Huawei E160E USB modem fails to connect with ModemManager-1.0.0 and NetworkManager-

Aleksander Morgado aleksander at
Mon Nov 4 10:13:38 CET 2013

On 03/11/13 06:27, David Allen wrote:
> Hi,
> I have a Huawei E160E USB modem that works with ModemManager- and
> NetworkManager-
>  but does not work with ModemManager-1.0.0 and NetworkManager- The
> modem appears to be initialised but disconnects when a connection to my
> ISP is
> attempted.
> There is also a confirmatory report of this issue here.
> I note that when this device works, a ppp0 interface is created, but
> when the
> device does not work, a wwan0 interface is created.
> Please find attached:
> Debug logs- (Recorded on a Slackware 14.1-RC3 32bit installation)
>  dump_working.txt and syslog_working.txt - Recorded with earlier versions
>  dump_not_working.txt and syslog_not_working.txt - Recorded with later
> versions
> Device details-
>  modeminfo.txt - Excerpt from output of usb-devices
>  mmcli_output.txt - Output from mmcli with ModemManager-1.0.0 installed
>  qmicli1.txt - Output from 'qmicli -d /dev/cdc-wdm0
> --device-open-version-info --dms-get-ids -v'
>                      with ModemManager-1.0.0 installed
>  qmicli2.txt - Output from 'qmicli -d /dev/cdc-wdm0 --dms-get-ids -v'
>                      with ModemManager-1.0.0 installed
>                     (Perhaps the error without the 
> '--device-open-version-info' option is relevant)
> Screenshots-
>  E160E_01.png and E160E_02.png - Showing results of querying this device
> with AT commands

Could you get ModemManager debug logs?

MM 1.0 is using the QMI support in the modem; not AT+PPP. We need to
understand where and why it fails.


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