@SJI: Please remove the device, reboot, insert the device, reproduce the
problem of failing to connect, then connect some other way and run
"apport-collect 875424" to submit more information about the affected
system.

** Summary changed:

- unable to connect to encrypted access point with r8712 driver
+ With USB Wi-Fi adapter, NM is unable to connect to any network with 
encryption; deleting connection details fixes the problem but it just happens 
again -- Realtek RTL8191S r8712

** Summary changed:

- With USB Wi-Fi adapter, NM is unable to connect to any network with 
encryption; deleting connection details fixes the problem but it just happens 
again -- Realtek RTL8191S r8712
+ With USB Wi-Fi adapter, NM is unable to connect to any network with 
encryption; deleting connection details fixes the problem but it just happens 
again -- Realtek RTL8191S r8712u

** Changed in: network-manager (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/875424

Title:
  With USB Wi-Fi adapter, NM is unable to connect to any network with
  encryption; deleting connection details fixes the problem but it just
  happens again -- Realtek RTL8191S r8712u

Status in “network-manager” package in Ubuntu:
  Incomplete

Bug description:
  Wifi was working without issue under Ubuntu 11.04. After upgrading to
  Ubuntu 11.10 Wifi will not connect if the access point has encryption
  enabled.

  r8712u module is being loaded for Wifi adapter.

  Output from lsusb:
  Bus 001 Device 003: ID 0bda:8172 Realtek Semiconductor Corp. RTL8191S WLAN 
Adapter

  Output from uname -a:
  Linux boron 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 
x86_64 x86_64 x86_64 GNU/Linux

  Output from syslog during connection attempt:
  Oct 16 02:47:25 boron NetworkManager[950]: <info> (wlan0): supplicant 
interface state: starting -> ready
  Oct 16 02:47:25 boron NetworkManager[950]: <info> (wlan0): device state 
change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42]
  Oct 16 02:47:25 boron NetworkManager[950]: <info> (wlan0): supplicant 
interface state: ready -> inactive
  Oct 16 02:47:49 boron NetworkManager[950]: <info> Activation (wlan0) starting 
connection '42'
  Oct 16 02:47:49 boron NetworkManager[950]: <info> (wlan0): device state 
change: disconnected -> prepare (reason 'none') [30 40 0]
  Oct 16 02:47:49 boron NetworkManager[950]: <info> Activation (wlan0) Stage 1 
of 5 (Device Prepare) scheduled...
  Oct 16 02:47:49 boron NetworkManager[950]: <info> Activation (wlan0) Stage 1 
of 5 (Device Prepare) started...
  Oct 16 02:47:49 boron NetworkManager[950]: <info> Activation (wlan0) Stage 2 
of 5 (Device Configure) scheduled...
  Oct 16 02:47:49 boron NetworkManager[950]: <info> Activation (wlan0) Stage 1 
of 5 (Device Prepare) complete.
  Oct 16 02:47:49 boron NetworkManager[950]: <info> Activation (wlan0) Stage 2 
of 5 (Device Configure) starting...
  Oct 16 02:47:49 boron NetworkManager[950]: <info> (wlan0): device state 
change: prepare -> config (reason 'none') [40 50 0]
  Oct 16 02:47:49 boron NetworkManager[950]: <info> Activation 
(wlan0/wireless): access point '42' has security, but secrets are required.
  Oct 16 02:47:49 boron NetworkManager[950]: <info> (wlan0): device state 
change: config -> need-auth (reason 'none') [50 60 0]
  Oct 16 02:47:49 boron NetworkManager[950]: <info> Activation (wlan0) Stage 2 
of 5 (Device Configure) complete.
  Oct 16 02:47:50 boron NetworkManager[950]:    keyfile: updating 
/etc/NetworkManager/system-connections/42
  Oct 16 02:48:11 boron NetworkManager[950]: get_secret_flags: assertion 
`is_secret_prop (setting, secret_name, error)' failed
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Activation (wlan0) Stage 1 
of 5 (Device Prepare) scheduled...
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Activation (wlan0) Stage 1 
of 5 (Device Prepare) started...
  Oct 16 02:48:11 boron NetworkManager[950]: <info> (wlan0): device state 
change: need-auth -> prepare (reason 'none') [60 40 0]
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Activation (wlan0) Stage 2 
of 5 (Device Configure) scheduled...
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Activation (wlan0) Stage 1 
of 5 (Device Prepare) complete.
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Activation (wlan0) Stage 2 
of 5 (Device Configure) starting...
  Oct 16 02:48:11 boron NetworkManager[950]: <info> (wlan0): device state 
change: prepare -> config (reason 'none') [40 50 0]
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Activation 
(wlan0/wireless): connection '42' has security, and secrets exist.  No new 
secrets needed.
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Config: added 'ssid' value 
'*'
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Config: added 'scan_ssid' 
value '1'
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Config: added 'key_mgmt' 
value 'NONE'
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Config: added 'wep_key0' 
value '<omitted>'
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Config: added 
'wep_tx_keyidx' value '0'
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Activation (wlan0) Stage 2 
of 5 (Device Configure) complete.
  Oct 16 02:48:11 boron NetworkManager[950]: <info> Config: set interface 
ap_scan to 1
  Oct 16 02:48:11 boron NetworkManager[950]: <info> (wlan0): supplicant 
interface state: inactive -> scanning
  Oct 16 02:49:11 boron NetworkManager[950]: <warn> Activation 
(wlan0/wireless): association took too long.
  Oct 16 02:49:11 boron NetworkManager[950]: <info> (wlan0): device state 
change: config -> need-auth (reason 'none') [50 60 0]
  Oct 16 02:49:11 boron NetworkManager[950]: <warn> Activation 
(wlan0/wireless): asking for new secrets
  Oct 16 02:49:11 boron NetworkManager[950]: <warn> Couldn't disconnect 
supplicant interface: This interface is not connected.
  Oct 16 02:49:11 boron NetworkManager[950]: <warn> Couldn't disconnect 
supplicant interface: This interface is not connected.
  Oct 16 02:49:16 boron NetworkManager[950]: <info> (wlan0): supplicant 
interface state: scanning -> inactive
  Oct 16 02:49:18 boron NetworkManager[950]: get_secret_flags: assertion 
`is_secret_prop (setting, secret_name, error)' failed
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Activation (wlan0) Stage 1 
of 5 (Device Prepare) scheduled...
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Activation (wlan0) Stage 1 
of 5 (Device Prepare) started...
  Oct 16 02:49:18 boron NetworkManager[950]: <info> (wlan0): device state 
change: need-auth -> prepare (reason 'none') [60 40 0]
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Activation (wlan0) Stage 2 
of 5 (Device Configure) scheduled...
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Activation (wlan0) Stage 1 
of 5 (Device Prepare) complete.
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Activation (wlan0) Stage 2 
of 5 (Device Configure) starting...
  Oct 16 02:49:18 boron NetworkManager[950]: <info> (wlan0): device state 
change: prepare -> config (reason 'none') [40 50 0]
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Activation 
(wlan0/wireless): connection '42' has security, and secrets exist.  No new 
secrets needed.
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Config: added 'ssid' value 
'*'
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Config: added 'scan_ssid' 
value '1'
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Config: added 'key_mgmt' 
value 'NONE'
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Config: added 'wep_key0' 
value '<omitted>'
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Config: added 
'wep_tx_keyidx' value '0'
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Activation (wlan0) Stage 2 
of 5 (Device Configure) complete.
  Oct 16 02:49:18 boron NetworkManager[950]: <info> Config: set interface 
ap_scan to 1
  Oct 16 02:49:18 boron NetworkManager[950]: <info> (wlan0): supplicant 
interface state: inactive -> scanning
  Oct 16 02:50:19 boron NetworkManager[950]: <warn> Activation 
(wlan0/wireless): association took too long.
  Oct 16 02:50:19 boron NetworkManager[950]: <info> (wlan0): device state 
change: config -> need-auth (reason 'none') [50 60 0]
  Oct 16 02:50:19 boron NetworkManager[950]: <warn> Activation 
(wlan0/wireless): asking for new secrets
  Oct 16 02:50:19 boron NetworkManager[950]: <warn> Couldn't disconnect 
supplicant interface: This interface is not connected.
  Oct 16 02:50:19 boron NetworkManager[950]: <warn> Couldn't disconnect 
supplicant interface: This interface is not connected.
  Oct 16 02:50:23 boron NetworkManager[950]: <info> (wlan0): supplicant 
interface state: scanning -> inactive
  Oct 16 02:52:19 boron NetworkManager[950]: <warn> No agents were available 
for this request.
  Oct 16 02:52:19 boron NetworkManager[950]: <info> (wlan0): device state 
change: need-auth -> failed (reason 'no-secrets') [60 120 7]
  Oct 16 02:52:19 boron NetworkManager[950]: <warn> Activation (wlan0) failed 
for access point (42)
  Oct 16 02:52:19 boron NetworkManager[950]: <info> Marking connection '42' 
invalid.
  Oct 16 02:52:19 boron NetworkManager[950]: <warn> Activation (wlan0) failed.
  Oct 16 02:52:19 boron NetworkManager[950]: <info> (wlan0): device state 
change: failed -> disconnected (reason 'none') [120 30 0]
  Oct 16 02:52:19 boron NetworkManager[950]: <info> (wlan0): deactivating 
device (reason 'none') [0]

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