Looks like the real culprit here is having casper depend upon ubiquity. I suspect before the removal of udeb packages (including localechooser-data which was the alternative to the depend otherwise satisfied by ubiquity), we never ran into this problem simply because of localechooser-data: https://bugs.launchpad.net/ubuntu/+source/preseed/+bug/1923833
** Package changed: calamares (Ubuntu) => casper (Ubuntu) ** Changed in: casper (Ubuntu) Importance: Undecided => Critical -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1923881 Title: Lubuntu and Ubuntu Studio Hirsute incorrectly launch Ubiquity installer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1923881/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs