root@WZVDR:~# dpkg -l | egrep "vdpau|nvidia"
ii  libvdpau1                                      0.4.1-0yavdr3                                   Video Decode and Presentation API for Unix (
ii  nvidia-173-modaliases                          173.14.22-0ubuntu11                             Modaliases for the NVIDIA binary X.Org drive
ii  nvidia-96-modaliases                           96.43.17-0ubuntu1                               Modaliases for the NVIDIA binary X.Org drive
ii  nvidia-common                                  0.2.23                                          Find obsolete NVIDIA drivers
ii  nvidia-current                                 270.26-0yavdr2                                  NVIDIA binary Xorg driver, kernel module and
ii  nvidia-current-modaliases                      270.26-0yavdr2                                  Modaliases for the NVIDIA binary X.Org drive
ii  nvidia-settings                                270.18-0ubuntu1~lucid~xup1                      Tool of configuring the NVIDIA graphics driv
ii  vdpauinfo                                      0.0.6-1~karmic~nvidiavdpauppa1

root@WZVDR:~# lsmod | grep -i nvidia
nvidia               9713929  54
agpgart                31724  1 nvidia