Unable to Connect to Wi-Fi with Saved Password

[Sah Lee]

It's been months. Before this my Wi-Fi used to work fine.

Now I cannot connect to Wi-Fi at my office as long as I let Ubuntu remember the password.
The "Wi-Fi Network Authentication Required" dialog keeps popping up asking me to enter my password.
It's acting like when you enter a wrong password.

And yes, I am sure the password is correct.
Because if I select "Ask for this password every time", then usually it connects without a problem after I enter the same password.

I guess it's worth mentioning that it still fails sometimes, even I let it ask for password.
It just keeps failing and asking for password again and again.
In such cases I turn off the WLAN adapter with the hardware switch, and then turn it back on. This usually fixes it.

This only happens at office. Everything works fine at home.
And my Android phone connects to the same office Wi-Fi without a problem.

The Wi-Fi security settings are as following:
Security: WPA & WPA2 Enterprise
Authentication: Protected EAP (PEAP)
Anonymouse identity: <left empty>
CA certificate: (None)
PEAP version: Automatic
Inner authentication: MSCHAPv2
Username: <my corporate id>

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: network-manager 0.9.8.0-0ubuntu6
ProcVersionSignature: Ubuntu 3.8.0-30.44-generic 3.8.13.6
Uname: Linux 3.8.0-30-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Wed Sep 18 11:58:28 2013
InstallationDate: Installed on 2012-08-12 (402 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IpRoute:
 default via 150.236.220.1 dev wlan0 proto static
 10.0.0.0/8 dev tun0 scope link
 150.236.220.0/23 dev wlan0 proto kernel scope link src 150.236.221.32 metric 9
 169.254.0.0/16 dev wlan0 scope link metric 1000
 192.168.56.0/24 dev vboxnet0 proto kernel scope link src 192.168.56.1
MarkForUpload: True
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: Upgraded to raring on 2013-04-26 (144 days ago)
http_proxy: http://localhost:3128/
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 0.9.8.0 connected enabled enabled enabled disabled disabled
no_proxy: localhost,127.0.0.0/8

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Kai Blin (kai.blin)]

Happens to me on 14.04 as well. As I don't have a hardware switch for the WiFi, I just "sudo killall NetworkManager", which also fixes it for a while.

[Horst Schirmeier (horst)]

Is the correct password mentioned in /etc/NetworkManager/system-connections/eduroam (or whichever SSID is affected in your case) in a "password=MYPASSWORD" line? In my case I didn't have such a line, and replacing "password-flags=1" with "password=MYPASSWORD" fixed automatic connecting for me.