mirror of
https://github.com/ryan4yin/nix-config.git
synced 2026-11-13 12:13:46 +01:00
Ryan Yin
f7a92ac704
drivers/nvme/host/core.c defaults default_ps_max_latency_us to 100000, so the "relaxed" APST cap on ai and its copy on aquamarine set the value the kernel already uses. Keep ai's history and rollback recipe as a comment, and stop the aquamarine pcie_aspm=off comment from citing WA-008, which never covered it. Removes WA-008. Assisted-by: Claude Code (claude-opus-5-5)
89 lines
3.3 KiB
Nix
89 lines
3.3 KiB
Nix
# Do not modify this file! It was generated by ‘nixos-generate-config’
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# and may be overwritten by future invocations. Please make changes
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# to /etc/nixos/configuration.nix instead.
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{
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config,
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lib,
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pkgs,
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modulesPath,
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...
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}:
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{
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imports = [
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(modulesPath + "/installer/scan/not-detected.nix")
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];
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# === NVMe power management (relaxed 2026-10) ===
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#
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# The KINGBANK KP260 (a DRAM-less QLC drive, prone to slow APST wakeups) once
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# froze, so APST was fully disabled, the command timeout pushed to the maximum,
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# and PCIe ASPM turned off. Kernel logs from 2026-09-19..10-03 (8 boots) show
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# no NVMe timeout/reset/AER, so all three are back at the kernel defaults:
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# APST capped at 100 ms latency (nvme_core.default_ps_max_latency_us), a 30 s
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# io_timeout that resets a stuck controller, and ASPM, which is unrelated to
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# the drive's own APST.
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#
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# If freezes return under heavy read/write, restore the old workaround:
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# boot.kernelParams = [
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# "nvme_core.default_ps_max_latency_us=0"
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# "nvme_core.io_timeout=4294967295"
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# "pcie_aspm=off"
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# ];
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# See https://community.frame.work/t/nvme-timeout-woes/54999
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# Use the EFI boot loader.
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boot.loader.efi.canTouchEfiVariables = true;
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# depending on how you configured your disk mounts, change this to /boot or /boot/efi.
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boot.loader.efi.efiSysMountPoint = "/boot";
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boot.loader.systemd-boot.enable = true;
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# https://github.com/NixOS/nixpkgs/blob/nixos-unstable/pkgs/top-level/linux-kernels.nix
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boot.kernelPackages = pkgs.linuxPackages_latest;
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boot.initrd.availableKernelModules = [
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"xhci_pci"
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"ahci"
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"nvme"
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"usbhid"
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"usb_storage"
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"sd_mod"
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];
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# clear /tmp on boot to get a stateless /tmp directory.
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boot.tmp.cleanOnBoot = true;
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# Enable binfmt emulation of aarch64-linux, this is required for cross compilation.
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boot.binfmt.emulatedSystems = [
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"aarch64-linux"
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"riscv64-linux"
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];
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# This enables the kernel to preload the emulator binaries when the binfmt registrations are added,
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# obviating the need to make the emulator binaries available inside chroots and chroot-like sandboxes.
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boot.binfmt.preferStaticEmulators = true; # required to work with podman
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# supported file systems, so we can mount any removable disks with these filesystems
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boot.supportedFilesystems = [
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"ext4"
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"btrfs"
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"xfs"
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"ntfs"
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"fat"
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"vfat"
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"exfat"
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];
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# LUKS initrd, all fileSystems (/, /boot, /btr_pool, /nix, /persistent, /snapshots, /tmp, /swap)
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# and swap (including /swap/swapfile bind and swapDevices) are managed by disko (disko-fs.nix).
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# Enables DHCP on each ethernet and wireless interface. In case of scripted networking
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# (the default) this is the recommended approach. When using systemd-networkd it's
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# still possible to use this option, but it's recommended to use it in conjunction
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# with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
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networking.useDHCP = lib.mkDefault true;
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# networking.interfaces.enp5s0.useDHCP = lib.mkDefault true;
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# networking.interfaces.wlo1.useDHCP = lib.mkDefault true;
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nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
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powerManagement.cpuFreqGovernor = lib.mkDefault "performance"; # ondemand / powersave / performance
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hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
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}
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