Nikolaus,

On Tue, Feb 14, 2023 at 11:45:16AM +0100, Nikolaus Klepp wrote:
> 21.1.6-1 does not need libseat1, 21.1.7-1 does. The errormessage from libseat1
> gives the impression. If it's wrong ... ok, what to say?

Certainly 21.1.7-1devuan1 has a patch to use libseat1. This is part of our drive
to get away from systemd.

>From NEWS:

xorg-server (2:21.1.5-1devuan1) unstable; urgency=medium

This version includes a patch to use libseat for controlling rootless startx and
access to input and video devices. libseat can use either seatd or (e)logind
as a backend. If you need to override the default choice, use the
LIBSEAT_BACKEND environment variable.

>
> > dpkg -s libseat1 shows
> >
> > Depends: seatd | logind, libc6 (>= 2.33), libsystemd0 (>= 238)
> >
> > On Devuan logind is a virtual package provided by libpam-elogind
> libpam-elogind is installed, but not libsystemd0. Installing libsystemd0
> removes libpam-elogind and installs dummy-logind. Both variants dont
> work. libsystemd0 was not pulled in during upgrade.

Please reinstall libpam-elogind. That should pull in libelogind-compat which
provides libsystemd0. It will also replace dummy-logind which you definitely
don't want (read its description).

I think libelogind-compat is the cruicial package here you were missing.

Thanks

Mark