nvidia VA-API doesn't work in Ubuntu 12.04 LTS 64bits
in 64-bit version, the libva1 is detected with vlc player, but does not work in 
reality.
is more noticeable on Blu-rays with bit-rates above 35 Mbit / s (35000kb / s)
$ vainfo 
libva: VA-API version 0.32.0
Xlib:  extension "XFree86-DRI" missing on display ":0".
libva: va_getDriverName() returns 0
libva: Trying to open /usr/lib/x86_64-linux-gnu/dri/nvidia_drv_video.so
libva: va_openDriver() returns 0
vainfo: VA-API version: 0.32 (libva 1.0.15)
vainfo: Driver version: Splitted-Desktop Systems VDPAU backend for VA-API - 
0.7.3
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointVLD
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD

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https://bugs.launchpad.net/bugs/773466

Title:
  libva1 trying to open /usr/lib/dri/nvidia_drv_video.so ends up with
  segmentation fault

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