*** This bug is a duplicate of bug 1577712 *** https://bugs.launchpad.net/bugs/1577712
@shivarajnaidu: Thanks for the tip! `sudo systemctl enable mysql.service && sudo apt upgrade` worked for me. Even though it works now, I would like to hightlight that I, like many users, disable mysql auto start. My computer is a desktop not a server. I expect to control over these kinds of app. I expect upgrade to work with mysql.service disabled. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1571764 Title: mysqld fails to start after upgrade: performance_schema definition errors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1571764/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs