[CentOS] Can't configure GDM after update to CentOS 7.6

Thu Dec 6 13:41:06 UTC 2018
Jonathan Billings <billings at negate.org>

On Thu, Dec 06, 2018 at 10:01:25AM +0100, Nicolas Kovacs wrote:
> Now with CentOS 7.6 this doesn't work anymore. The /etc/dconf/db/gdm.d
> directory is nowhere to be found, and I'm currently mildly cursing the
> GNOME developers' (and Red Hat's) policy of releasing moving targets.
> Until now, the whole purpose of Enterprise Linux seemed to be low-risk
> updates. </rant>

While the /etc/dconf/db/gdm.d/ directory doesn't exist, I've got many
RHEL7.6 and CentOS 7.6 systems where GDM behaves the same way as
before, as long as you create /etc/dconf/db/gdm.d/ and put the files
in there, and as soon as you run 'dconf update', you see it change.

I'm not sure why the /etc/dconf/db/gdm.d/ and
/etc/dconf/db/gdm.d/locks/ directory aren't owned by a package
anymore, that seems like a bug, but as far as I can tell, GDM
continues to get its information from there.

Jonathan Billings <billings at negate.org>