Re: network manager doesn't find cdc-wdm0


i found the issue: The modemmanager plugin was missing, it can be enabled with "--with-modem-manager-1".

Because the image was built with yocto/bitbake, i had to create a .bbappend file for networkmanager recipe to enable the package feature:

PACKAGECONFIG_append = "modemmanager"

Now the cdc-wdm0 devices shows up:
eth0      ethernet  connected  Wired connection 1
cdc-wdm0  gsm       connected  emnify
can0      can       unmanaged  --
can1      can       unmanaged  --
lo        loopback  unmanaged  --

Mit freundlichen Grüßen / Best regards,
Kevin Kettinger

Am 21.08.2020 um 18:17 schrieb Kevin Kettinger:
It seems some debug output was cut off. In another log i noticed the following:

Loaded device plugin: NM6LowpanDeviceFactory (internal)
Loaded device plugin: NMBondDeviceFactory (internal)
Loaded device plugin: NMBridgeDeviceFactory (internal)
Loaded device plugin: NMDummyDeviceFactory (internal)
Loaded device plugin: NMEthernetDeviceFactory (internal)
Loaded device plugin: NMInfinibandDeviceFactory (internal)
Loaded device plugin: NMIPTunnelDeviceFactory (internal)
Loaded device plugin: NMMacsecDeviceFactory (internal)
Loaded device plugin: NMMacvlanDeviceFactory (internal)
Loaded device plugin: NMPppDeviceFactory (internal)
Loaded device plugin: NMTunDeviceFactory (internal)
Loaded device plugin: NMVethDeviceFactory (internal)
Loaded device plugin: NMVlanDeviceFactory (internal)
Loaded device plugin: NMVxlanDeviceFactory (internal)
Loaded device plugin: NMWireGuardDeviceFactory (internal)
Loaded device plugin: NMWpanDeviceFactory (internal)
Loaded device plugin: NMWifiFactory (/usr/lib/NetworkManager/1.16.0/ Loaded device plugin: NMOvsFactory (/usr/lib/NetworkManager/1.16.0/ Loaded device plugin: NMAtmManager (/usr/lib/NetworkManager/1.16.0/ -----------------------------------------------------------------------------

From another source it seems there should be a device plugin named 'NMWwanFactory', which is missing here. Could this be the reason?

Mit freundlichen Grüßen / Best regards,
Kevin Kettinger

Am 21.08.2020 um 17:59 schrieb Kevin Kettinger:
Hi Antonio,

yes, after installing the system was rebooted.

I've removed the old connection and added the debug config option.
The log consists of the following commands:

root@b2qt-apalis-imx6:~# systemctl restart NetworkManager
root@b2qt-apalis-imx6:~# nmcli c add type gsm ifname ttyUSB2 con-name emnify apn em Connection 'emnify' (86968473-227b-42d1-94ee-6abed0e66870) successfully added.
root@b2qt-apalis-imx6:~# nmcli con up emnify
Error: Connection activation failed: No suitable device found for this connection (device lo not available because device is strictly unmanaged). --------------------------------------------------------------------------------


Mit freundlichen Grüßen / Best regards,
Kevin Kettinger

Am 21.08.2020 um 16:07 schrieb Antonio Cardace:
Hi Kevin,

it might sound as a stupid advice but, have you restarted NetworkManager after
installing ModemManager?

Because if you installed ModemManager and/or NetworkManager-wwan and
you didn't restart it NM won't be able to talk to
ModemManager and will thus not find the cdc-wdm0 device.

If this is not the issue please collect a TRACE-enabled log of
NetworkManager[1] so that we can inspect it.



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