iwl3945abg: Can not connect to 'eduroam' (PEAP, MSCHAPv2)

[Maui Muc]

Since I am running Trusty on my ThinkPad T60 with Intel PRO/Wireless 3945ABG I can no longer connect to the 'eduroam' wireless network of University of Potsdam. It again and again asks for user-name and password. Dead certain, there is no spelling mistake. My Nexus 5 connects just fine. It is even more. With Ubuntu 12.04.5 live and earlier I can OOB successfully connect with the 'eduroam' network.

While trying to connect syslog says:
wpa_supplicant[2949]: wlan0: CTRL-EVENT-SSID-REENABLED id=0 ssid="eduroam"
wpa_supplicant[2949]: wlan0: SME: Trying to authenticate with 64:d9:89:6d:ce:dd (SSID='eduroam' freq=5320 MHz)
kernel: [ 277.639922] wlan0: authenticate with 64:d9:89:6d:ce:dd
kernel: [ 277.643045] wlan0: direct probe to 64:d9:89:6d:ce:dd (try 1/3)
NetworkManager[2719]: <info> (wlan0): supplicant interface state: scanning -> authenticating
wpa_supplicant[2949]: wlan0: Trying to associate with 64:d9:89:6d:ce:dd (SSID='eduroam' freq=5320 MHz)
kernel: [ 277.844094] wlan0: send auth to 64:d9:89:6d:ce:dd (try 2/3)
kernel: [ 277.845687] wlan0: authenticated
kernel: [ 277.846031] iwl3945 0000:03:00.0 wlan0: disabling HT as WMM/QoS is not supported by the AP
kernel: [ 277.846040] iwl3945 0000:03:00.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP
kernel: [ 277.853237] wlan0: associate with 64:d9:89:6d:ce:dd (try 1/3)
NetworkManager[2719]: <info> (wlan0): supplicant interface state: authenticating -> associating
wpa_supplicant[2949]: wlan0: Associated with 64:d9:89:6d:ce:dd
kernel: [ 277.857918] wlan0: RX AssocResp from 64:d9:89:6d:ce:dd (capab=0x11 status=0 aid=2)
kernel: [ 277.859119] wlan0: associated
kernel: [ 277.859208] cfg80211: Calling CRDA for country: DE
wpa_supplicant[2949]: wlan0: CTRL-EVENT-EAP-STARTED EAP authentication started
NetworkManager[2719]: <info> (wlan0): supplicant interface state: associating -> associated
kernel: [ 277.865527] cfg80211: Regulatory domain changed to country: DE
kernel: [ 277.865533] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
kernel: [ 277.865536] cfg80211: (2400000 KHz - 2483500 KHz @ 40000 KHz), (N/A, 2000 mBm)
kernel: [ 277.865539] cfg80211: (5150000 KHz - 5250000 KHz @ 40000 KHz), (N/A, 2000 mBm)
kernel: [ 277.865541] cfg80211: (5250000 KHz - 5350000 KHz @ 40000 KHz), (N/A, 2000 mBm)
kernel: [ 277.865544] cfg80211: (5470000 KHz - 5725000 KHz @ 40000 KHz), (N/A, 2698 mBm)
kernel: [ 277.865546] cfg80211: (57240000 KHz - 65880000 KHz @ 2160000 KHz), (N/A, 4000 mBm)
NetworkManager[2719]: <warn> Activation (wlan0/wireless): association took too long.
NetworkManager[2719]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
NetworkManager[2719]: <warn> Activation (wlan0/wireless): asking for new secrets
kernel: [ 285.004318] wlan0: deauthenticating from 64:d9:89:6d:ce:dd by local choice (reason=3)
wpa_supplicant[2949]: wlan0: CTRL-EVENT-DISCONNECTED bssid=64:d9:89:6d:ce:dd reason=3 locally_generated=1
kernel: [ 285.028971] cfg80211: Calling CRDA to update world regulatory domain
kernel: [ 285.035784] cfg80211: World regulatory domain updated:
kernel: [ 285.035790] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
kernel: [ 285.035793] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
kernel: [ 285.035796] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
kernel: [ 285.035799] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
kernel: [ 285.035801] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
kernel: [ 285.035804] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
NetworkManager[2719]: <warn> Connection disconnected (reason -3)
NetworkManager[2719]: <info> (wlan0): supplicant interface state: associated -> disconnected
NetworkManager[2719]: <warn> Couldn't disconnect supplicant interface: This interface is not connected.
NetworkManager[2719]: <warn> Connection disconnected (reason -3)
NetworkManager[2719]: <warn> No agents were available for this request.
NetworkManager[2719]: <info> (wlan0): device state change: need-auth -> failed (reason 'no-secrets') [60 120 7]
NetworkManager[2719]: <info> NetworkManager state is now DISCONNECTED
NetworkManager[2719]: <info> Marking connection 'eduroam' invalid.
NetworkManager[2719]: <warn> Activation (wlan0) failed for connection 'eduroam'
NetworkManager[2719]: <info> (wlan0): device state change: failed -> disconnected (reason 'none') [120 30 0]
NetworkManager[2719]: <info> (wlan0): deactivating device (reason 'none') [0]
wpa_supplicant[2949]: wlan0: CTRL-EVENT-SCAN-STARTED

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: network-manager 0.9.8.8-0ubuntu7
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CasperVersion: 1.340
CurrentDesktop: Unity
Date: Mon Sep 29 11:47:51 2014
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
IpRoute:
 default via 141.89.176.254 dev eth0 proto static
 141.89.176.0/24 dev eth0 proto kernel scope link src 141.89.176.203 metric 1
LiveMediaBuild: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-con:
 NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH
 eduroam 17954fe6-eefa-4a59-8ee7-b5ac8f83cc26 802-11-wireless 0 never yes no /org/freedesktop/NetworkManager/Settings/1
 Wired connection 1 c51e9b90-dcca-4c3a-9cac-9200adba1f32 802-3-ethernet 1411998461 Mon 29 Sep 2014 01:47:41 PM UTC yes no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 wlan0 802-11-wireless unavailable /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 0.9.8.8 connected enabled disabled disabled enabled disabled

[Launchpad Janitor (janitor)]

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

[Clemens Messerschmidt (messersc)]

Funny thing is, it worked still on 10th October 2014.
(eduroam with University Potsdam account)