Update manager presented 220.127.116.11 today. I upgraded as suggested.
Restart drops to low graphics mode: (EE) NVIDIA: Failed tp load NVIDIA kernel module (no drivers available).
Selecting 18.104.22.168 at boot starts desktop properly.
My card: NVIDIA 500 series
The driver which I have installed and working in 32.39 was installed using NVIDIA driver run file (from NVIDIA). This was required for proper OpenGL/GLX on my system.
Can't afford to break and follow smoke on this system.
Is the fix simply to run the "NVIDIA-Linux-x86_XX.run" again on the new kernel?