This bug was fixed in the package ubuntu-settings - 17.10.9
--------------- ubuntu-settings (17.10.9) artful; urgency=medium
* debian/ubuntu-settings.gsettings-override: - Set GDM lock screen background to Ubuntu default (LP: #1703326)
-- Jeremy Bicha <email address hidden> Fri, 28 Jul 2017 16:14:51 -0400
This bug was fixed in the package ubuntu-settings - 17.10.9
---------------
ubuntu-settings (17.10.9) artful; urgency=medium
* debian/ ubuntu- settings. gsettings- override:
- Set GDM lock screen background to Ubuntu default (LP: #1703326)
-- Jeremy Bicha <email address hidden> Fri, 28 Jul 2017 16:14:51 -0400