Problems booting after update

DinnerBug · January 20, 2025, 9:18am

Success!(?) I restarted 3 times and it worked all 3. Logs were still empty though…
This is the config so far

  # Enable the KDE Plasma Desktop Environment.
  services.displayManager.sddm.enable = true;
  services.desktopManager.plasma6.enable = true;

  # Test
  services.displayManager.sddm.wayland.enable = false;
  services.displayManager.ly.enable = false;

Postboote · January 20, 2025, 9:26am

great. So it is wayland related.
If you want more infos this is the Github issue.

github.com/NixOS/nixpkgs

SDDM Greeter crashes in some combination used with kwin

opened 07:26PM - 13 May 24 UTC

closed 08:28PM - 15 Aug 24 UTC

Svenum

0.kind: bug 6.topic: nixos 6.topic: qt/kde

### Describe the bug If kwin is the compositor of sddm you only get a black scr…een after boot. It worked fine before I updated my nixos flake. ### Steps To Reproduce Steps to reproduce the behavior: 1. Enable sddm like this: ```nix service.displayManager.sddm = { enable = true; wayland = { enable = true; compositor = "kwin"; }; autoNumlock = true; }; ``` 2. Build config `nixos-rebuild boot` 3. Reboot system ### Expected behavior The Login screen should appear and `CTRL + F1` - `CTRL + F6` should give an terminal output. ### Additional context output of `journalctl -b -1 -u display-manager.service`: ```console Mai 13 21:06:33 Yon systemd[1]: Started Display Manager. Mai 13 21:06:33 Yon sddm[1545]: Initializing... Mai 13 21:06:33 Yon sddm[1545]: Starting... Mai 13 21:06:33 Yon sddm[1545]: Logind interface found Mai 13 21:06:33 Yon sddm[1545]: Adding new display... Mai 13 21:06:33 Yon sddm[1545]: Loaded empty theme configuration Mai 13 21:06:33 Yon sddm[1545]: Using VT 7 Mai 13 21:06:33 Yon sddm[1545]: Display server started. Mai 13 21:06:33 Yon sddm[1545]: Socket server starting... Mai 13 21:06:33 Yon sddm[1545]: Socket server started. Mai 13 21:06:33 Yon sddm[1545]: Loading theme configuration from "/run/current-system/sw/share/sddm/themes/breeze/theme.conf" Mai 13 21:06:33 Yon sddm[1545]: Greeter starting... Mai 13 21:06:33 Yon sddm-helper[1550]: Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8. Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead. If this causes problems, reconfigure your locale. See the locale(1) manual for more information. Mai 13 21:06:33 Yon sddm-helper[1550]: [PAM] Starting... Mai 13 21:06:33 Yon sddm-helper[1550]: [PAM] Authenticating... Mai 13 21:06:33 Yon sddm-helper[1550]: [PAM] returning. Mai 13 21:06:33 Yon sddm[1545]: Greeter session started successfully Mai 13 21:06:35 Yon sddm[1545]: Message received from greeter: Connect Mai 13 21:06:56 Yon sddm[1545]: Error from greeter session: "Process crashed" Mai 13 21:06:56 Yon sddm[1545]: Auth: sddm-helper (--socket /tmp/sddm-auth-28334843-3453-40d7-b871-f96a6180049c --id 2 --start /nix/store/4vr0hbjmbnmr8k5gv4mdwfvc36csr6pr-sddm-wrapped/bin/sddm-greeter-qt6 --socket /tmp/sddm--UJfsPi --theme /run/current-system/sw/share/sddm/themes/breeze --user sddm --display-server /nix/store/rizf7g8a5w26lxamz1f5d41knd01pivk-kwin-6.0.4.1/bin/kwin_wayland --no-global-shortcuts --no-kactivities --no-lockscreen --locale1 --greeter) crashed (exit code 1) Mai 13 21:06:56 Yon sddm[1545]: Error from greeter session: "Process crashed" Mai 13 21:06:56 Yon sddm[1545]: Auth: sddm-helper exited with 1 Mai 13 21:06:56 Yon sddm[1545]: Greeter stopped. SDDM::Auth::HELPER_AUTH_ERROR Mai 13 21:06:56 Yon systemd[1]: Stopping Display Manager... Mai 13 21:06:56 Yon sddm[1545]: Signal received: SIGTERM Mai 13 21:06:56 Yon sddm[1545]: Socket server stopping... Mai 13 21:06:56 Yon sddm[1545]: Socket server stopped. Mai 13 21:06:56 Yon systemd[1]: display-manager.service: Deactivated successfully. Mai 13 21:06:56 Yon systemd[1]: Stopped Display Manager. ``` ### Notify maintainers @SuperSandro2000 @abbradar @ttuegel @k900 @ ### Metadata ```console [user@system:~]$ nix-shell -p nix-info --run "nix-info -m" - system: `"x86_64-linux"` - host os: `Linux 6.8.9, NixOS, 24.05 (Uakari), 24.05.20240512.2057814` - multi-user?: `yes` - sandbox: `yes` - version: `nix-env (Nix) 2.23.0pre20240502_00ca2b05` - channels(root): `"nixos"` - nixpkgs: `/nix/store/vsbi6gfwf2bdamw0d0d9xndb1rrxfnbk-source` ``` --- Add a :+1: [reaction] to [issues you find important]. [reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/ [issues you find important]: https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc

Maybe something with the localisation.
But if it works that is great. No need to run sddm in wayland

DinnerBug · January 20, 2025, 9:42am

Thank you so much for your help and dedication. You’ve solved quite the problem for me.
Which of our posts should I select as solution from this topic?

Postboote · January 20, 2025, 9:51am

no problem. The solve is sddm.wayland.enable = false