#762729 lightdm: shows systemd-related error on reconfigure when kdm is the default

Package:
lightdm
Source:
lightdm
Description:
simple display manager
Submitter:
Yann Dirson
Date:
2014-09-24 19:54:05 UTC
Severity:
normal
#762729#5
Date:
2014-09-24 19:02:33 UTC
From:
To:
I have kdm set to be the default display manager, although I also have
lightdm installed for testing purposes.

After switching from sysvinit to systemd, when running
"dpkg-reconfigure lightdm", after confirming my kdm choice, I get the
following error:

ERROR: /lib/systemd/system/kdm.service is the selected default display manager but does not exist

This message does not occur when I do the same choice with
"dpkg-reconfigure kdm" (which apparently does not know about systemd),
but does not appear either when I "dpkg-reconfigure slim" (which does
seem to know about systemd).
#762729#10
Date:
2014-09-24 19:13:15 UTC
From:
To:
My guess is that they don't handle the default display manager unit
file.
#762729#15
Date:
2014-09-24 19:51:43 UTC
From:
To:
I'm not familiar with systemd yet - I assume that by "unit file" you
mean something like what's described in systemd.unit(5).

As far as I've understood the systemd migration, Debian should still
support good old init.d scripts, which is what kdm and xdm still use.
Why then would they be required to get information for a
systemd-specific file, to do a job they've basically always done right ?