Public bug reported:
I have an internal sierra 3g modem in my dell laptop
Manufacturer: Sierra Wireless, Inc.
Model: MC8790
Revision: K1_0_2_18AP C:/WS/FW/K1_0_2_18AP/MSM6290/SRC 2008/12/29 14:49:54
The network manager correctly detects the modem and seems to initialize it. but
when I try to connect it gives up saying "NO CARRIER".
I tried with wvdial, and the modem works like a charm, so I tried to
track down where the problem is. Probably there is some AT command
missing somewere but without luck. The mess of layers between network-
manager, udev, modem-manager screwed me up, also because modem-manager
is completely undocumented and seems to don't have any configuration
file. Also, I could not find anywhere how to manually set options in the
system connections for network manager.
But triying to debug the situation I discovered that opening a minicom
session to the modem command port and simply entering a reset (ATZ)
solves the issue and after that the network manager connects
successfully.
Maybe someone help in finding a solution for this problem?
The software versions are
ii modemmanager 0.5.2.0-0ubunt D-Bus service for managing modems
ii network-manage 0.9.4.0-0ubunt network management framework (daemon and use
LSB Version:
core-2.0-ia32:core-2.0-noarch:core-3.0-ia32:core-3.0-noarch:core-3.1-ia32:core-3.1-noarch:core-3.2-ia32:core-3.2-noarch:core-4.0-ia32:core-4.0-noarch
Francesco
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: modemmanager 0.5.2.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-24.39-generic-pae 3.2.16
Uname: Linux 3.2.0-24-generic-pae i686
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
Date: Mon May 28 10:08:21 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: modemmanager
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: modemmanager (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 precise
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https://bugs.launchpad.net/bugs/1005436
Title:
can't connect with 3g internal modem using network-manager
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