Stable 22.05 user here, with kde as desktop manager + lightdm as display manager with wayland. I have home-manager to manage users. Lately I have this consistent error (although the error doesn’t seem to capsize anything, I can still login OK):
$ sudo systemctl --failed
UNIT LOAD ACTIVE SUB DESCRIPTION
● session-c1.scope loaded failed failed Session c1 of User lightdm
LOAD = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB = The low-level unit activation state, values depend on unit type.
1 loaded units listed.
Can anyone guess why the above error is happening? Do I need some additional declaration with respect to lightdm? packagekit and update-locatedb services occasionally fail as well, but seem to survive a restart, sudo systemctl restart packagekit.service update-locatedb.service.
Here’s the relevant section of my configuration.nix. Some statements I understand, but others I don’t, at least not fully (still trying to master nix language). Would appreciate any insights, comments (particularly if something seems odd):
{ config, pkgs, callPackage, ... }:{
nixpkgs.config = {
allowUnfree = true;
permittedInsecurePackages = [
"electron-9.4.4"
];
};
imports =
[ # Include the results of the hardware scan.
./hardware-configuration.nix
<home-manager/nixos>
];
boot.loader.grub.enable = true;
boot.loader.grub.version = 2;
boot.loader.grub.device = "/dev/sdc"; # or "nodev" for efi only
boot.loader.grub.gfxmodeBios = "1920x1080,1280x1024,auto";
boot.loader.grub.gfxpayloadBios = "keep";
boot.initrd.kernelModules = [ "amdgpu" ];
services = {
avahi = {
enable = true;
nssmdns = true;
};
xserver = {
enable = true;
layout = "us";
videoDrivers = [ "amdgpu" ];
desktopManager.plasma5 = {
enable = true;
};
displayManager = {
defaultSession = "plasmawayland";
lightdm = {
enable = true;
greeter.enable = true;
};
};
};
cron = {
enable = true;
systemCronJobs = [
"0 * * * * /run/current-system/sw/bin/updatedb"
];
};
interception-tools.enable = true;
printing = {
enable = true;
drivers = with pkgs; [
canon-cups-ufr2
];
};
locate = {
enable = true;
localuser = null;
locate = pkgs.mlocate;
pruneNames = [ ".git" ".tmp" ];
prunePaths = [ "/tmp" "/var/cache" "/var/lock" "/var/run" "/var/spool" "/run/media" "/plex" ];
interval = "hourly";
};
openssh.enable = true;
# I've commented this next statement out, as I assumed `packagekit` was automatically enabled elsewhere (I get the `systemd session` regardless).
# packagekit.enable = true;
dbus.packages = [ pkgs.dconf ];
};
security.pam.services = {
lightdm-greeter.enableKwallet = true;
lightdm.enableKwallet = true;
lightdm.enableGnomeKeyring = true;
kwallet = {
name = "kwallet";
enableKwallet = true;
};
};