dpkg -l | grep nvidia 
ii  nvidia-340                                 340.101-0ubuntu0.16.04.1                      amd64        NVIDIA binary driver - version 340.101
ii  nvidia-340-uvm                             340.101-0ubuntu0.16.04.1                      amd64        Transitional package for nvidia-340
rc  nvidia-opencl-icd-304                      304.134-0ubuntu0.16.04.1                      amd64        NVIDIA OpenCL ICD
ii  nvidia-opencl-icd-340                      340.101-0ubuntu0.16.04.1                      amd64        NVIDIA OpenCL ICD
ii  nvidia-prime                               0.8.2                                         amd64        Tools to enable NVIDIA's Prime
ii  nvidia-settings                            361.42-0ubuntu1                               amd64        Tool for configuring the NVIDIA graphics driver