Public bug reported:
I connect to a mobile broadband network through a Huawei USB 3G modem.
I stay connected all the time.
Every once in a while, with almost systematic periodicity (like every 20-30
minutes), without any apparent reason, whether or not I am using the network or
not, the nonnection suddenly goes down, and:
- the indicator shows I'm disconnected, the
- the mobile broadband networks (I have two of them configured, though I only
use one now) disappear from the list in nm-applet
- The option "Enable Mobile Broadband" at the bottom of the nm-applet menu
DISAPPEARS (not that it gets unchecked, it _disappears_ completely)
In order to reconnect I have to unplug and replug the usb modem, wait a
few seconds for it to be initialized or whatever, and then reconnect via
the nm-applet (when the nm-applet doesn't become unresponsive because of
another old known bug).
All the symptoms are EXACTLY as if someone had suddenly unplogged the
modem physically, so this may as well be a usb problem.
I have no idea what logs I should look for and attach.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4.2
ProcVersionSignature: Ubuntu 3.2.0-33.52-generic 3.2.31
Uname: Linux 3.2.0-33-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu14
Architecture: i386
Date: Fri Oct 26 20:10:24 2012
IfupdownConfig:
auto lo
iface lo inet loopback
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
IpRoute:
default via 10.64.64.64 dev ppp0 proto static
10.64.64.64 dev ppp0 proto kernel scope link src 77.210.172.228
169.254.0.0/16 dev ppp0 scope link metric 1000
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
ProcEnviron:
TERM=xterm
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: Upgraded to precise on 2012-05-17 (162 days ago)
mtime.conffile..etc.NetworkManager.NetworkManager.conf:
2012-08-30T13:38:55.126319
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
ttyUSB0 gsm connected
/org/freedesktop/NetworkManager/Devices/19
wlan0 802-11-wireless disconnected
/org/freedesktop/NetworkManager/Devices/1
eth0 802-3-ethernet unavailable
/org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI
WWAN-HARDWARE WWAN
running 0.9.4.0 connected enabled enabled
enabled enabled enabled
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 package-from-proposed precise running-unity
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https://bugs.launchpad.net/bugs/1071853
Title:
Randomly disconnects from mobile broadband network AND behaves as if
USB modem physically disconnected
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