLOGY = "12:0,1,2,3,4,5,6,7,8,9,10,11";
};
}
|
