This error occurs because vbox 4.1.2 is not new enough to support 3.2 kernel. I think you'll need to remove the old guest additions module and install the one that comes with precise.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/991688 Title: virtualbox-dkms 4.1.2-dfsg-1ubuntu1: virtualbox kernel module failed to build [error: implicit declaration of function ‘iommu_found’] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/991688/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
