This problem may have been reported earlier but I was unable to find a solution to this. after trying to install Nvidia drivers my Ubuntu session changed to ubuntu-2d and I am unable to restore it to Ubuntu 3d. Which drivers I may need to install/remove to solve this problem?
For further reference, heres a pic of how my workspace switcher looks like when changing workspaces.
I would like it to be as it was when Ubuntu was first installed.