Searching on the web I have found things that look similar : Here : https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1573279
and here : https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1577712 It has been decided that the first link is a duplicate of the second link. Bug 1577712 shows as Completed on 2016-07-21. Yet I'm having the same problem some 9 months later. Perhaps my situation only 'looks' similar to the previous ones. I'm going to try the 'accepted answer' at following link to see whether it fixes it or not. http://askubuntu.com/questions/760724/16-04-upgrade-broke-mysql-server I'll report back. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1678583 Title: server upgrade 14.04 to 16.04 exited with error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1678583/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs