I am seeing timeout from the approver while trying to create an instance
of media-hub in the dbus.log file.

Media-hub is a telepathy observer (it watches telepathy to stop music
when there is an incoming call), and telepathy by design won't forward
the incoming call to the approver (to display the snap decision) until
all observers confirm receiving the incoming channel first.

If media-hub is really stuck for some reason, that would explain the
issue, since after a dbus timeout trying to deliver the channel to
media-hub, telepathy would still try to deliver the channel to the
approver, which would make the snap decision appear, and quickly
disappear (since the incoming call is already gone).

This is a guess, but seems to match what Matthew described, and what I
see in the logs:

-----

virtual QMediaService* AalServicePlugin::create(const QString&)
"org.qt-project.qt.mediaplayer"
Failed to start a new media-hub player session:
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.
Failed to create a new media player backend. Video playback will not function.

Could not finish contructing new AalMediaPlayerService instance since
m_hubPlayerSession is NULL

----

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https://bugs.launchpad.net/bugs/1588127

Title:
  Phone abandons incoming call

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