diff -Nur SDL2-2.0.7/src/core/linux/SDL_ibus.c SDL2-2.0.7n/src/core/linux/SDL_ibus.c
--- SDL2-2.0.7/src/core/linux/SDL_ibus.c	2017-10-24 03:27:46.000000000 +0800
+++ SDL2-2.0.7n/src/core/linux/SDL_ibus.c	2017-10-26 18:32:46.795026798 +0800
@@ -299,7 +299,7 @@
             caps |= IBUS_CAP_PREEDIT_TEXT;
         }
 
-        SDL_DBus_CallVoidMethod(IBUS_SERVICE, input_ctx_path, IBUS_INPUT_INTERFACE, "SetCapabilities",
+        SDL_DBus_CallVoidMethodOnConnection(ibus_conn, IBUS_SERVICE, input_ctx_path, IBUS_INPUT_INTERFACE, "SetCapabilities",
                                 DBUS_TYPE_UINT32, &caps, DBUS_TYPE_INVALID);
     }
 }
@@ -341,6 +341,7 @@
         dbus->bus_add_match(ibus_conn, "type='signal',interface='org.freedesktop.IBus.InputContext'", NULL);
         dbus->connection_try_register_object_path(ibus_conn, input_ctx_path, &ibus_vtable, dbus, NULL);
         dbus->connection_flush(ibus_conn);
+        result = SDL_TRUE;
     }
 
     SDL_IBus_SetFocus(SDL_GetKeyboardFocus() != NULL);