Reverting the huawei rework patch seemed to have the bug fixed or at least minimized. The proper fix is already in the MM_06 and git master branches, but it cannot/shouldn't be backported to MM_05, as it is quite a change. A hardcore workaround would be to force the huawei plugin to grab only the primary AT port, no secondary. I do not have such a modem, so if anyone wants to try that... patches welcome :-)
Reverting the huawei rework patch seemed to have the bug fixed or at least minimized. The proper fix is already in the MM_06 and git master branches, but it cannot/shouldn't be backported to MM_05, as it is quite a change. A hardcore workaround would be to force the huawei plugin to grab only the primary AT port, no secondary. I do not have such a modem, so if anyone wants to try that... patches welcome :-)