I'm not quite sure what is meant by "unofficial" kernels. The one in question was retrieved from http://kernel.ubuntu.com/~kernel- ppa/mainline/v3.11-rc1-saucy/ which I believe is the official Ubuntu kernel repositories.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1201516 Title: virtualbox-guest-dkms 4.2.10-dfsg-1ubuntu2: virtualbox-guest kernel module failed to build [error: unknown field ‘readdir’ specified in initializer] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1201516/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs