That was due to a running docker instance which was using port 3306 so that restarting the mysql server failed.
After stopping the docker instance I could just run apt-get upgrade and the update completed as usual. This is not a bug. Close this issue. ** Changed in: mysql-5.7 (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/1767007 Title: package mysql-server 5.7.22-0ubuntu0.16.04.1 failed to install/upgrade: Abhängigkeitsprobleme - verbleibt unkonfiguriert To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1767007/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs