[2016-44-29:16:44:10.737] Failed to check if source is video: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
When this happens, unity8.log says:
[2016-44- 29:16:44: 10.737] Failed to check if source is video: org.freedesktop .DBus.Error. NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.