meta-input-settings: Re-apply settings once the display is

done setting up.

Setting tablet mapping mode (and probably other things) fails
at startup because there is no MetaDisplay yet for error handling.

This isn't really a problem in an active session, because current
device states are kept by xserver, but at session start, none of
that state has been set up yet.

Fixes: linuxmint/cinnamon#11231.

src/backends/meta-input-settings-private.h

@@ -152,5 +152,6 @@ gchar *                    meta_input_settings_get_pad_action_label      (MetaIn
 
 void meta_input_settings_maybe_save_numlock_state    (MetaInputSettings *input_settings);
 void meta_input_settings_maybe_restore_numlock_state (MetaInputSettings *input_settings);
+void meta_input_settings_refresh (MetaInputSettings *input_settings);
 
 #endif /* META_INPUT_SETTINGS_PRIVATE_H */

src/backends/meta-input-settings.c

@@ -1952,9 +1952,8 @@ power_save_mode_changed_cb (MetaMonitorManager *manager,
 }
 
 static void
-meta_input_settings_constructed (GObject *object)
+refresh_input_settings (MetaInputSettings *input_settings)
 {
-  MetaInputSettings *input_settings = META_INPUT_SETTINGS (object);
   GSList *devices, *d;
 
   devices = meta_input_settings_get_devices (input_settings, CLUTTER_TOUCHPAD_DEVICE);
@@ -1968,6 +1967,14 @@ meta_input_settings_constructed (GObject *object)
   check_mappable_devices (input_settings);
 }
 
+static void
+meta_input_settings_constructed (GObject *object)
+{
+  MetaInputSettings *input_settings = META_INPUT_SETTINGS (object);
+
+  refresh_input_settings (input_settings);
+}
+
 static void
 meta_input_settings_class_init (MetaInputSettingsClass *klass)
 {
@@ -2740,3 +2747,11 @@ meta_input_settings_maybe_restore_numlock_state (MetaInputSettings *input_settin
   numlock_state = g_settings_get_boolean (priv->keyboard_settings, "numlock-state");
   meta_backend_set_numlock (meta_get_backend (), numlock_state);
 }
+
+void
+meta_input_settings_refresh (MetaInputSettings *input_settings)
+{
+    g_return_if_fail (META_IS_INPUT_SETTINGS (input_settings));
+
+    refresh_input_settings (input_settings);
+}

src/core/display.c

@@ -985,6 +985,8 @@ meta_display_open (void)
 
   display->sound_player = g_object_new (META_TYPE_SOUND_PLAYER, NULL);
 
+  meta_input_settings_refresh (meta_backend_get_input_settings (backend));
+
   /* Done opening new display */
   display->display_opening = FALSE;