You can go to the edit connections dialog to view the password in plain text and compare it to the one entered in the failed-connection dialog. If the password stored is not the one you have entered, you have found a bug, that the entered password is not stored. You can try to change it in the edit connections dialog, if it is wrong. Then verify if the password has actually been changed.
I have experienced such a problem together with Bug #1542733 with a ubuntu 16.04.1 LTS live cd. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1263356 Title: Asks for authentication repeatedly, never establishes connection Status in network-manager package in Ubuntu: New Bug description: I will try to connect to a wireless network. Every few moments, I'm asked for authentication again. A connection is never established. Tried multiple networks with different security types, the same problem on all of them. Able to connect on a wired connection just fine. Intel Centrino Wireless-N 2230 is the wireless hardware. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: network-manager 0.9.8.0-0ubuntu22 ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7 Uname: Linux 3.11.0-14-generic x86_64 ApportVersion: 2.12.5-0ubuntu2.1 Architecture: amd64 Date: Sat Dec 21 11:23:23 2013 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2013-12-11 (9 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) IpRoute: default via 10.0.0.1 dev eth0 proto static 10.0.0.0/24 dev eth0 proto kernel scope link src 10.0.0.17 metric 1 MarkForUpload: True 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 498dbdcf-33fc-4388-ad11-8170fd1f3668 802-3-ethernet 1387642926 Sat 21 Dec 2013 11:22:06 AM EST yes no /org/freedesktop/NetworkManager/Settings/1 RINGNETGEAR de8f4e94-29a4-4c08-a2ef-7f7e30970a33 802-11-wireless 0 never yes no /org/freedesktop/NetworkManager/Settings/0 nmcli-dev: DEVICE TYPE STATE DBUS-PATH wlan0 802-11-wireless disconnected /org/freedesktop/NetworkManager/Devices/1 eth0 802-3-ethernet connected /org/freedesktop/NetworkManager/Devices/0 nmcli-nm: RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running 0.9.8.0 connected enabled enabled enabled enabled disabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1263356/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
