[3G] NetworkManager does not detect ZTE AC8710 CDMA/EVDO 3G USB Modem

Can you please provide the output of:

lsusb

Thanks

Please check out this bugreport:

https://bugs.launchpad.net/ubuntu/+source/modemmanager/+bug/384344

I too have this same issues.

In karmic had to give "sudo restart network-manager" after plugging the device and wait for some time before being able to use with NM.

Shiva

Below are the steps to use any USB data card on Ubuntu 8.04 Hardy Heron. I have tried these steps with my Reliance NetConnect ZTE MG880 USB modem. But I think this will work on all the USB modems.

1) Mount the USB modem. In most cases we need to manually mount the device.

COMMAND: "sudo mount -t usbfs usbdevfs /proc/bus/usb"

Note: we can also use "None" option instead of "usbdevfs"

2) Check whether the card is recognized by the kernel

COMMAND: "sudo cat /proc/bus/usb/devices"

You will see bunch of messages. But we need only the data at the end. It looks something like this.

[...]
T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 19 Spd=12 MxCh= 0
D: Ver= 1.01 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=16 #Cfgs= 1
P: Vendor=19d2 ProdID=fffd Rev= 0.00
S: Manufacturer=ZTE, Incorporated
S: Product=ZTE CDMA Tech
[...]

Pen down the "Vendor" and "ProdID"
For Pramod it is
Vendor=19d2 ProdID=fff5 Rev= 0.00

3) Now modprobe the driver
sudo modprobe usbserial vendor=19d2 product=fff5
COMMAND: "sudo modprobe usbserial vendor=19d2 product=fff5"

Values of "Vendor" and "Product" can be obtained from the response for the command in step 2. For ZTE MG880 "vendor= 0x19D2" and "product = 0xFFD".

4) Give the command "dmesg"

COMMAND: "sudo dmesg"

The response will look something like this;

[38360.764000] usbcore: registered new interface driver usbserial
[38360.764000] drivers/usb/serial/usb-serial.c: USB Serial support registered for generic
[38360.940000] usbserial_generic 2-1:1.0: generic converter detected
[38360.940000] usb 2-1: generic converter now attached to ttyUSB0
[38360.940000] usbserial_generic 2-1:1.1: generic converter detected
[38360.940000] usb 2-1: generic converter now attached to ttyUSB1
[38360.940000] usbserial_generic 2-1:1.2: generic converter detected
[38360.940000] usb 2-1: generic converter now attached to ttyUSB2
[38360.940000] usbcore: registered new interface driver usbserial_generic
[38360.940000] drivers/usb/serial/usb-serial.c: USB Serial Driver core

5) Now edit the wvdial.conf file

COMMAND: "sudo vi /etc/wvdial.conf"

[Dialer zte]
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Modem Type = Analog Modem
Phone = #777
Username = xxxxxxxxxxxxx
Password = xxxxxxxxxxxxx
ISDN = 0
SetVolume = 0
FlowControl = Hardware (CRTSCTS)
Modem = /dev/ttyUSB0
Dial Command = ATDT
Baud = 460800
Stupid Mode = 1

Note: You need to enter all the data as described above.

6) Run the "wvdial"

COMMAND: "sudo wvdial Zte"

--> WvDial: Internet dialer version 1.56
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Modem initialized.
--> Sending: ATDT#777
--> Waiting for carrier.
ATDT#777
CONNECT 230400
--> Carrier detected. Starting PPP immediately.
--> Starting pppd at Sat Mar 3 22:55:20 2007
--> Pid of pppd: 24314
--> Using interface ppp0
--> local IP address 220.226.50.126
--> remote IP address 97.239.2.10
--> primary DNS address 202.138.103.100
--> secondary DNS address 202.138.96.2

Now you are connected to internet.

7) To disconnect just press "Ctrl+c" key.

When I use the wvdial in my embedded device, error is as below

# sudo wvdial
--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
wvdial: utils/wvtask.cc:198: WvTaskMan::WvTaskMan(): Assertion `getcontext(&get.
Aborted

I do apt-get install libc6-dev, which is still not userful.

But If I do the same procedure in the Desktop Ubuntu 9.10
$ sudo wvdial
--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: ATZ
ATZ
OK
--> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
--> Modem initialized.
--> Sending: ATDT#777
--> Waiting for carrier.
ATDT#777
CONNECT
--> Carrier detected. Waiting for prompt.
--> Don't know what to do! Starting pppd and hoping for the best.
--> Starting pppd at Tue May 25 10:35:12 2010
--> Pid of pppd: 3598
--> Using interface ppp0
--> pppd: (�s[08]@�s[08]
--> pppd: (�s[08]@�s[08]
--> pppd: (�s[08]@�s[08]
--> pppd: (�s[08]@�s[08]
--> local IP address 75.208.166.141
--> pppd: (�s[08]@�s[08]
--> remote IP address 66.174.216.64
--> pppd: (�s[08]@�s[08]
--> primary DNS address 66.174.92.14
--> pppd: (�s[08]@�s[08]
--> secondary DNS address 69.78.96.14
--> pppd: (�s[08]@�s[08]

I don't know which library I have missing? Thanks