The "nv" driver worked fine but it doesn't allow me to enable desktop effects. Also, I really want the full hardware acceleration so I can do some OpenGL programming. After search around the ubuntu package repository, I found several versions of the old familiar nvidia-glx. So I installed the latest one with:
sudo apt-get install nvidia-glx-180Another surprise was that it no longer updates the xorg.conf file for me so I ended up running nvidia-xconfig myself by:
sudo nvidia-xconfigThis overrides the xorg.conf file to make sure X server loads the proprietary "nvidia" rather than open source "nv" driver. I wonder what the Ubuntu team was thinking, this definitely felt like a step backward. Were they trying to push people to use the open source "nv" driver?