After a long time I could not get back to the issue I have checked the apparmor configuration file under /etc/apparmor.d/usr.sbin.mysqld
The upgrade script actually left the old version in place: /etc/apparmor.d/usr.sbin.mysqld.dpkg-old By comparing them I could identify the problem: I have a custom MySQL data directory under /home/ ... The upgrade-script was not accounting for this custom setting while changing the apparmor config file. So it changed the original directory /home/mysql/... to a standard /var/mysql ... After correcting this problem and restarting the computer I was able to configure the unconfigured package mysql-server-5.5 which solved the problem. Best thanks for hints, Nice day, Zbyněk -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1636990 Title: package mysql-server-5.5 5.5.53-0ubuntu0.14.04.1 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/1636990/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
