I just connected my N81 telephone as USB modem to Linux Mint 14. All works fine, just wondering how to find a full path to this device, something like /dev/tty*.

  • take a look at lsusb -v but I'm not sure. – Kiwy Apr 2 '14 at 12:12
  • @Kiwy yeah, there it is: 'Bus 003 Device 013: ID 0421:0007 Nokia Mobile Phones' But no address provided – Kirix Apr 2 '14 at 12:19
  • maybe ls -l /dev/ could allow you to identify the thing if you find the number of nod maybe 3,13 in your case but I can't assure it – Kiwy Apr 2 '14 at 12:21

Probably too late, but it might help others. Wouldn't help you to use mmcli from ModemManager?

$ mmcli -L

Found 1 modems:
    /org/freedesktop/ModemManager1/Modem/4 [Lenovo] H5321 gw

$ mmcli -m 4 

/org/freedesktop/ModemManager1/Modem/4 (device id '34391e5ed3c2b2b7f11d7b36
  Hardware |   manufacturer: 'Lenovo'
           |          model: 'H5321 gw'
           |       revision: 'R3C11'
           |      supported: 'gsm-umts'
           |        current: 'gsm-umts'
           |   equipment id: '358993042510275'
  System   |         device: '/sys/devices/pci0000:00/0000:00:14.0/usb3/3-4'
           |        drivers: 'cdc_acm, cdc_wdm, cdc_ncm'
           |         plugin: 'Ericsson MBM'
           |   primary port: 'cdc-wdm2'
           |          ports: 'cdc-wdm2 (at), wwp0s20u4i6 (net), cdc-wdm1 (at), 
ttyACM1 (at), ttyACM2 (gps), ttyACM0 (at)'
  • 1
    The kernel folks say to remove ModemManager because it causes too many problems. I'm not sure I agree. I think the problem is in the device or the way the device is setup. Also see How to make /dev/ttyACM0 (and friends) exclusive? – user56041 Mar 3 '19 at 20:04
  • 1
    Well, in lists.kernelnewbies.org/pipermail/kernelnewbies/2019-March/… Greg KH just says, that if person handles modem with own peace of code, than it cannot use ModemManager as they're fighting over serial line with each other. That's not a general statement that ModemManager is bad and should be removed. – pevik Mar 4 '19 at 8:04

Solution 1: Run dmesg and watch out for ttyUSB* lines if your modem interface is a classical emulated serial interface.

Solution 2: Browse /sys/bus/usb/devices/X-1:Y:*/ until you find useful information.

Based on your line Bus 003 Device 013: ID 0421:0007 Nokia Mobile Phones, i would guess X=3 and Y= 12 (13 minus one).

Solution 3: Run udevadm monitor as you plug your USB device.

  • How do you translate Bus 003 Device 013: ID 0421:0007 Nokia Mobile Phones to a device like /dev/ttyACM4? – user56041 Mar 3 '19 at 20:01

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.