If you blacklist the vboxvideo driver, you lose the full-screen and the hardware acceleration. You forgot to mention that. I recommend pressing RIGHT SHIFT and get into GRUB menu, choose kernel 4.12 and then install synaptic, uninstall kernel 4.13 and lock version 4.12 until this is resolved. This bug appeared today around here. It's a bug in the kernel.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718679 Title: Upgrade to 4.13.0-11.12 in artful amd64 VM breaks display on wayland To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718679/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs