Comment 6 for bug 1300215

I'll add some details

I have a Intel X3100 (GM965)
# lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 03)

# vdpauinfo
display: :0.0 screen: 0
Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
Error creating VDPAU device: 1

I have searched for /etc/X11/Xsession.d/20vdpau-va-gl and not exist so I have installed a new package
#apt-get install libvdpau-va-gl1

With the new package the output of vdpauinfo is different but I'm not sue if VDPAU is really working

$mplayer /tmp/h264_1080p_hp_4.1_40mbps_birds.mkv
Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
[vdpau] Error when calling vdp_device_create_x11: 1

$ VDPAU_DRIVER=va_gl mplayer /tmp/h264_1080p_hp_4.1_40mbps_birds.mkv
[VS] Software VDPAU backend library initialized
libva info: VA-API version 0.35.1
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_32
libva error: /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so init failed
libva info: va_openDriver() returns -1