Hi Yves-Alexis, It might be helpful to include the contents of /etc/lightdm/lightdm-gtk-greeter.conf.d/*, as well as the lightdm-gtk-greeter.conf before and after attempting to modify it using l-g-g-s.
Toggling the "Redefine indicators" option seems to work fine here with a single conf file and with a split setup: I tested briefly by copying my background entry from lightdm-gtk-greeter.conf into a new file under /etc/lightdm/lightdm-gtk-greeter.conf.d/. That said, I haven't tried the external indicators feature as I'm honestly not sure how to set it up - I don't know if there even are relevant indicator libs on my system. Best, James
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