Currently at least two methods are used, resulting in two different dialogs: * https://gitlab.xfce.org/xfce/xfce4-power-manager/-/blob/f6d5a34fa8a9c1125fc74f7bfb177bf78657add2/src/xfpm-manager.c#L323 * https://gitlab.xfce.org/xfce/xfce4-power-manager/-/blob/f6d5a34fa8a9c1125fc74f7bfb177bf78657add2/src/xfpm-power.c#L576 There should probably be only one. Furthermore, in view of https://gitlab.xfce.org/xfce/xfce4-session/-/issues/97 or #164, it seems preferable to use a dialog specific to xfce4-power-manager, instead of or before invoking the xfce4-session dialog.