I have the same problem with linux-image-4.13.0-38 on xenial and i7-3520M. It's unbootable right now. The only workaround is noibpb as boot parameter.
I have the same problem with linux-image- 4.13.0- 38 on xenial and i7-3520M. It's unbootable right now. The only workaround is noibpb as boot parameter.