Comment 3 for bug 1369512

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Jamie Strandboge (jdstrand) wrote : Re: None of the torch app starts

Here is the relevant output:
"Failed to start a new media-hub player session: org.freedesktop.DBus.Error.AccessDenied: An AppArmor policy prevents this sender from sending this message to this recipient, 0 matched rules; type="method_call", sender=":1.309" (uid=32011 pid=12412 comm="/usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene $@ u") interface="core.ubuntu.media.Service" member="CreateSession" error name="(unset)" requested_reply="0" destination="core.ubuntu.media.Service" (uid=32011 pid=2865 comm="media-hub-server ")
Failed to create a new media player backend. Video playback will not function."

The app is trying to play media of some sort and the media-hub is used for playback. As such, these apps need to use the appropriate policy group in their security json. Eg, audio or video.