@geryon, can you please try what Vlad mentioned here? "Boot issue solved by removing intel-microcode package - no idea why it was installed."
I think you just need to disable iommu, but removing that package might be even better, or trying the one from bionic might also help us https://launchpad.net/ubuntu/+source/intel-microcode -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1729568 Title: [ SRU ]virtualbox-dkms 5.0.40-dfsg-0ubuntu1.16.04.1: virtualbox kernel module failed to build - error: implicit declaration of function ‘set_pages_x’ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1729568/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
