@Noel Thanks for that.
The pacman log is very useful.
I also used:
ls -l /var/cache/pacman/pkg/lightdm*
inspired by your command to revert the lightdm version, and that showed Feb 6 for the version…2.
I don’t know if there is any overall way to be able to revert the whole system (excluding user data) to a known good point that is commonly or easily used, because of the unintended consequences conundrum, so your pointers are very important, and are noted!
Found the use of this sort of command very useful:
systemctl status lightdm.service | curl -F [email protected] https://ptpb.pw/?u=1
and wondered if they are well used or if there are alternatives.
Also, when grappling with how to get more info, tried
command and saw some text then a black screen, and wanted to know if there is a way to see that text. It probably wasn’t helpful anyway, but still…