The user which is running lightdm starts all "user" services which are
enabled by default, which might include pipewire (and I guess
pulseaudio), gnupg.. synchthing.

I find this behavior undersiderable. pipewire/pulseaudio could probably
by used by the theme to provide audio in the session, but most other
services only make sense for a real user.

It seems like lightdm might befinit from a strictly defined list of
services instead of starting a full-fledged user session that results in
this behavior.

Hi,

I assume you're talking about systemd user services or something? I don't
think there's any specific code in lightdm about starting manually pulseaudio,
pipewire or anything, so I don't think there's a way to special cases some
thing.

Regards,

Yes, the issue is that lightdm starts automatically all systemd's user
services (anything which is installed in the default.target in
/usr/lib/systemd/user/) probably because it is creating a full user
session?

Is there anything else than “a full user session”. I don't think lightdm has
any specific support for user session so it's likely started through other
means.

Regards,