Don't forget monitor orientation and layout!
The most annoying thing about Zorin when I first tried it ~2 years ago was that the live ISO correctly identified my primary monitor but the installed OS did not, instead picking a portrait-rotated screen I have at the side and, of course, not rotating the image. Even after logging in and fixing that, the settings only applied to my user account, not to gdm
which kept putting the login screen sideways on a non-primary display. I can't remember the exact command that fixed it, but it involved copying an XML file containing my monitor settings from my user folder to some gdm
config folder somewhere.
It's an ongoing issue as someone else recently posted about a similar headache, though they haven't yet replied to my suggestion of copying the config file to see if that's still the correct solution.