solution/fix and its a permanent. type in command line :
sudo modprobe ath5k nohwcrypt sudo sh -c "echo 'options ath5k nohwcrypt' >/etc/modprobe.d/custom- wireless.conf" -- 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/1214588 Title: Wifi stops working after a while Status in “network-manager” package in Ubuntu: New Bug description: After a while - sometimes a few hours, sometimes a day - NetworkManager disconnects from Wifi and fails to reconnect. Disabling wifi and re-enabling it fixes the problem. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: network-manager 0.9.8.0-0ubuntu6 ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5 Uname: Linux 3.8.0-29-generic x86_64 ApportVersion: 2.9.2-0ubuntu8.3 Architecture: amd64 Date: Tue Aug 20 13:20:47 2013 EcryptfsInUse: Yes IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2013-04-05 (137 days ago) InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.1) IpRoute: 172.16.73.0/24 dev vmnet8 proto kernel scope link src 172.16.73.1 192.168.235.0/24 dev vmnet1 proto kernel scope link src 192.168.235.1 MarkForUpload: True NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true SourcePackage: network-manager UpgradeStatus: Upgraded to raring on 2013-04-12 (129 days ago) nmcli-dev: DEVICE TYPE STATE DBUS-PATH wlan0 802-11-wireless connecting (configuring) /org/freedesktop/NetworkManager/Devices/0 nmcli-nm: RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running 0.9.8.0 connecting enabled enabled enabled enabled enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1214588/+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
