It does in fact appear to be an apparmor problem, the kern.log has multiple
May 18 08:51:39 orac kernel: [79075.568386] audit: type=1400 audit(1431953499.358:167): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/etc/mysql/mysql.conf.d/" pid=7960 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=122 ouid=0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1455773 Title: mysql will not start after 5.5 to 5.6 upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.6/+bug/1455773/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
