Its worth noting that upgrading from 18.04 to 19.10 is supported see bug 1497024 for background information.
The AptLog indicates that there was at a minimum a problem with graphics drivers you have installed from a PPA, although if you only purge that PPA you may encounter other issues. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1868625 Title: can't upgrade from 18.04 to 19.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1868625/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
