Re: nmcli c does not list modem device - part 2

[matti kaasinen <matti kaasinen gmail com>]

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 kaasinen 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