Sierra Wireless EM7355

Aleksander Morgado aleksander at
Thu Jun 19 10:44:35 PDT 2014

On Thu, Jun 19, 2014 at 7:27 PM, Erinn Looney-Triggs
<erinn.looneytriggs at> wrote:
> Sorry for the delay, I am traveling currently (hence the need for the
> modem) so connections are sporadic.
> This modem is acting pretty erratically to be honest, sometimes it
> appears modemmanager detects it on boot, sometimes not. No particular
> rhyme or reason that I can divine at this point.
> I don't believe anything else is using the device, best way I know to
> check for this is lsof of /dev/cdc-wdm0, and nothing is showing.
> So on this boot the modem doesn't appear to be detected by
> modemmanager, though dmesg shows a listing for it being detected:
> dmesg | grep cdc
> [    3.661711] usbcore: registered new interface driver cdc_ncm
> [    3.663117] usbcore: registered new interface driver cdc_wdm
> [    3.668520] cdc_mbim 3-10:2.12: cdc-wdm0: USB WDM device
> [    3.668686] cdc_mbim 3-10:2.12 wwan0: register 'cdc_mbim' at
> usb-0000:00:14.0-10, CDC MBIM, d6:97:d6:76:77:18
> [    3.668704] usbcore: registered new interface driver cdc_mbim
> sudo mmcli -L
> No modems were found

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