headless home, and fixed legoals sleep

This commit is contained in:
2026-07-13 15:01:01 +02:00
parent 57fc209f38
commit 30d677d172
9 changed files with 149 additions and 12 deletions
+31 -1
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@@ -15,4 +15,34 @@ Changes (`hosts/legolas/hardware-configuration.nix`):
- Removed the no-op `d3cold_allowed` rule and the broken rescan service.
- Added a correct runtime-PM-off udev rule on both the NVMe endpoint (`0000:6e:00.0`) and its parent root port (`0000:00:1d.0`), keeping the PCIe wakeup disable.
Note: runtime PM was already off on the endpoint (`power/control=on`); that alone never fixed the crash because system suspend uses a separate code path. Verify after rebuild that the cmdline has `mem_sleep_default=s2idle` (the old running generation showed a stale duplicate `deep`).
Note: runtime PM was already off on the endpoint (`power/control=on`); that alone never fixed the crash because system suspend uses a separate code path. Verify after rebuild that the cmdline has `mem_sleep_default=s2idle` (the running generation showed a stale duplicate `deep`).
## Headless home-manager configs (galadriel, elros, elrond)
Added minimal home-manager configs for `gunalx` and `root` on headless hosts. These skip all GUI/desktop modules (niri, stylix, foot, noctalia, etc.) and keep only CLI tools: bash (with sops AI keys), git, nixvim (full config reused), opencode, atuin, sshconfig, sops.
Files:
- `home/gunalx-headless.nix` — gunalx's minimal config, same module set as `gunalx.nix` minus all GUI imports.
- `home/root.nix` — identical CLI stack, explicitly sets `home.username`/`home.homeDirectory` to root.
- `home/sops.nix` — parameterized age key paths to use `config.home.homeDirectory` so both users work without duplication.
- `home/sshconfig.nix` — removed `ssh-askpass-fullscreen` (unwired GUI dependency, was dead weight).
- `flake.nix` — added `headlessHmModules` let binding (shared by all three hosts) wiring `home-manager.users.gunalx` + `home-manager.users.root`.
Manual step: root needs the sops age key at `/root/.config/sops/age/key.txt` (or SSH key at `/root/.ssh/nixos`) to decrypt AI API secrets. `age.generateKey = true` will create a new key, but it won't match the encrypted secrets — copy gunalx's age key to root's path, or re-encrypt the secrets with root's age public key.
## galadriel: kernel 7.0 EOL
Linux 7.0 was removed from nixpkgs (EOL). `pkgs.zfs` (stable) is now 2.4.2, same version previously pulled from unstable. Switched `boot.kernelPackages` to the default (6.18) and `boot.zfs.package` to `pkgs.zfs`. No pool compatibility concern since ZFS version is unchanged.
## legolas: lid-close still killing the NVMe — stale `deep` + logind suspend
Root cause of the recurring "SSD dies when lid closed": the *booted* generation carried a duplicate `mem_sleep_default=deep` after `mem_sleep_default=s2idle` (last wins), so `/sys/power/mem_sleep` was `s2idle [deep]` — every suspend went to S3. The source config only had `s2idle`; the stale param lived in the old generation. ACPI advertises S3 (`supports S0 S3 S4 S5`) but S3 is broken for the Phison E21 on this Skylake-era Intel platform, so only s0/s2idle is reliable. Separately, `HandleLidSwitch` was unset → defaulted to `suspend`, which was the actual lid-close trigger.
Changes (`hosts/legolas/hardware-configuration.nix`):
- `services.logind.lidSwitch`/`lidSwitchExternalPower`/`lidSwitchDocked` = `ignore`. Lid close no longer suspends; niri's `switch-events` still locks via noctalia, so the laptop stays on (RAM powered) but can't enter the S3 path.
- `systemd.services.force-s2idle` writes `s2idle` to `/sys/power/mem_sleep` at boot — guarantees the active mode is s2idle even if a future cmdline carries a stray `deep`.
- Suspend (s2idle) remains available via `systemctl suspend`; hibernation stays disabled.
Also fixed `home/niri.nix` lid-close command from the undocumented `lockScreen lock` to the v5-canonical `session lock` (matching the `Mod+M` binding).
Verify after rebuild+reboot: `/proc/cmdline` has no `deep`, and `/sys/power/mem_sleep` shows `[s2idle] deep`.
+33 -3
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@@ -63,6 +63,36 @@
}@inputs:
let
system = "x86_64-linux";
headlessHmModules = [
home-manager.nixosModules.home-manager
{
home-manager.backupFileExtension = "bac";
home-manager.extraSpecialArgs = { inherit inputs; };
home-manager.sharedModules = [
inputs.sops-nix.homeManagerModules.sops
inputs.nixvim.homeModules.nixvim
];
home-manager.users.gunalx = import ./home/gunalx-headless.nix;
home-manager.users.root = import ./home/root.nix;
}
{
home-manager.users.gunalx = {
nixpkgs.config.allowUnfree = true;
nixpkgs.overlays = [
self.overlays.custom
self.overlays.unstable
];
};
home-manager.users.root = {
nixpkgs.config.allowUnfree = true;
nixpkgs.overlays = [
self.overlays.custom
self.overlays.unstable
];
};
}
];
in
{
packages.${system} =
@@ -245,7 +275,7 @@
lanzaboote.nixosModules.lanzaboote
];
] ++ headlessHmModules;
};
# elros
@@ -263,7 +293,7 @@
./hosts/elros/configuration.nix
sops-nix.nixosModules.sops
lanzaboote.nixosModules.lanzaboote
];
] ++ headlessHmModules;
};
# elrond
@@ -281,7 +311,7 @@
./hosts/elrond/configuration.nix
sops-nix.nixosModules.sops
lanzaboote.nixosModules.lanzaboote
];
] ++ headlessHmModules;
};
};
+31
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@@ -0,0 +1,31 @@
{
pkgs,
lib,
inputs,
...
}:
{
imports = [
./sshconfig.nix
./atuin.nix
./git.nix
./bash.nix
./opencode.nix
./nixvim.nix
inputs.sops-nix.homeManagerModules.sops
./sops.nix
];
programs.nix-index = {
enableBashIntegration = true;
enable = true;
};
home.packages = with pkgs; [
comma
];
home.stateVersion = "25.05";
}
+1 -1
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@@ -162,7 +162,7 @@ in
# Switch events for lid open/close
switch-events = {
lid-close.action.spawn = noctalia "lockScreen lock";
lid-close.action.spawn = noctalia "session lock";
tablet-mode-on.action.spawn = [
"bash"
"-c"
+33
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@@ -0,0 +1,33 @@
{
pkgs,
lib,
inputs,
...
}:
{
imports = [
./sshconfig.nix
./atuin.nix
./git.nix
./bash.nix
./opencode.nix
./nixvim.nix
inputs.sops-nix.homeManagerModules.sops
./sops.nix
];
programs.nix-index = {
enableBashIntegration = true;
enable = true;
};
home.packages = with pkgs; [
comma
];
home.username = "root";
home.homeDirectory = "/root";
home.stateVersion = "25.05";
}
+2 -2
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@@ -3,8 +3,8 @@
sops = {
defaultSopsFile = ../secrets/secrets.yaml;
validateSopsFiles = false;
age.sshKeyPaths = [ "/home/gunalx/.ssh/nixos" ];
age.keyFile = "/home/gunalx/.config/sops/age/key.txt";
age.sshKeyPaths = [ "${config.home.homeDirectory}/.ssh/nixos" ];
age.keyFile = "${config.home.homeDirectory}/.config/sops/age/key.txt";
age.generateKey = true;
# This is the actual specification of the secrets.
#secrets."myservice/my_subdir/my_secret" = {};
-1
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@@ -9,7 +9,6 @@
home.packages = with pkgs; [
openssh
ssh-askpass-fullscreen
sshfs
];
+1 -3
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@@ -23,9 +23,7 @@
"sd_mod"
];
# unstable zfs and linux because we needed zfs 2.4.2 for linux 7.0
boot.kernelPackages = pkgs.unstable.linuxPackages_7_0; # migth need to bump down if zfs compat breaks.
boot.zfs.package = pkgs.unstable.zfs; # think this was the correct way
boot.zfs.package = pkgs.zfs;
boot.initrd.kernelModules = [ ];
boot.kernelModules = [ "kvm-amd" ];
boot.extraModulePackages = [ ];
+17 -1
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@@ -12,13 +12,18 @@
#boot.kernelPackages = pkgs.linuxPackages_zen;
boot.kernelPackages = pkgs.linuxPackages_latest;
boot.kernelParams = [
boot.kernelParams = lib.mkForce [
# s2idle (modern standby) instead of deep (S3): the Phison E21 NVMe
# controller (Corsair MP600 ELITE) hangs on resume from the D3 transition
# that S3 forces. s2idle avoids that path.
"mem_sleep_default=s2idle"
"nvme_core.default_ps_max_latency_us=0"
"pcie_aspm=off"
# from hardware config we are overriding away the deep sleep of.
"i915.enable_guc=2"
"i915.enable_fbc=1"
"i915.enable_psr=2"
];
boot.initrd.availableKernelModules = [
@@ -70,6 +75,17 @@
};
};
# Lid close must NOT suspend. The Phison E21 NVMe hangs on resume from any
# system suspend, and logind defaults to HandleLidSwitch=suspend (the trigger
# that kills the drive). Ignore the lid at the logind level; niri's
# switch-events handler still locks the session via noctalia, so the laptop
# stays on (RAM powered, s0idle) but never enters the death path.
services.logind = {
lidSwitch = "ignore";
lidSwitchExternalPower = "ignore";
lidSwitchDocked = "ignore";
};
# Keep runtime PM off on the NVMe controller and its parent root port, and
# disable PCIe wakeup events. (The previous d3cold_allowed rule was a no-op:
# that sysfs attribute doesn't exist on this Phison endpoint or its root port.)