Comment 6 for bug 935565

a) Sorry, I have not time to reproduce the bug again and take a video and may be you don't need a video, the bug is very clear.

Precise by default has the video output as auto in gstreamer-properties. that means that the output is auto selected between X11/Xv and X11/Shm.

As you can see in xvinfo has the right graphics support, but if you play any video on totem or vlc or mplayer the session is unexpectedly closed and go out to lightdm screen. This not happens with xbmc. This make me suspect about some bug that affect those players.

Later I discover that if we change the video output as X11/Shm (not Xv) on gstreamer-properties, all the players play any video without any trouble.

Seems as the Xv is selected on auto, because as you can see on xvinfo is supported, but when you make this parameter as auto or Xv in configuration, the session is unexpectedly closed and go to lightdm screen.

As you can understand, users sees as the unity session crash