Some more information:
nmcli d
DEVICE TYPE STATE CONNECTION
eth0 ethernet connected eth0
lo loopback unmanaged --
wwan0 wwan unmanaged --
mmcli -m 0
/org/freedesktop/ModemManager1/Modem/0 (device id
'ec133b2df3dde8169aba5cddabc251e62f4601ec')
-------------------------
Hardware | manufacturer: 'huawei'
| model: 'E3131'
| revision: '21.157.14.00.78'
| supported: 'gsm-umts'
| current: 'gsm-umts'
| equipment id: '866715019103353'
-------------------------
System | device:
'/sys/devices/platform/ocp/47400000.usb/47401c00.usb/musb-hdrc.1.auto/usb2/2-1'
| drivers: 'huawei_cdc_ncm, option1'
| plugin: 'Huawei'
| primary port: 'ttyUSB2'
| ports: 'ttyUSB0 (at), ttyUSB2 (at), cdc-wdm0 (at),
wwan0 (net)'
-------------------------
Numbers | own : 'unknown'
-------------------------
Status | lock: 'none'
| unlock retries: 'sim-pin (3), sim-pin2 (3), sim-puk (10),
sim-puk2 (10)'
| state: 'disabled'
| power state: 'on'
| access tech: 'unknown'
| signal quality: '0' (cached)
-------------------------
Modes | supported: 'allowed: 2g, 3g; preferred: none
| allowed: 2g, 3g; preferred: 2g
| allowed: 2g, 3g; preferred: 3g
| allowed: 2g; preferred: none
| allowed: 3g; preferred: none'
| current: 'allowed: 2g, 3g; preferred: 3g'
-------------------------
Bands | supported: 'unknown'
| current: 'unknown'
-------------------------
IP | supported: 'ipv4, ipv6, ipv4v6'
-------------------------
3GPP | imei: '866715019103353'
| enabled locks: 'none'
| operator id: 'unknown'
| operator name: 'unknown'
| subscription: 'unknown'
| registration: 'unknown'
-------------------------
SIM | path: '/org/freedesktop/ModemManager1/SIM/0'
-------------------------
Bearers | paths: 'none'
2016-11-11 15:22 GMT+02:00 matti kaasinen <matti.kaasi...@gmail.com>:
> Hi (again)!
>
> I discussed this problem originally in https://mail.gnome.org/
> archives/networkmanager-list/2016-March/msg00079.html
>
> I had to upgrade my set-up that is currently as follows:
> I am using Huawei 3131 modem whose ID should switch from 14fe to 1506
> Platform is yocto based am335x board running on Linux 4.4, NM version
> 1.0.10, MM version 1.4.12. I have tried to patch MM with commit number
> 359ec84671f9fc0869443b9f0b9555324a0fff78 to fix Huawei AT^NDISDUP problem
> but in fact I do not see any difference to opera the version without
> patching.
>
> I changed from dhclient to internal dhcp client in order to get rid of IP
> address change immediately after boot. That seems working.
>
> ========
> Problems:
> ========
> Modem mode does not change from Mass Storage/SD Storage to Modem.
> However, mode switches quite fine if I run manually command:
> usb_modeswitch -I -W -c /usr/share/usb_modeswitch/12d1\:14fe
> --default-vendor 12d1 --default-product 14fe --target-product 1506
>
> I don't know, if this is something that modemmanager should bring for udev
> to make switching or should it come directly from usb_modeswitch set-up.
> Anyhow, that command uses the usb_modeswitch database.
>
> mmcli -L
> does not see any modems before I run that command and naturally
> nmcli c
> does not see modems, too.
>
> Log shows that huawei driver proceeds fine after I run modeswitch command
> creating ttyUSB terminals. However, when old version produced modem
> (interface type 8) new MM produces generic interface (type 14). NM reports
> regarding this new interface:
> Nov 11 12:55:20 cpr3 NetworkManager[483]: <info> (wwan0): 'wwan' plugin
> not available; creating generic device
> Nov 11 12:55:20 cpr3 NetworkManager[483]: <info> (wwan0): new Generic
> device (carrier: OFF, driver: 'huawei_cdc_ncm', ifindex: 3)
> Nov 11 12:55:20 cpr3 NetworkManager[483]: <info> devices added (path:
> /sys/devices/platform/ocp/47400000.usb/47401c00.usb/
> musb-hdrc.1.auto/usb2/2-1/2-1:1.1/net/wwan0, iface: wwan0)
> Nov 11 12:55:20 cpr3 NetworkManager[483]: <info> device added (path:
> /sys/devices/platform/ocp/47400000.usb/47401c00.usb/
> musb-hdrc.1.auto/usb2/2-1/2-1:1.1/net/wwan0, iface: wwan0): no ifupdown
> configuration found.
>
> Can anyone say how to proceed or is more profound debugging needed or any
> other information?
>
> Thanks,
> Matti
>
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