Regards lightdm 1.15.0.

LightDM won't show after latest update. I did a eopkg up and rebooted later. I had to install gdm to be able to work afterwards.

Related logs:
https://hastebin.com/ibogacijip.go
/var/log/lightdm/x-0-greeter.log : https://hastebin.com/ihuhavohuz.pas
/usr/share/lightdm/lightdm-gtk-greeter.conf.d/10_solus_default.conf : https://hastebin.com/ecebefidup.vbs
no /etc/lightdm

Let me know if any more logs/files/data needed.