<html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body text="#663300" bgcolor="#FFFFFF"> I'm trying to get a u-blox LARA-R280 device working with my embedded linux build -- using Linux kernel 4.4.0 (armhf) and Debian Buster (testing). <ul> <li>ModemManagerv 1.10.0</li> <li>NetworkManager 1.14.6 </li> </ul> ModemManager discovers the device ok, but NetworkManger does not see a network device (e.g. `cdc-wdm0` which is what I get with a Quectel modem). <tt># mmcli -L</tt><tt> </tt><tt> /org/freedesktop/ModemManager1/Modem/0 [u-blox] LARA-R280</tt> <tt># mmcli -m 0</tt><tt> </tt><tt> --------------------------------</tt><tt> </tt><tt> General | dbus path: /org/freedesktop/ModemManager1/Modem/0</tt><tt> </tt><tt> | device id: cefae5a09feceda70ab244f864cd3239d518b487</tt><tt> </tt><tt> --------------------------------</tt><tt> </tt><tt> Hardware | manufacturer: u-blox</tt><tt> </tt><tt> | model: LARA-R280</tt><tt> </tt><tt> | revision: 30.43</tt><tt> </tt><tt> | supported: gsm-umts, lte</tt><tt> </tt><tt> | current: gsm-umts, lte</tt><tt> </tt><tt> | equipment id: 357364080026759</tt><tt> </tt><tt> --------------------------------</tt><tt> </tt><tt> System | device: /sys/devices/soc0/amba/e0002000.usb/ci_hdrc.0/usb1/1-1</tt><tt> </tt><tt> | drivers: cdc_acm</tt><tt> </tt><tt> | plugin: u-blox</tt><tt> </tt><tt> | primary port: ttyACM0</tt><tt> </tt><tt> | ports: ttyACM3 (unknown), ttyACM4 (unknown), ttyACM5 (unknown), </tt><tt> </tt><tt> | ttyACM0 (at), ttyACM1 (at), ttyACM2 (at)</tt><tt> </tt><tt> --------------------------------</tt><tt> </tt><tt> Status | unlock retries: sim-pin (3), sim-pin2 (3), sim-puk (10), sim-puk2 (10)</tt><tt> </tt><tt> | state: registered</tt><tt> </tt><tt> | power state: on</tt><tt> </tt><tt> | access tech: lte</tt><tt> </tt><tt> | signal quality: 60% (recent)</tt><tt> </tt><tt> --------------------------------</tt> <tt># nmcli d</tt><tt> </tt><tt>DEVICE TYPE STATE CONNECTION </tt><tt> </tt><tt>eth0 ethernet connected wired-connection-1 </tt><tt> </tt><tt>ttyACM0 gsm disconnected -- </tt><tt> </tt><tt>sit0 iptunnel unmanaged -- </tt><tt> </tt><tt>tunl0 iptunnel unmanaged -- </tt><tt> </tt><tt>lo loopback unmanaged -- </tt><tt> </tt> `nmcli` shows a `ttyACM0` serial device (instead of the network interface device). I'm expecting something like `cdc-wdm0`. Is that a correct assumption? I hand to Monkey patch my kernel to work with the Quectel device (following documents from Quetel), but I can't find any information from u-blox about kernel driver requirements (other than the device works with standard linux drivers). Any ideas what drivers I need configured/enabled/patched to get the LARA-R2 module to enumerate as a network device? Thanks, Brendan. </body> </html>