GNOME.org
 

Re: Network Manager does not work

Hi Mr. Walker,

Finally ! I meet someone who is facing the same problem as I am. Lucky for me but unlucky for you ! Hmmm, I have no idea either. Even the guys who work with this stuff don't have good clues ... I don't know, if someone can tell me if I can get this to work without the NetworkManager with the traditional ifup/down commands ... but I am such a newbie ... :(

and the strange thing ! some how it used to work on it's own !!! :P

On Sun, Apr 17, 2011 at 9:10 AM, Francis Walker <francis3366 gmail com> wrote:
No Wireless Connection

I have the same problem as Junaid Naseer.    My laptop and desktop are running Linux, Ubuntu 8.04 cannot connect to the internet wirelessly.    Network Manager used to detect the wireless networks around me (six) and now neither computer recognizes them or my own router.  I know the Wireless system is working as I have friends who have come into my home with their WIndows machines and the wireless transmissions work fine.   I have reinstalled the operating system twice and Network Manager a number of times on both computers in an attempt to get the system to work, but no luck.  I tried a number of fixes over the months and finally gave up.  It is a nuisance when I travel as my laptop is almost useless when I attempt to use the internet.   I have to locate a cybercafe or library to pay bills or check my email and usually must use their computers. However, I have no problem connecting to the internet via an Ethernet cable on both computers.  If I am lucky, the library or cybercafe has an Ethernet connection I can plug into my laptop.

Any suggestions?

Francis Walker

To: networkmanager-list gnome org
Subject: no wireless networks detected
Message-ID: <1302972839.17768.2.camel@
linux-junaid>
Content-Type: text/plain; charset="utf-8"

Hi,

My networkmanager is not automatically detecting the dozen or so
wireless networks surrounding me, even though it used to do so earlier,
until i had to reninstall the system from scratch. All drivers etc are
installed and all versions of the OS and network manager are the same.
Earlier it used to work. Now it doesn't.


On Sat, Apr 16, 2011 at 10:30 PM, <networkmanager-list-request gnome org> wrote:
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Today's Topics:

  1. Modem-/NetworkManager support for modems not using PPP
     (Marius Kotsbak)
  2. no wireless networks detected (Junaid Naseer)
  3. Re: no wireless networks detected (Timothy Murphy)
  4. How nm-applet and gnome-bluetooth interact to create a
     bluetooth connection? (Lamarque Vieira Souza)
  5. Q: nm-gsm-device.c (ran shalit)
  6. Re: Q: nm-gsm-device.c (Lamarque Vieira Souza)


----------------------------------------------------------------------

Message: 1
Date: Sat, 16 Apr 2011 14:57:49 +0200
From: Marius Kotsbak <marius kotsbak gmail com>
To: networkmanager-list gnome org
Cc: mbm-devel lists sourceforge net
Subject: Modem-/NetworkManager support for modems not using PPP
Message-ID: <4DA9924D 9080108 gmail com>
Content-Type: text/plain; charset=ISO-8859-1

Hi!

There seems to be now quite a bit of modems appearing now that does not
support the old method of using PPP protocol on the same tty device as
the AT commands are sent, or it is not recommended for higher HSPA+ and
LTE modems because of performance limitations of the PPP/tty layer.
Those devices typically accept AT commands at one interface and use
another interface for the network traffic (including first a DHCP query).

One example is the Samsung GT-B3730 I'm currently developing drivers for:

https://github.com/mkotsbak/Samsung-GT-B3730-linux-driver

It seems to be the same case for LG VL600 4G (LTE):

http://ubuntuforums.org/showpost.php?p=10589647&postcount=17

https://github.com/balrog-kun/LG-VL600-utils

The Ericsson Mobile Broadband Modules (I have an F5521gw based modem)
seems to offer both the old ACM ports and support USB WCM / CDC NCM /
CDC Ethernet protocols for higher performance:

http://www.thinkwiki.org/wiki/Ericsson_F3507g_Mobile_Broadband_Module#Connecting_to_the_net_via_CDC_Ethernet_interface

http://sourceforge.net/apps/mediawiki/mbm/index.php?title=MBM#Prerequisites

http://cateee.net/lkddb/web-lkddb/USB_NET_CDC_NCM.html

I wonder if support for this has been implemented or thought about in
Modem-/NetworkManager. We probably need a flag for a modem manager
module to tell that it does not use PPP and require to get IP address
using DHCP instead.

Else those devices benefit from the code in modem manager (and should be
classified as such to the user as well), like the PIN unlocking, signal
strength (typically found on the same device as dialling happened, since
network traffic flow on a separate interface)  etc. The configuration
tab for PPP could be hidden for those devices. For devices offering
multiple ways to connect, the modem manager module should probably find
the best performing according to the available kernel modules and use
that method.

--
Marius Kotsbak




------------------------------

Message: 2
Date: Sat, 16 Apr 2011 18:53:59 +0200
From: Junaid Naseer <junaidnaseer gmail com>
To: networkmanager-list gnome org
Subject: no wireless networks detected
Message-ID: <1302972839.17768.2.camel@linux-junaid>
Content-Type: text/plain; charset="utf-8"

Hi,

My networkmanager is not automatically detecting the dozen or so
wireless networks surrounding me, even though it used to do so earlier,
until i had to reninstall the system from scratch. All drivers etc are
installed and all versions of the OS and network manager are the same.
Earlier it used to work. Now it doesn't.


Best Regards,
Junaid Naseer

MS Digital Communications
Technische Fakult?t, CAU Kiel,
Schleswig-Holstein, Germany

junaidnaseer gmail com
jnas tf uni-kiel de
junaid naseer stu uni-kiel de

+49 ( 0176 ) 564 560 71
+49 ( 0431 ) 219 08 79
**************************************

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Message: 3
Date: Sat, 16 Apr 2011 23:30:55 +0100
From: Timothy Murphy <gayleard eircom net>
To: networkmanager-list gnome org
Subject: Re: no wireless networks detected
Message-ID: <iod5av$8ni$1 dough gmane org>
Content-Type: text/plain; charset="ISO-8859-1"

Junaid Naseer wrote:

> My networkmanager is not automatically detecting the dozen or so
> wireless networks surrounding me, even though it used to do so earlier,
> until i had to reninstall the system from scratch. All drivers etc are
> installed and all versions of the OS and network manager are the same.
> Earlier it used to work. Now it doesn't.

I've found NM often says "No wireless networks detected"
even when it is actually connected to one.

--
Timothy Murphy
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland



------------------------------

Message: 4
Date: Sat, 16 Apr 2011 20:15:47 -0300
From: Lamarque Vieira Souza <lamarque gmail com>
To: networkmanager-list gnome org
Subject: How nm-applet and gnome-bluetooth interact to create a
       bluetooth       connection?
Message-ID: <201104162015 47710 lamarque gmail com>
Content-Type: text/plain; charset="us-ascii"

       Hi all,

       Alex Fiestas and me are trying to implement Bluetooth DUN support for
KDE. We spent some time trying to figure out the steps nm-applet and gnome-
bluetooth do to implement it but without much success. Can someone help us?

       During my tests I hit this part of NM code in src/nm-manager.c:

       /* If it was a Bluetooth modem and no bluetooth device claimed it, ignore
        * it.  The rfcomm port (and thus the modem) gets created automatically
        * by the Bluetooth code during the connection process.
        */
       if (driver && !strcmp (driver, "bluetooth")) {
               nm_log_info (LOGD_MB, "ignoring modem '%s' (no associated Bluetooth
device)", ip_iface);
               return;
       }

       Commenting the "return" allows me to use my cellphone as bluetooth serial
modem (after creating /dev/rfcomm0 using BlueZ), but of course I guess that
code is there for a reason. I still do not understand how gnome-bluetooth (or
nm-applet) creates the rfcomm port. I know that can be done using BlueZ's DBus
interface by calling the org.bluez.Serial.Connect method on a bluetooth
device. But since NM is explicitly ignoring the rfcomm port, how are NM's
bluetooth connections supposed to work?

--
Lamarque V. Souza
http://www.geographicguide.com/brazil.htm
Linux User #57137 - http://counter.li.org/
http://planetkde.org/pt-br
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Message: 5
Date: Sat, 16 Apr 2011 22:22:29 -0700 (PDT)
From: ran shalit <ranshalit gmail com>
To: NetworkManager-list gnome org
Subject: Q: nm-gsm-device.c
Message-ID: <31416196 post talk nabble com>
Content-Type: text/plain; charset=us-ascii


Hello,

I am a newbie student of the NetworkManager, and I try to undetsrand the way
the application treats with modem & wifi devices (more ineterseted in the
low level parts of the NetworkManager application: the "commands" to the
devices).
I saw that in the older released version such as 0.7.2 there was a file
/src/nm-gsm-device.c which contained some of the AT-COMMAND used for
initialization of modems, but in the updated version there is no such
file(as far as I can find), and I dont see anywhere else where AT-Command
are used. Does anyone knows how these commands are used then in the updated
version ?

Many thanks,
Ran

--
View this message in context: http://old.nabble.com/Q%3A-nm-gsm-device.c-tp31416196p31416196.html
Sent from the Gnome - NetworkManager mailing list archive at Nabble.com.



------------------------------

Message: 6
Date: Sun, 17 Apr 2011 02:30:34 -0300
From: Lamarque Vieira Souza <lamarque gmail com>
To: networkmanager-list gnome org
Subject: Re: Q: nm-gsm-device.c
Message-ID: <201104170230 35057 lamarque gmail com>
Content-Type: text/plain; charset="iso-8859-1"

Em Sunday 17 April 2011, ran shalit escreveu:
> Hello,
>
> I am a newbie student of the NetworkManager, and I try to undetsrand the
> way the application treats with modem & wifi devices (more ineterseted in
> the low level parts of the NetworkManager application: the "commands" to
> the devices).
> I saw that in the older released version such as 0.7.2 there was a file
> /src/nm-gsm-device.c which contained some of the AT-COMMAND used for
> initialization of modems, but in the updated version there is no such
> file(as far as I can find), and I dont see anywhere else where AT-Command
> are used. Does anyone knows how these commands are used then in the updated
> version ?

       NetworkManager >= 0.8 uses ModemManager for low level configuration such
as AT commands.

--
Lamarque V. Souza
http://www.geographicguide.com/brazil.htm
Linux User #57137 - http://counter.li.org/
http://planetkde.org/pt-br
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--

Best Regards,
Junaid Naseer

MS Digital Communications
Technische Fakultät, CAU Kiel,
Schleswig-Holstein, Germany

junaidnaseer gmail com
jnas tf uni-kiel de
junaid naseer stu uni-kiel de

+49 ( 0176 ) 564 560 71
+49 ( 0431 ) 219 08 79



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