Seems to me that it's akonadi that is failing to shut mysqld down properly when it is running 5.5 that is causing the issue - possibly with lack of database migration to 5.6?
There's a separate crash bug in mysqld that should be fixed (it shouldn't segfault no matter what really), but I'll add a task back for akonadi as it is the akonadi package that needs to keep affairs in ~/.local/share/akonadi/ in order. ** Also affects: akonadi (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to mysql-5.6 in Ubuntu. https://bugs.launchpad.net/bugs/1437846 Title: akonadi mysql 5.6 crash with signal 11 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/akonadi/+bug/1437846/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs