kabuby@kabuby-KUB:~$ sudo dpkg -l | grep nvidia
ii  nvidia-prime                                  0.8.1                                                  amd64        Tools to enable NVIDIA's Prime
kabuby@kabuby-KUB:~$ sudo dpkg -l | grep intel 
ii  intel-microcode                               3.20150121.1                                           amd64        Processor microcode firmware for Intel CPUs
ii  libdrm-intel1:amd64                           2.4.65+git20150922.f3c6740f-0ubuntu0ricotz~vivid       amd64        Userspace interface to intel-specific kernel DRM services -- runtime
ii  libdrm-intel1:i386                            2.4.65+git20150922.f3c6740f-0ubuntu0ricotz~vivid       i386         Userspace interface to intel-specific kernel DRM services -- runtime
ii  xserver-xorg-video-intel                      2:2.99.917+git20150926.f0fd4d50-0ubuntu0sarvatt~vivid  amd64        X.Org X server -- Intel i8xx, i9xx display driver