Re: GSM dongle fails to connect

[Aleksander Morgado <aleksander lanedo com>]

On 08/11/12 16:52, Radu Rendec wrote:
> On Thu, 2012-11-08 at 15:49 +0100, Aleksander Morgado wrote:
>> There are different ways of detecting which port is to be used for
>> control and which for data. In some huawei modems we base the logic on
>> the GETPORTMODE result.
> 
> I see - it's much more complex than I thought :)
> 
>> Just reply with the ModemManager debug log attached, that's ok.
> 
> Ok, I attached 2 sets of log captures. The first set consits of only the
> file 3g-modem-messages.log.gz. It's the first capture, which I made 10
> days ago and it's actually extracted from /var/log/messages - I didn't
> redirect the daemons output to any file.
> 
> The second set of captures is made a few minutes ago and contains
> daemons output redirected to files.
> 
> Please let me know if there's any other information or test that would
> be helpful for debugging.
> 
> Simple crazy idea: maybe the pppd timeout is too low? I noticed it takes
> only 5 seconds of LCP timeouts before the connection is aborted.
> 
> Would it be helpful if I try to install the old Fedora 16 (the
> distribution that used to work with the same 3g modem/sim) on another
> system, test it again and make another set of captures if it works?
> 

Your issue is exactly the one I linked in a previous mail. Your
GETPORTMODE reply says:

 ^GETPORTMODE: TYPE: WCDMA: huawei,NDIS:0,PCUI:1,GPS:2

NDIS is reported but no MDM port. Once MM grabs the ports, it uses the
same for control and data, which is not ok:
  tty/ttyUSB1 primary
  tty/ttyUSB0 secondary
  tty/ttyUSB1 data

If you are able to recompile ModemManager yourself, please try with the
'06-huawei-simple' branch from upstream git.

-- 
Aleksander