Hi,

I just installed Ubuntu 11.04 from scratch. I tried to connect to my
wireless network WPA&WPA2 Personal, hidden network and it failed. When
'unhiding' the network, it connects without any problem. After hiding
during the network being active it remains active.

After disabling wireless and enabling wireless (in the mean time
connected to another network) it can not connect anymore.

The syslog shows messages like:
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) starting 
connection 'fb'
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> (wlan0): device state change: 
3 -> 4 (reason 0)
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 1 of 
5 (Device Prepare) scheduled...
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 1 of 
5 (Device Prepare) started...
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 2 of 
5 (Device Configure) scheduled...
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 1 of 
5 (Device Prepare) complete.
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 2 of 
5 (Device Configure) starting...
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> (wlan0): device state change: 
4 -> 5 (reason 0)
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0/wireless): 
access point 'fb' has security, but secrets are required.
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> (wlan0): device state change: 
5 -> 6 (reason 0)
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 2 of 
5 (Device Configure) complete.
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 1 of 
5 (Device Prepare) scheduled...
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 1 of 
5 (Device Prepare) started...
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> (wlan0): device state change: 
6 -> 4 (reason 0)
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 2 of 
5 (Device Configure) scheduled...
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 1 of 
5 (Device Prepare) complete.
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 2 of 
5 (Device Configure) starting...
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> (wlan0): device state change: 
4 -> 5 (reason 0)
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0/wireless): 
connection 'fb' has security, and secrets exist.  No new secrets needed.
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Config: added 'ssid' value 'fb'
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Config: added 'scan_ssid' 
value '1'
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Config: added 'key_mgmt' value 
'WPA-PSK'
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Config: added 'psk' value 
'<omitted>'
Apr 29 14:32:25 fbdb NetworkManager[766]: 
nm_setting_802_1x_get_pkcs11_engine_path: assertion `NM_IS_SETTING_802_1X 
(setting)' failed
Apr 29 14:32:25 fbdb NetworkManager[766]: 
nm_setting_802_1x_get_pkcs11_module_path: assertion `NM_IS_SETTING_802_1X 
(setting)' failed
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Activation (wlan0) Stage 2 of 
5 (Device Configure) complete.
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> Config: set interface ap_scan 
to 2
Apr 29 14:32:25 fbdb wpa_supplicant[913]: Trying to associate with SSID 'fb'
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  inactive -> scanning
Apr 29 14:32:25 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  scanning -> associating
Apr 29 14:32:27 fbdb wpa_supplicant[913]: Associated with 00:14:7f:c5:15:d6
Apr 29 14:32:27 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  associating -> associated
Apr 29 14:32:27 fbdb kernel: [  148.837371] ADDRCONF(NETDEV_CHANGE): wlan0: 
link becomes ready
Apr 29 14:32:27 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  associated -> 4-way handshake
Apr 29 14:32:27 fbdb wpa_supplicant[913]: WPA: 4-Way Handshake failed - 
pre-shared key may be incorrect
Apr 29 14:32:27 fbdb wpa_supplicant[913]: CTRL-EVENT-DISCONNECTED 
bssid=00:14:7f:c5:15:d6 reason=0
Apr 29 14:32:27 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  4-way handshake -> disconnected
Apr 29 14:32:27 fbdb wpa_supplicant[913]: Trying to associate with SSID 'fb'
Apr 29 14:32:27 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  disconnected -> scanning
Apr 29 14:32:27 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  scanning -> associating
Apr 29 14:32:28 fbdb wpa_supplicant[913]: Associated with 00:14:7f:c5:15:d6
Apr 29 14:32:28 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  associating -> associated
Apr 29 14:32:28 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  associated -> 4-way handshake
Apr 29 14:32:28 fbdb wpa_supplicant[913]: WPA: 4-Way Handshake failed - 
pre-shared key may be incorrect
Apr 29 14:32:28 fbdb wpa_supplicant[913]: CTRL-EVENT-DISCONNECTED 
bssid=00:14:7f:c5:15:d6 reason=0
Apr 29 14:32:28 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  4-way handshake -> disconnected
Apr 29 14:32:28 fbdb wpa_supplicant[913]: Trying to associate with SSID 'fb'
Apr 29 14:32:28 fbdb NetworkManager[766]: <info> (wlan0): supplicant connection 
state:  disconnected -> scanning

I hope this helps to discover the problem.

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https://bugs.launchpad.net/bugs/294175

Title:
  Intrepid Network Manager cannot connect to Hidden wireless networks

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