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[Martin Schröder <1191510@xxxxxxxxxxxxxxxxxx>]

It does not work in Quantal (same symptoms). I attached the syslog.
I did logger to mark the notifications of network-manager in the syslog:
ubuntu@ubuntu:~$ logger "Before connection"
ubuntu@ubuntu:~$ logger "connected"
ubuntu@ubuntu:~$ logger "reconnecting..."
ubuntu@ubuntu:~$ logger "connected"

Environment was Ubuntu 12.10 quantal live usb with bcmwl-kernel-
source_5.100.82.112+bdcom-0ubuntu3_amd64.deb manually installed.

** Attachment added: "syslog"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1191510/+attachment/3752231/+files/syslog

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https://bugs.launchpad.net/bugs/1191510

Title:
  14e4:4359 Wifi disconnects every 10 seconds in WPA/WPA2 enterprise

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  If I connect to my university wifi (WPA/WPA2 enterprise, tunneled TLS,
  MSCHAPv2), after a short while I am disconnected and automatically
  connected again (~2 seconds connected, ~7 seconds disconnected).

  I will attach the output in syslog. At 14:36:30 the connection is
  established the first time. Then at 14:36:53 the interface is
  disconnected and at 14:36:59 connected again. This goes on without
  end.

  Ping shows the above mentioned timings:
  64 bytes from bk-in-f94.1e100.net (173.194.69.94): icmp_req=1694 ttl=49 time=8.22 ms
  64 bytes from bk-in-f94.1e100.net (173.194.69.94): icmp_req=1695 ttl=49 time=55.5 ms
  64 bytes from bk-in-f94.1e100.net (173.194.69.94): icmp_req=1702 ttl=49 time=8.31 ms
  64 bytes from bk-in-f94.1e100.net (173.194.69.94): icmp_req=1703 ttl=49 time=8.40 ms
  64 bytes from bk-in-f94.1e100.net (173.194.69.94): icmp_req=1711 ttl=49 time=9.61 ms
  64 bytes from bk-in-f94.1e100.net (173.194.69.94): icmp_req=1712 ttl=49 time=9.50 ms
  64 bytes from bk-in-f94.1e100.net (173.194.69.94): icmp_req=1719 ttl=49 time=8.36 ms
  64 bytes from bk-in-f94.1e100.net (173.194.69.94): icmp_req=1720 ttl=49 time=8.66 ms

  This error only occurs, when I'm "connected" to the university network. At home I don't have any problems.
  I also tried different wifi interfaces, its the same:
  lsusb
  Bus 002 Device 004: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n (USB-Stick)
  Bus 002 Device 003: ID 0a5c:5800 Broadcom Corp. BCM5880 Secure Applications Processor (Notebook-internal)

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-23-generic 3.8.0-23.34
  ProcVersionSignature: Ubuntu 3.8.0-23.34-generic 3.8.11
  Uname: Linux 3.8.0-23-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  moi        1947 F.... pulseaudio
                        moi        6485 F.... pulseaudio
  CRDA:
   country DE:
   	(2400 - 2483 @ 40), (N/A, 20)
   	(5150 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
   	(5250 - 5350 @ 40), (N/A, 20), NO-OUTDOOR, DFS
   	(5470 - 5725 @ 40), (N/A, 26), DFS
  Date: Sun Jun 16 14:29:20 2013
  HibernationDevice: RESUME=UUID=2718c8c5-0653-4954-b481-e48b086c7619
  InstallationDate: Installed on 2013-06-05 (11 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: Dell Inc. Latitude E6520
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   SHELL=/bin/bash
   PATH=(custom, user)
   LANG=de_DE.UTF-8
   XDG_RUNTIME_DIR=<set>
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-23-generic root=UUID=a90e64e3-94f8-481e-b28f-c6b3b708dd6c ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-23-generic N/A
   linux-backports-modules-3.8.0-23-generic  N/A
   linux-firmware                            1.106
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/07/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A17
  dmi.board.name: 0NVF5K
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA17:bd03/07/2013:svnDellInc.:pnLatitudeE6520:pvr01:rvnDellInc.:rn0NVF5K:rvrA01:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E6520
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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