Bug#922647: Info received (Bug#922647: systemd --user no longer running)

[Julien Leproust]

Hi,

I found the issue.

When looking for /etc files not belonging to any package, I discovered 
that /etc/pam.d/common-* files are managed by pam-auth-update.

Most pam profiles were enabled, except "Register user sessions in the 
systemd control group hierarchy", and just enabling it fixed the 
problem. The systemd user service and logind session are now correctly 
started and everything works fine (device permissions, pulseaudio, etc).

The real issue becomes why this pam profile got disabled in the first place.

Thanks everyone for your help.

Best regards,

-- 
Julien Leproust