The lock screen and login screen graphics are provided by the the gnome-shell package.
I think the problem here may be that some instances may be running as a different user (gdm), so your own personal settings won't apply to those.
The lock screen and login screen graphics are provided by the the gnome-shell package.
I think the problem here may be that some instances may be running as a different user (gdm), so your own personal settings won't apply to those.