jhk@jhk-K52Jc:~$ dpkg -l | grep nvidia
ii  nvidia-304                                                  304.125-0ubuntu0.0.1                                amd64        NVIDIA legacy binary driver - version 304.125
rc  nvidia-libopencl1-304                                       304.117-0ubuntu1                                    amd64        NVIDIA OpenCL Driver and ICD Loader library
ii  nvidia-opencl-icd-304                                       304.125-0ubuntu0.0.1                                amd64        NVIDIA OpenCL ICD
ii  nvidia-prime                                                0.6.2                                               amd64        Tools to enable NVIDIA's Prime
ii  nvidia-settings                                             331.20-0ubuntu8                                     amd64        Tool for configuring the NVIDIA graphics driver