Reinstalling mysql-server as suggested here (http://askubuntu.com/questions/125686/mysql-fails-to-start-after- upgrade-installation-etc) seems worked for me, on Ubuntu 13.10
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1244424 Title: package mysql-server-5.5 5.5.34-0ubuntu0.13.10.1 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/1244424/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs