This is not the normal "black screen"issue and I was shocked to eventually find out why. The normal advice of reconfiguring Xorg didn't work. Even booting into "Recovery Mode" did not help.
Here is the short end of the stick that fixed it:
sudo apt-get install mdm mate-desktop-environment
Yes you got it right, mdm and the mate-desktop-environment / gnome were somehow uninstalled. This must be whe........
Solution:
Aptitude is very smart and fixed the issues it was because of nvidia cuda and opencl and nothing else suggested or hinted this using apt
sudo aptitude install wine
The following NEW packages will be installed:
ocl-icd-libopencl1{ab} ocl-icd-libopencl1:i386{ab} wine wine1.6
wine1.6-amd64{a} wine1.6-i386:i386{a}
The following packages will be REMOVED:........