NetworkManager-wait-online.service times out

[raboof]

Describe the bug

When I 'nixos-rebuild switch', this takes a long time, as NetworkManager-wait-online.service is timing out. The network seems to work fine, though.

I set networking.networkmanager.logLevel to DEBUG, but this didn't turn up anything obvious in journalctl yet.

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 6.7.5, NixOS, 24.05 (Uakari), 24.05.20240316.c75037b`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.2`
 - channels(root): `"nixos-20.03pre194293.2436c27541b"`
 - nixpkgs: `/home/aengelen/nixpkgs`

---

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[sdht0]

See #247608.

I use:

systemd.services.NetworkManager-wait-online = {
    serviceConfig = {
      ExecStart = [ "" "${pkgs.networkmanager}/bin/nm-online -q" ];
    };
  };

[raboof]

See #247608.

Thanks for the reference! I don't think I have networking.useNetworkd enabled, though - unclear whether it's the same issue?

I use:

systemd.services.NetworkManager-wait-online = {
    serviceConfig = {
      ExecStart = [ "" "${pkgs.networkmanager}/bin/nm-online -q" ];
    };
  };

haven't checked what that does, but it indeed does appear to make switching fast again :)

[sdht0]

Yeah I actually took it from #180175 (comment). Found it now.

[hacscred]

This is still a problem in nixos-24.05 (specifically 6e6b3dd) and should be added as a release blocker for 24.11.

People should not all be following workarounds, especially those not using networkd, since nerworkd is supposed to be the more experimental configuration.

[Enzime]

This is most likely a duplicate of #180175 which recently got fixed for Tailscale users with #344678

The fix has been backported to 24.05 in #344678 but is not available on the nixos-24.05 channel yet

[hacscred]

Enzime, I don't run tailscale. So, the "root cause" it probably is not. It might be that the tailscale resolution describes a class of root causes, but I think I don't even have custom services depending on any network* targets.

Nevertheless, I will install it when it becomes available.

[hacscred]

(The only place where I so something remotely related to this is (which has worked before):
fileSystems."/home/a" = { device = "nfsserver:/a"; noCheck = true; fsType = "nfs4"; options = ["x-systemd.automount" "vers=4" "x-systemd.requires=network-online.target" "noauto"]; };
)

The above use case is hosting a home directory on a server and it would be nice to have such a use case covered by nixpkgs tests. I don't think it's related to this issue, but it's just for completeness.

I tried with nixos-24.05 and I still got the same failure as described by OP. I tested with ecbc1ca.