Same problem here but using a Huawei E1556 datacard I fix this problem by downgrading the libwvstreams packages to the versions on «stable»
* libwvstreams4.6-base * libwvstreams4.6-extras -- Aurelio Sanabria acá, el alquiler barato... ¡Viva la colifata! -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
