I suspect the problem is that purging MariaDB doesn't remove the database (the maintainer scripts are supposed to ask, but seems there's a bug with this). MariaDB and MySQL are no long valid drop-in replacements of each other, so MySQL won't be able to to work with a MariaDB database, which is probably why the installation fails. rm -rf -ing /var/lib/mysql and /etc/mysql should fix it.
I can try testing with MariaDB on my box and see if I get the same result, at least. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1592749 Title: MySQL 5.7 slow with Bacula 7.4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1592749/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs