For comparision, here's my lightdm.log with the previous package version where it boots to Desktop successfully.
** Attachment added: "lightdm.log of succeeding run (xubuntu-default-settings 18.04.1)" https://bugs.launchpad.net/ubuntu/+source/xubuntu-default-settings/+bug/1752798/+attachment/5067918/+files/lightdm.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1752798 Title: prevents successful boot to desktop and gets stuck in a trying-to- start-X loop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xubuntu-default-settings/+bug/1752798/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs