lightdm won't start with pantheon-greeter

[charlie45000]

What Happened?

Hello,

I don't use the elementary desktop environment by like the look of the pantheon greeter. I tried to install it, but it refuses to start. the seat logfile of lightdm is in the log output.

With the gtk-greeter, the dbus warning is still there, but the greeter starts anyway. how to avoid this glib error?

I suppose that this is linked to the removal of the background settings since I don't see how to set a backgroud. Is it a bug or am I missing something?

Thank-you for your help!

Steps to Reproduce

• install lightdm-pantheon-greeter on an Archlinux fresh install using xorg
• launch lightdm --test-mode --debug in user mode
• the crash should appen and be logged in $HOME/.cache/lightdm/log

Expected Behavior

The greeter should start correctly

OS Version

Other Linux

OS Architecture

amd64 (on most hardwares)

Session Type

Secure Session (Wayland, This is the default), Classic Session (X11)

Software Version

Latest release (I have run all updates)

Log Output

** (process:15733): WARNING **: 21:24:37.769: Failed to open CK session: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name is not activatable
libmutter-Message: 21:24:37.827: Running Mutter(GreeterCompositor) (using mutter 46.9) as a X11 window and compositing manager
Xlib:  extension "DPMS" missing on display ":1".
Xlib:  extension "DPMS" missing on display ":1".

(io.elementary.greeter-compositor:15737): GLib-GIO-ERROR **: 21:24:38.049: Settings schema 'io.elementary.desktop.background' is not installed
libEGL warning: DRI3 error: Could not get DRI3 device
libEGL warning: Ensure your X server supports DRI3 to get accelerated rendering

Hardware Info

No response

[danirabbit]

Hi yes, the elementary Greeter depends on keys from elementary settings daemon among other things listed here:

greeter/debian/control

Line 23 in 5995f6f

Depends: io.elementary.settings-daemon (>=8.4.0),

[charlie45000]

Thank-you for your quick answer!
I installed this package since it seams to be the closest match in the arch repositories

The problem is still not solved though, but I suppose that I have to activate a service or something? Or is an other dependency missing in the arch packages that I need to install?

[danirabbit]

It looks like that schema is actually provided by Gala: https://github.com/elementary/gala

I suppose the Arch package should be updated to pull it in as a runtime dependency, so you might want to file that issue with arch maintainers

[charlie45000]

It does work now, but I don't really understand how the theme and background can be configured. the "settings" package does not open anything

[danirabbit]

It's not really meant to be used outside of Pantheon. It all kind of goes together. elementary settings daemon syncs configuration to greeter

[charlie45000]

thank you for the precision. I used lightdm and the greeter a few years ago, but things seams to have change now....

Thank-you for the help!