I've done extensive testing and I recommend pulling in the latest package form Debian git master to Ubuntu as it will include fixes for this and no regressions:
https://lists.alioth.debian.org/pipermail/pkg-mysql- maint/2015-April/007707.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1439950 Title: MariaDB 14.04 -> 15.04 upgrade fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mariadb-5.5/+bug/1439950/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
