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[poko <pokopt@xxxxxxxxx>]

Experienced same problems (iwlwifi) - was not able to connect using wicd or wpa_supplicant directly.
wpa_supplicant gave errors:

Successfully initialized wpa_supplicant
wlan0: SME: Trying to authenticate with XX:XX:XX:XX:XX:XX (SSID='ssid' freq=2422 MHz)
wlan0: Trying to associate with XX:XX:XX:XX:XX:XX (SSID='ssid' freq=2422 MHz)
wlan0: Associated with XX:XX:XX:XX:XX:XX
wlan0: CTRL-EVENT-DISCONNECTED bssid=XX:XX:XX:XX:XX:XX reason=3 locally_generated=1
wlan0: WPA: 4-Way Handshake failed - pre-shared key may be incorrect
wlan0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="ssid" auth_failures=1 duration=10 reason=WRONG_KEY
wlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
wlan0: CTRL-EVENT-SSID-REENABLED id=0 ssid="ssid"

I found out I'm able to connect using nm (nm-tui). Uninstalling network-
manager (apt-get autoremove network-manager) did the trick and I can use
wicd (wpa_supplicant) again.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1173759

Title:
  Ubuntu 13.04 can detect wi-fi but can't connect

Status in linux package in Ubuntu:
  Expired

Bug description:
  HP Pavilion laptop with Ralink RT5390 wireless interface

  1. Can detect home wi-fi signal but can't connect. Keeps asking for
  password then "disconnects" over and over again.

  2. All other computers, tablets, and smartphones at home can connect
  to the wi-fi without any trouble at all.

  3. HP Pavilion laptop can connect to the internet if tethered to my
  smartphone (used as a portable wi-fi hotspot).

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