#0  0x00007fe020c30cfe in idle_set_mode (manager=manager@entry=0x5617bcd84430, mode=mode@entry=GSD_POWER_IDLE_MODE_BLANK) at gsd-power-manager.c:2413
  2408:                 /* only toggle keyboard if present and not already toggled */
  2409:                 if (manager->priv->upower_kdb_proxy &&
  2410:                     manager->priv->kbd_brightness_old == -1) {
  2411:                         ret = upower_kbd_toggle (manager, &error);
  2412:                         if (!ret) {
  2413:                                 g_warning ("failed to turn the kbd backlight off: %s",
  2414:                                            error->message);
  2415:                                 g_error_free (error);
  2416:                         }
  2417:                 }
  2418: 
#1  0x00007fe020c33280 in handle_screensaver_active (parameters=0x7fe01001f100, manager=0x5617bcd84430) at gsd-power-manager.c:2789
  2784:                 /* Setup blank as soon as the screensaver comes on,
  2785:                  * and its fade has finished.
  2786:                  *
  2787:                  * See also idle_configure() */
  2788:                 if (active)
  2789:                         idle_set_mode (manager, GSD_POWER_IDLE_MODE_BLANK);
  2790:         }
  2791: }
  2792: 
  2793: static void
  2794: screensaver_signal_cb (GDBusProxy *proxy,
#2  screensaver_signal_cb (proxy=<optimized out>, sender_name=<optimized out>, signal_name=<optimized out>, parameters=0x7fe01001f100, user_data=<optimized out>) at gsd-power-manager.c:2801
  2796:                        const gchar *signal_name,
  2797:                        GVariant *parameters,
  2798:                        gpointer user_data)
  2799: {
  2800:         if (g_strcmp0 (signal_name, "ActiveChanged") == 0)
  2801:                 handle_screensaver_active (GSD_POWER_MANAGER (user_data), parameters);
  2802: }
  2803: 
  2804: static void
  2805: power_keyboard_proxy_ready_cb (GObject             *source_object,
  2806:                                GAsyncResult        *res,
#3  0x00007fe0295d0e40 in ffi_call_unix64 () from /tmp/apport_sandbox_3X0Xzm/usr/lib/x86_64-linux-gnu/libffi.so.6
#4  0x00007fe0295d08ab in ffi_call () from /tmp/apport_sandbox_3X0Xzm/usr/lib/x86_64-linux-gnu/libffi.so.6
#5  0x00007fe02d1c27c9 in g_cclosure_marshal_generic () from /tmp/apport_sandbox_3X0Xzm/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#6  0x00007fe02d1c1fa5 in g_closure_invoke () from /tmp/apport_sandbox_3X0Xzm/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7  0x00007fe02d1d3fc1 in signal_emit_unlocked_R () from /tmp/apport_sandbox_3X0Xzm/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8  0x00007fe02d1dcd5c in g_signal_emit_valist () from /tmp/apport_sandbox_3X0Xzm/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9  0x00007fe02d1dd08f in g_signal_emit () from /tmp/apport_sandbox_3X0Xzm/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007fe02d4e60fc in on_signal_received () from /tmp/apport_sandbox_3X0Xzm/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#11 0x00007fe02d4d5964 in emit_signal_instance_in_idle_cb () from /tmp/apport_sandbox_3X0Xzm/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#12 0x00007fe02ceeb05a in g_main_context_dispatch () from /tmp/apport_sandbox_3X0Xzm/lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007fe02ceeb400 in g_main_context_iterate.isra () from /tmp/apport_sandbox_3X0Xzm/lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007fe02ceeb722 in g_main_loop_run () from /tmp/apport_sandbox_3X0Xzm/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fe02d99e6f5 in gtk_main () at /build/gtk+3.0-lL7YRg/gtk+3.0-3.18.9/./gtk/gtkmain.c:1241
  [Error: gtkmain.c was not found in source tree]
#16 0x00005617bc14a5eb in main (argc=1, argv=0x7ffe69529608) at main.c:483
  478:                 g_timeout_add_seconds (30, (GSourceFunc) timed_exit_cb, NULL);
  479:         }
  480:      
  481:         gsd_idle_monitor_init_dbus (replace);
  482: 
  483:         gtk_main ();
  484: 
  485:         g_debug ("Shutting down");
  486: 
  487:         if (name_id > 0) {
  488:                 g_bus_unown_name (name_id);