For some reason, having done the process of removing nvidia, virtual box, installing the 4.16 kernel, removing the 4.16 kernel, reinstalling nvidia and virualbox, my system now boots the 4.13.0-32 kernel. Not sure what fixed it.
For some reason, having done the process of removing nvidia, virtual box, installing the 4.16 kernel, removing the 4.16 kernel, reinstalling nvidia and virualbox, my system now boots the 4.13.0-32 kernel. Not sure what fixed it.