I found interesting error messages in ~/.local/share/akonadi/db_data/mysql.err. It looks like the problem might have to do with the (zero) size of a MySQL log file in that directory, which causes MySQL startup to abort. (see attachment)
** Attachment added: "Akonadi's MySQL error log" http://launchpadlibrarian.net/48695757/mysql.err -- Akonadi startup error with no MySql https://bugs.launchpad.net/bugs/578357 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs