Cuda-gdb doesn't break and/or step into kernel for cuda--gdb manual example 11.1

I’ve followed the earlier topic that assigned blame to non-nvidia installers. I installed using the installer for Ubuntu 11.10, 64 bit. I’m using a GT 610 equipped board. I’ve also used sudo service lightdm stop to terminate the X server. I’m stumped. Suggestions?

Forgot to mention that I’m using CUDA 5.0 download from nvidia dl page.