LightDM settings overwritten on reboot
I figured out how to change the background picture, remove the guest login and the grid in LightDM. And it looks great if I log out and back in. The problem is all changes made via dconf-editor disappear after a reboot.
I tried making the changes as root and update the DB afterwards, but to no avail. Where is the LightDM dconf DB loaded from?
Re: LightDM settings overwritten on reboot
Try Using Ubuntu Tweak instead: