I'm trying to get MM to work with the the Cinterion PLS8-X on Linux 3.14. I've tried using two different methods (ttyACM vs. qmi_wwan) but can't get to the end state of making a data connection and was hoping someone could tell me which way would be best and maybe hint at what I might be doing wrong.
For the first (ttyACM) which seems like the default supported route. When I attach the modem via USB to linux it loads cdc_acm & cdc_ether drivers. I get /dev/ttyACM* devices and can queue modem info without issue via 'mmcli -m 0'. I then try to do 'mmcli -m 0 --simple-connect="apn=broadband"' (correct apn for AT&T) which works and --simple-status shows connected. This is as far as I get. Running udhcpc -i usb0 fails to get an ip address and I'm not really sure why. I also tried using the qmi_wwan route by back-porting the vendor/product id to qmi_wwan and option drivers and adding usb4 to the option driver blacklist. MM comes up and I can queue 'mmcli -m 0' correctly but I get /dev/USB(1)(3)(4)(6)(8) enumerations and no /dev/cdc-wdm which means no wwan... and that's the end of that. Really my goal is just to get a data connection, via command line - no gui or network manager at this point, any idea's on what I can try, something I'm doing wrong or missing?
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