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Thread: modem zte mf622

  1. #1
    Join Date
    Jul 2009

    modem zte mf622

    Hi everyone, i have a problem with my internet connection on Ubuntu 9.04. I'm using a zte mf622 wireless modem which is recognizable also as an usb storage device as a modem, so my problem is that y have to reboot in order to get my device as an effective modem. On the first boot there is no internet connection available, when i reboot i got them.

    I've tried using usb_modeswitch but it tells me that there is no device connected, after that i execute lsusb and nothing, i also have a scrypt that tells the modem to change itself to the modem configuration added on the //etc/udev directory, but it doesn't work. I can get connected with a modification to the //etc/ppp/options file, by adding "ipcp-max-failure 30" on the space just before the end of the document. I'm guessing that it might be a problem on the usb management of the laptop (i'm using an HP Pavilion dv1000), i don't know if i have to boot with a command line edition from the GRUB or if i have to compile a new kernel...

    Thankfully expecting that you'll find the solution, goodbye.
    Last edited by Cherpas; July 8th, 2009 at 02:19 AM.

  2. #2
    Join Date
    Aug 2008
    Athens Greece
    Ubuntu Mate

    Re: modem zte mf622

    Hi Cherpas, just some ideas:
    usually a laptop when is powered from the AC outlet supplies power to USB port all the time (to charge external peripherals). If this happens at your case, while in mobile use a reboot will power down your modem and power it up again (true h/w reset). If you are using the AC outlet this is possibly different, check it.

    I think that the line you have added ("ipcp-max-failure 30") helps because your provider delays to give you IP and DNS numbers.

    Basic tests you can do is to check before and after reboot/attach of the modem and review the results:
    ls /dev/ttyU*
    Post here any new info to follow up.


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