interima@FX6350:/etc/X11/Xsession.d$ dpkg -l | grep nvidia
ii  nvidia-331                                                  331.113-0ubuntu1~xedgers14.04.1                        amd64        NVIDIA binary driver - version 331.113
ii  nvidia-331-uvm                                              331.113-0ubuntu1~xedgers14.04.1                        amd64        NVIDIA Unified Memory kernel module
rc  nvidia-340                                                  340.65-0ubuntu1~xedgers14.04.1                         amd64        NVIDIA binary driver - version 340.65
ii  nvidia-opencl-icd-331                                       331.113-0ubuntu1~xedgers14.04.1                        amd64        NVIDIA OpenCL ICD
rc  nvidia-opencl-icd-340                                       340.65-0ubuntu1~xedgers14.04.1                         amd64        NVIDIA OpenCL ICD
ii  nvidia-settings                                             346.22-0ubuntu1~xedgers14.04.1                         amd64        Tool for configuring the NVIDIA graphics driver


interima@FX6350:/etc/X11/Xsession.d$ lspci -knn | egrep -A 3 'VGA|3D'
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GM107 [GeForce GTX 750] [10de:1381] (rev a2)
        Subsystem: ZOTAC International (MCO) Ltd. Device [19da:288b]
01:00.1 Audio device [0403]: NVIDIA Corporation Device [10de:0fbc] (rev a1)
        Subsystem: ZOTAC International (MCO) Ltd. Device [19da:288b]