Re: No 3G after disconnecting

[Marius Kotsbak <marius kotsbak gmail com>]

I have also seen that behavior. Remove the auto usb0 entry from network manager. Not sure if it would appear there if the patches were in place first. Hopefully not.

On 27 Jul 2011 15:03, "wp1191918-hgvs" <public van-schelve de> wrote:
>
>  
>
> Marius Kotsbak <marius kotsbak gmail com> hat am 26. Juli 2011 um 12:40
> geschrieben:
>
>> Den 26. juli 2011 12:17, skrev wp1191918-hgvs:
>> >   
>> >
>> > Marius Kotsbak<marius kotsbak gmail com>  hat am 26. Juli 2011 um 02:17
>> > geschrieben:
>> >
>> >
>> >> Den 25. juli 2011 12:08, skrev wp1191918-hgvs:
>> >>>   Hi,
>> >>>   
>> >>> I have found the following problem with an Ericsson F5521gw 3G modem:
>> >>>   
>> >>> 1. start system
>> >>> 2. bring up 3g connection by clicking on the configureation in nm-applet
>> >>> 3. wait until connection is established and can be used
>> >>> 4. disconnect from 3g connection
>> >>> 5. when trying to bring up the connection again it fails
>> >>>
>> >> Seems like I found the cause. See my attached patch to the bug report:
>> >>
>> >> https://bugzilla.gnome.org/show_bug.cgi?id=650740
>> >>
>> >> --
>> >> Marius
>> >   
>> > Hi Marius,
>> >   
>> > looks like with your patch I am no longer able to bring up the 3G connection
>> > on
>> > any time.
>>
>> Strange. I would recommend turning off and on the modem again (if you
>> have a button for that, else turn off and on the laptop). Also make sure
>> there is only one modem-manager running.
>>
>> Anyway, looking at the log it seems like the mbm module is not used at
>> all (so I can't see that my patch made any difference). It uses general
>> ACM PPP dial, not the usb0 ethernet connection. Make sure you have the
>> "cdc_ncm" module.
>>
>> You also need the following patch (included in modemmanager >=0.4.996,
>> but it is just a text file change needed):
>>
>> http://cgit.freedesktop.org/ModemManager/ModemManager/commit/?id=0b757465ffe6108066d32312ab4e895c372c8f72
>>
>> See also https://bugs.launchpad.net/ubuntu/+source/modemmanager/+bug/792301
>>
>  
> So I have patched the /lib/udev/rules.d/77-mm-ericsson-mbm.rules file and
> rebooted my system. Now I have the following devices:
>  
> - Device: usb0  [Auto usb0] ----------------------------------------------------
>   Type:              Wired
>   Driver:            cdc_ncm
>   State:             connected
>   Default:           no
>   HW Address:        02:80:37:EC:02:00
>
>   Capabilities:
>     Carrier Detect:  yes
>
>   Wired Properties
>     Carrier:         on
>
>   IPv4 Settings:
>     Address:         10.33.145.106
>     Prefix:          29 (255.255.255.248)
>     Gateway:         10.33.145.107
>
>     DNS:             10.39.148.253
>     DNS:             10.39.148.249
>  
> - Device: ttyACM0 --------------------------------------------------------------
>   Type:              Mobile Broadband (GSM)
>   Driver:            cdc_acm
>   State:             disconnected
>   Default:           no
>
>   Capabilities:
>
> With nm-applet I can do (dis)connect cycles for the 3G connection. But I need to
> do this on "Ethernet (Lenovo F5521gw)" -> "Auto usb0"
> while "Mobile Broadband" -> "3G-Mobil" does not work but is still shown in
> nm-applet. This will make our user getting confused and so this is not a valid
> workaround for our production.
>  
> So can someone tell me what the main problem is in this case and what has to be
> done to fix it? 
>  
> -- HG