In 7f838b4dde, we dropped systemd-udev-settle.service from display-manager.service's wants.
Unfortunately, we are doing something wrong since without it both Xorg and Wayland fail to start:
Failed to open gpu '/dev/dri/card0': GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Operation not permitted
Until we sort this out, let's add systemd-udev-settle.service to GDM to unblock the channels.
This windowManager and desktopManager doesn't even have
an option to use it. git history suggests to me that there's no way anyone
finds this useful anymore.
* Removed the use of gnome-screensaver (https://gitlab.gnome.org/GNOME/gnome-flashback/issues/18)
* Flashback's menu-related environment variables are now set in the gnome3.nix module instead of gnome-panel to resolve dependency conflict.
* nixos/gdm: Fix pulseaudio tmpfiles structure
Fix the following startup failure of the sound service in the gdm
session that was introduced by #75893:
```
Feb 16 11:44:15 qp pulseaudio[1432]: W: [pulseaudio] core-util.c: Failed to open configuration file '/run/gdm/.config/pulse//daemon.conf': Not a directory
Feb 16 11:44:15 qp pulseaudio[1432]: W: [pulseaudio] daemon-conf.c: Failed to open configuration file: Not a directory
Feb 16 11:44:15 qp systemd[1380]: pulseaudio.service: Main process exited, code=exited, status=1/FAILURE
Feb 16 11:44:15 qp systemd[1380]: pulseaudio.service: Failed with result 'exit-code'.
Feb 16 11:44:15 qp systemd[1380]: Failed to start Sound Service.
```
Co-authored-by: worldofpeace <worldofpeace@protonmail.ch>
Some display managers (e.g. SDDM) set the XDG_CURRENT_DESKTOP variable accroding to this parameter.
If this variable is not defined, there will be some problems (e.g. MATE doesn't have icons on the desktop).
Fixes https://github.com/NixOS/nixpkgs/issues/71427
We switched to unified default session option services.xserver.displayManager.defaultSession
and included fallback path for the legacy options. Unfortunately when only
services.xserver.windowManager.default is set and not services.xserver.desktopManager.default,
it got incorrectly converted to the new option.
This should fix that.
Closes: https://github.com/NixOS/nixpkgs/issues/76684
This module allows root autoLogin, so we would break that for users, but
they shouldn't be using it anyways. This gives the impression like auto
is some special display manager, when it's just lightdm and special pam
rules to allow root autoLogin. It was created for NixOS's testing
so I believe this is where it belongs.
Previously if ~/.background-image wasn't present, the background would
be set to black, which would override what the user could
set in e.g. services.xserver.windowManager.i3.extraSessionCommands