#0  0x00007f0ea25a35c8 in gsettings_changed_cb (settings=<optimized out>, settings_key=0xecd775 "active", manager=0xf5e2f0) at gsd-media-keys-manager.c:828
  823: 
  824:         if (manager->priv->have_legacy_keygrabber)
  825:                 gdk_error_trap_push ();
  826: 
  827:         /* Find the key that was modified */
  828:         for (i = 0; i < manager->priv->keys->len; i++) {
  829:                 MediaKey *key;
  830: 
  831:                 key = g_ptr_array_index (manager->priv->keys, i);
  832: 
  833:                 /* Skip over hard-coded and GConf keys */
#1  0x00007f0ec8b62f29 in g_cclosure_marshal_VOID__STRINGv (closure=0x10144a0, return_value=<optimized out>, instance=<optimized out>, args=<optimized out>, marshal_data=<optimized out>, n_params=<optimized out>, param_types=0xf338d0) at /build/buildd/glib2.0-2.40.0/./gobject/gmarshal.c:1004
  [Error: /build/buildd/glib2.0-2.40.0/./gobject/gmarshal.c was not found in source tree]
#2  0x00007f0ec8b605e7 in _g_closure_invoke_va (closure=0x10144a0, return_value=0x0, instance=0xf425c0, args=0x7fffe2e779e8, n_params=1, param_types=0xf338d0) at /build/buildd/glib2.0-2.40.0/./gobject/gclosure.c:831
  [Error: /build/buildd/glib2.0-2.40.0/./gobject/gclosure.c was not found in source tree]
#3  0x00007f0ec8b79088 in g_signal_emit_valist (instance=0xf425c0, signal_id=<optimized out>, detail=754, var_args=var_args@entry=0x7fffe2e779e8) at /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c:3215
  [Error: /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c was not found in source tree]
#4  0x00007f0ec8b79ce2 in g_signal_emit (instance=instance@entry=0xf425c0, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c:3363
  [Error: /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c was not found in source tree]
#5  0x00007f0ec8e575ec in g_settings_real_change_event (settings=0xf425c0, keys=<optimized out>, n_keys=1) at /build/buildd/glib2.0-2.40.0/./gio/gsettings.c:277
  [Error: /build/buildd/glib2.0-2.40.0/./gio/gsettings.c was not found in source tree]
#6  0x00007f0ec4e98adc in ffi_call_unix64 () at ../src/x86/unix64.S:76
  [Error: ../src/x86/unix64.S was not found in source tree]
#7  0x00007f0ec4e9840c in ffi_call (cif=cif@entry=0x7fffe2e77d60, fn=0x7f0ec8e57580 <g_settings_real_change_event>, rvalue=0x7fffe2e77c90, avalue=avalue@entry=0x7fffe2e77c30) at ../src/x86/ffi64.c:522
  [Error: ../src/x86/ffi64.c was not found in source tree]
#8  0x00007f0ec8b61055 in g_cclosure_marshal_generic_va (closure=0xedf6f0, return_value=0x7fffe2e77ea0, instance=0xf425c0, args_list=<optimized out>, marshal_data=0x7f0ec8e57580 <g_settings_real_change_event>, n_params=2, param_types=0xedf940) at /build/buildd/glib2.0-2.40.0/./gobject/gclosure.c:1541
  [Error: /build/buildd/glib2.0-2.40.0/./gobject/gclosure.c was not found in source tree]
#9  0x00007f0ec8b605e7 in _g_closure_invoke_va (closure=0xedf6f0, return_value=0x7fffe2e77ea0, instance=0xf425c0, args=0x7fffe2e77fa8, n_params=2, param_types=0xedf940) at /build/buildd/glib2.0-2.40.0/./gobject/gclosure.c:831
  [Error: /build/buildd/glib2.0-2.40.0/./gobject/gclosure.c was not found in source tree]
#10 0x00007f0ec8b79088 in g_signal_emit_valist (instance=0xf425c0, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7fffe2e77fa8) at /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c:3215
  [Error: /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c was not found in source tree]
#11 0x00007f0ec8b79ce2 in g_signal_emit (instance=instance@entry=0xf425c0, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c:3363
  [Error: /build/buildd/glib2.0-2.40.0/./gobject/gsignal.c was not found in source tree]
#12 0x00007f0ec8e5726e in settings_backend_changed (target=0xf425c0, backend=<optimized out>, key=<optimized out>, origin_tag=<optimized out>) at /build/buildd/glib2.0-2.40.0/./gio/gsettings.c:337
  [Error: /build/buildd/glib2.0-2.40.0/./gio/gsettings.c was not found in source tree]
#13 0x00007f0ec8e52dca in g_settings_backend_invoke_closure (user_data=0x7f0eb000f8c0) at /build/buildd/glib2.0-2.40.0/./gio/gsettingsbackend.c:267
  [Error: /build/buildd/glib2.0-2.40.0/./gio/gsettingsbackend.c was not found in source tree]
#14 0x00007f0ec8890ce5 in g_main_dispatch (context=0xeff7e0) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3064
  [Error: /build/buildd/glib2.0-2.40.0/./glib/gmain.c was not found in source tree]
#15 g_main_context_dispatch (context=context@entry=0xeff7e0) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3663
  [Error: /build/buildd/glib2.0-2.40.0/./glib/gmain.c was not found in source tree]
#16 0x00007f0ec8891048 in g_main_context_iterate (context=0xeff7e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3734
  [Error: /build/buildd/glib2.0-2.40.0/./glib/gmain.c was not found in source tree]
#17 0x00007f0ec889130a in g_main_loop_run (loop=0xf2e320) at /build/buildd/glib2.0-2.40.0/./glib/gmain.c:3928
  [Error: /build/buildd/glib2.0-2.40.0/./glib/gmain.c was not found in source tree]
#18 0x00007f0ec92b4b35 in gtk_main () at /build/buildd/gtk+3.0-3.10.7/./gtk/gtkmain.c:1158
  [Error: /build/buildd/gtk+3.0-3.10.7/./gtk/gtkmain.c was not found in source tree]
#19 0x0000000000403714 in main (argc=1, argv=0x7fffe2e782e8) at main.c:476
  471: 
  472:         if (do_timed_exit) {
  473:                 g_timeout_add_seconds (30, (GSourceFunc) timed_exit_cb, NULL);
  474:         }
  475: 
  476:         gtk_main ();
  477: 
  478:         g_debug ("Shutting down");
  479: 
  480:         if (name_id > 0) {
  481:                 g_bus_unown_name (name_id);