The problem was lack of /etc/mysql/my.cnf (in my case) or a problem in that file.
Just put the content from next link in that file and do: sudo dpkg --reconfigure -a http://paste.ubuntu.com/928346/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/973951 Title: package mysql-server-5.5 5.5.22-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.5/+bug/973951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
