Need help USB modem

[Doug Kuvaas]

On Fri, Mar 2, 2012 at 4:49 PM, Roger <arelem at bigpond.com> wrote:

> On 03/03/12 00:21, Antonio Olivares wrote:
>
>>
>> --- On Fri, 3/2/12, Roger<arelem at bigpond.com>  wrote:
>>
>>  From: Roger<arelem at bigpond.com>
>>> Subject: Re: Need help USB modem
>>> To: users at lists.fedoraproject.org
>>> Date: Friday, March 2, 2012, 4:17 AM
>>> I have the laptop here at home for
>>> the weekend and still have trouble getting the Sierra
>>> aircard 312U modem to work.
>>>
>>> Following instruction on the Sierra site: http://www.sierrawireless.com/
>>> **Support/SupportCenter.aspx<http://www.sierrawireless.com/Support/SupportCenter.aspx>
>>>
>>> -Have installed the kernel module provided by Sierra for the
>>> latest kernel.
>>> -modinfo sierra shows the correct version
>>>
>>> -modinfo-sierra_net shows that ist's installed in
>>> /lib/modules/x/x/x/x/x/x/**sierra_net.ko
>>>
>>> -ls /dev/ttyUSB* shows /dev/ttyUSB0 to3
>>>
>>> ifconfig does not show the usb,
>>> it only has etho, lo and wlan0 so now I'm stuck as to where
>>> to go from here.
>>>
>>> Can someone please advise
>>> thanks in advance
>>> Roger
>>>
>>>
>>>
>>>
>>> -- users mailing list
>>>
>> As a root user,
>> $ su -
>> passwd:
>>
>> do the following:
>>
>> # wvdialconf /etc/wvdial.conf
>>
>> it will scan for modem port, and hopefully it finds /dev/ttyUSB0 or your
>> true modem port.  Edit the file /etc/wvdial.conf as root user and add your
>> username, password and ISP phone number(Your isp that you use to connect),
>> then add a line "Carrier Check = no", "Stupid Mode = yes" to the
>> /etc/wvdial.conf file and save it.  Then, as root user do
>>
>> # wvdial
>>
>> and it should attempt to connect to the internet with that information
>> that you have input into the wvdial.conf file.  If all is well you should
>> see something like CONNECTED and some numbers (nameservers ) add these
>> numbers to /etc/resolv.conf and you should happily browse with your shiny
>> new USB modem.  Hope this helps.
>>
>
> Thanks Antonio and Rick
> This is where I got to last night and this morning.
> Have tried in both Fedora 16 and Ubuntu oneric. Ubuntu is on the student's
> laptop.
>
> sudo wvdial reports:
>
> --> WvDial: Internet dialer version 1.61
> --> Cannot get information for serial port.
> --> Initializing modem.
> --> Sending: AT+CGDCONT=1, "IP", "telstra.internet"
> OK
> --> Modem initialized.
> --> Sending: ATDT*99#
> --> Waiting for carrier.
> CONNECT 21000000
> --> Carrier detected.  Starting PPP immediately.
> --> Starting pppd at Sat Mar  3 09:21:43 2012
> --> Pid of pppd: 1965
> --> Using interface ppp0
> --> Disconnecting at Sat Mar  3 09:21:45 2012
> --> The PPP daemon has died: A modem hung up the phone (exit code = 16)
> --> man pppd explains pppd error codes in more detail.
> --> Try again and look into /var/log/messages and the wvdial and pppd man
> pages for more information.
> --> Auto Reconnect will be attempted in 5 seconds
> --> Cannot get information for serial port.
> --> Initializing modem.
> --> Sending: AT+CGDCONT=1, "IP", "telstra.internet"
> OK
> --> Modem initialized.
>
> It then repeats the above a number of times.
>
> ^CCaught signal 2:  Attempting to exit gracefully...
> --> Disconnecting at Sat Mar  3 09:21:49 2012
>
> I have tried both telstra.bigpond and telstra.internet, makes no
> difference.
>
>
> Roger
>
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>

It sounds like you are making some progress at least.  I came across this
while looking for more information:

http://us.generation-nt.com/answer/sierra-aircard-312u-not-connecting-help-203152682.html

Which basically says that the usb device address is incorrect and needs to
be changed.

Try using different USB device files in
/etc/sysconfig/network-scripts/ifcfg-ppp0

The line of interest is MODEMPORT=/dev/ttyUSB3

See if maybe ttyUSB0, ttyUSB1, or ttyUSB2 work instead (provided it is
using ttyUSB3).
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