Comment 0 for bug 1000208

I found a few similar bugs in launchpad history but they are at least 3-4 years old, and I encounter this problem just after upgrade to 12.04!

I consulted a colleague who is a network expert, he suggested me to stop using wireless mouse, adjusted router settings, such as changed channels, added mac address binding, stopped ssid broadcasting, just in case there are some hackers trying to attack my network, but to no avail.

Their are still possibilities of hardware configuration, environment issues or hackers around my house, but the most strange thing that triggered me reporting this bug is that all my other devices like windows laptop, android phones are all OK, only this Ubuntu laptop having problem!

I also attach 2 files, one is the output of a ping command so that you can see what happened (during the ping session I tried to let network manager reconnect, even if it reconnected, the network is still not pingable.

Another file is syslog about the network manager.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Wed May 16 20:47:46 2012
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IpRoute:
 default via 10.0.0.3 dev wlan0 proto static
 10.0.0.0/24 dev wlan0 proto kernel scope link src 10.0.0.202 metric 2
 169.254.0.0/16 dev wlan0 scope link metric 1000
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
 NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH
 Wired connection 1 1438463e-1c73-40f3-b17c-7e348b229da5 802-3-ethernet 1337172058 2012年05月16日 星期三 20时40分58秒 yes no /org/freedesktop/NetworkManager/Settings/1
 MINGYANG 3cba4065-6d37-46ff-b35b-1f94b2bae5ba 802-11-wireless 1337172358 2012年05月16日 星期三 20时45分58秒 yes no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 wlan0 802-11-wireless connected /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 disabled