Thanks for your report. Xorg packages from the padoka PPA are blocking the upgrade. Please revert to official versions of these package and try the upgrade again.
I'm closing this report because it is not a bug with Ubuntu. Do not hesitate to report any bug you may find. ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1789111 Title: LTS Distro upgrde fails. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1789111/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs