With all updates until today applied, Wengophone seems to work again. So I think it was a problem of Alsa, maybe similar to Bug #162701. As now everything works over pulseaudio, it works.
With all updates until today applied, Wengophone seems to work again. So I think it was a problem of Alsa, maybe similar to Bug #162701. As now everything works over pulseaudio, it works.