Update : This seemed to occur under wifi load. Streaming youtube HD or running a repeated speedtest such as http://www.speedtest.bbmax.co.uk/
After which all connections were dropped even though network manager still showed connected via wifi. Could not connect to local router ip address. Needs to be rebooted. BTW win7 dual boot is fine. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1000208 Title: wifi network get disconnected periodically -- Realtek RTL8191SEvA Status in “network-manager” package in Ubuntu: Incomplete Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1000208/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
