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[Christopher Townsend <christopher.townsend@xxxxxxxxxxxxx>]

Here's the output when running 'sudo gdb program `pidof unity8`:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f58091bf700 (LWP 10614)]
0x00007f581e754e8e in SurfaceObserver::createQCursorFromMirCursorImage(mir::graphics::CursorImage const&) () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqpa-mirserver.so

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https://bugs.launchpad.net/bugs/1522117

Title:
  Unity 8 desktop session "stops" when exiting an X app

Status in canonical-pocket-desktop:
  New
Status in qtmir package in Ubuntu:
  New
Status in unity8 package in Ubuntu:
  New

Bug description:
  seeing this with just packages in the archive, no extra ppas

  With the latest qtmir (0.4.6+16.04.20151125-0ubuntu1) and unity 8
  (8.11+16.04.20151126-0ubuntu1) packages on Xenial, when exiting an X
  app, the Unity 8 session "stops".  I have seen it either go to the
  blank u-s-c screen or back to the Unity 8 greeter.

  I don't have a crash file nor have I seen any interesting info in the
  unity8.log.  If downgrade qtmir to 0.4.6+16.04.20151119-0ubuntu1 and
  unity 8 to 8.11+16.04.20151112.1, the issue no longer occurs.

  When I get the blank u-s-c screen, I do see this in the application
  log:

  [1449081140.172725] <ERROR> MirSurfaceAPI: Caught exception at client library boundary (in mir_surface_release): /build/mir-sTjxjQ/mir-0.17.1+16.04.20151105.1/src/client/rpc/stream_socket_transport.cpp(168): Throw in function virtual void mir::client::rpc::StreamSocketTransport::send_message(const std::vector<unsigned char>&, const std::vector<mir::Fd>&)
  Dynamic exception type: boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<mir::socket_disconnected_error> >
  std::exception::what: Failed to send message to server: Broken pipe
  32, "Broken pipe"
  terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<mir::socket_disconnected_error> >'
    what():  Failed to send message to server: Broken pipe

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