stead of ST events.

Thanks to Seth Forshee for providing most of the code, guidance
and insight for producing this patch.

Signed-off-by: George Pantalos <gpantalos@gmail.com>
Acked-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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