See https://github.com/NixOS/nixpkgs/issues/73095
It looks like it can finally be removed: the `Failed to open gpu
'/dev/dri/card0'` error is gone and the nixosTests.gnome test is
passing (checked 4 times in a row).
To avoid extra flickering on boot, we want GDM to tell Plymouth to
quit after GDM takes control of the display. That configuration was
reverted in #71065 because it caused ‘nixos-rebuild switch’ to bring
down the graphical session. The reason was that if multi-user.target
wants plymouth-quit.service which conflicts display-manager.service,
then when ‘nixos-rebuild switch’ starts multi-user.target,
display-manager.service is stopped so plymouth-quit.service can be
started. We avoid this problem by removing WantedBy:
multi-user.target from plymouth-quit.service.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Since systemd 243, docs were already steering users towards using
`journal`:
eedaf7f322
systemd 246 will go one step further, it shows warnings for these units
during bootup, and will [automatically convert these occurences to
`journal`](f3dc6af20f):
> [ 6.955976] systemd[1]: /nix/store/hwyfgbwg804vmr92fxc1vkmqfq2k9s17-unit-display-manager.service/display-manager.service:27: Standard output type syslog is obsolete, automatically updating to journal. Please update│······················
your unit file, and consider removing the setting altogether.
So there's no point of keeping `syslog` here, and it's probably a better
idea to just not set it, due to:
> This setting defaults to the value set with DefaultStandardOutput= in
> systemd-system.conf(5), which defaults to journal.
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.
* 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>
Fixes this error from `nixos-rebuild switch` introduced by #75893:
setting up tmpfiles
[/etc/tmpfiles.d/nixos.conf:7] Invalid age 'yes'.
warning: error(s) occurred while switching to the new configuration
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
The upstream session files display managers use have no concept of sessions being composed from
desktop manager and window manager. To be able to set upstream session files as default
session, we need a single option. Having two different ways to set default session would be confusing,
though, so we decided to deprecate the old method.
We also created separate script for each session, just like we already had a separate desktop
file for each one, and started using displayManager.sessionPackages mechanism to make the
session handling more uniform.
Having a default session resulted in GDM not remembering the last used
session.
So do not force the session until setSessionScript is made aware of the
last session used.
Unfortunately, you can't configure the default user-session
with GDM like lightdm. I've opened a feature request [0]
but I'd like to be able to do this now.
We use a GObject Python script using bindings to AccountsService
to achieve this. I'm hoping the reliable heuristic for session names
is the file's basename. We also have some special logic for which
method to use to set the default session. It seems set_x_session is
deprecated, and thusly the XSession key, but if that method isn't used
when it's an xsession it won't be the default in GDM.
[0]: https://gitlab.gnome.org/GNOME/gdm/issues/535
GDM is now killed if tty1 is started after gdm is launched. This follows
upstream's gdm service config.
This might cause problems with nixos-rebuild switch though. See the reasoning
and work that led to not following upstream on this:
https://github.com/NixOS/nixpkgs/issues/214394a180dac46d4da
This is necessary when system-wide dconf settings must be configured, i.e. to
disable GDM's auto-suspending of the machine when no user is logged in.
Related to https://github.com/NixOS/nixpkgs/issues/42053.
Switch from slim to lightdm as the display-manager.
If plasma5 is used as desktop-manager use sdddm.
If gnome3 is used as desktop-manager use gdm.
Based on #12516
This makes it easier to support a wider variety of .desktop session files. In
particular this makes it possible to use both the «legacy» sessions and upstream
session files.
We separate `xsession` into two parts, `xsessionWrapper` and `xsession`.
`xsessionWrapper` sets up the correct environment and then lauches the session's
Exec command (from the .desktop file), falling back to launching the default
window/desktopManager through the `xsession` script (required by at least some
nixos tests).
`xsession` then _only_ handles launching desktop-managers/window-managers defined
through `services.xserver.desktopManager.session`.
Previously, the mkDesktops function produced a flat package containing
session files in the top level. As a preparation for introduction of
Wayland sessions, the files will now be placed to $out/share/xsessions.
