Re: Huawei e160g 3G usb modem trouble [solved?]

[Anders Bo <abn andersbonielsen dk>]

Hi, 
I can confirm this problem and its apparent solution. I have the same modem
and the same provider.
I have been using Gnome PPP without problems, but NetworkManager kept
breaking. I have been debugging for a few days, made a similar USB trace (on
XP) and suspected wrong AT commands in NetworkManager. Apparently, this has
now been proved. I have edited nm-gsm-device.c as suggested by Jacob and
recompiled. It works. (Unfortunately, it seems a bit unstable, but that may
be since I used version 0.7~~svn20081018t105859-0ubuntuu2-nm4).

Best regards, Anders Bo


spammed wrote:
> 
> Filed a bug report:
> 
> http://bugzilla.gnome.org/show_bug.cgi?id=565177
> 
> Anything I can do to help, let me know...
> 
> Best Regards,
> Jacob Nielsen
> 
> On Fri, 2008-12-19 at 14:19 +0100, spammed wrote:
> 
>> Hi,
>> 
>> I got this 3G modem after 'verifying' that it would work with
>> networkmanager on Ubuntu 8.10:
>> 
>> http://forums.whirlpool.net.au/forum-replies.cfm?t=1046813&r=17127620#r17127620
>> http://tensixtyone.com/perma/howto-debian-lenny-huawei-e160g#comment-267 
>> 
>> However it did not work with my provider OiSTER.dk - when attempting
>> to connect it would fail like this:
>> 
>> NetworkManager: <info>  Searching for a network...
>> NetworkManager: <debug> [1228941447.278901] nm_serial_debug():
>> Sending: 'AT+CREG?'
>> NetworkManager: <debug> [1228941447.288917] nm_serial_debug(): Got:
>> '+CREG: 0,2
>> OK'
>> NetworkManager: <info>  Searching for a network...
>> NetworkManager: <debug> [1228941447.791863] nm_serial_debug():
>> Sending: 'AT+CREG?'
>> NetworkManager: <debug> [1228941447.802718] nm_serial_debug(): Got:
>> '+CREG: 0,3
>> OK'
>> NetworkManager: <WARN>  automatic_registration_response(): Automatic
>> registration failed: registration denied.
>> 
>> I extracted AT commands from a WinXP USB trace, which showed that
>> while the CREG command would report "registration denied" the GPRS
>> command CGREG would report connection status as expected.
>> The GSM 07.07 section on the CGREG command has the following note:
>> 
>> "NOTE. If the GPRS MT also supports circuit mode services, the +CREG
>> command and +CREG: result code apply to the registration status and
>> location information for those services."
>> 
>> So apparently GPRS registration succeeds while registration for
>> circuit mode services fails. Can this be provider dependent?
>> (Oister.dk provides a local data-only service.) Or maybe it is just a
>> modem firmware bug?
>> 
>> Since the commands are so similar, I changed CREG to CGREG in the
>> sources (specifically nm-gsm-device.c) as an experiment - and now it
>> just works...
>> You should of course draw your own conclusions from this, but
>> apparently there are cases where checking the CREG status is not
>> enough. 
>> 
>> Best regards,
>> Jacob Nielsen 
>> 
>> Attached: WinXP USB trace and AT commands, nm-serial log, system info,
>> patch.
>> 
>> 
>> 
>> _______________________________________________
>> NetworkManager-list mailing list
>> NetworkManager-list gnome org
>> http://mail.gnome.org/mailman/listinfo/networkmanager-list
> 
> _______________________________________________
> NetworkManager-list mailing list
> NetworkManager-list gnome org
> http://mail.gnome.org/mailman/listinfo/networkmanager-list
> 
> 

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