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

[Martin Schröder]

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.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.10 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-rc6-saucy/

[Martin Schröder (martinschroeder)]

I had problems installing the mainline kernel:

run-parts: executing /etc/kernel/header_postinst.d/dkms 3.10.0-031000rc6-generic /boot/vmlinuz-3.10.0-031000rc6-generic
ERROR (dkms apport): kernel package linux-headers-3.10.0-031000rc6-generic is not supported
Error! Bad return status for module build on kernel: 3.10.0-031000rc6-generic (x86_64)
Consult /var/lib/dkms/bcmwl/6.20.155.1+bdcom/build/make.log for more information.

I will try the daily saucy build with the most recent mainline kernel and report the result.

[Martin Schröder (martinschroeder)]

With 3.10.0-031000rc6-generic the problem persists.

[Martin Schröder (martinschroeder)]

I already run the latest BIOS:

sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
A17
03/07/2013

I updated the BIOS directly after installing Ubuntu (because of other problems I had), so I can't tell if the Wifi problem was existent in previous BIOS versions.

[penalvch (penalvch)]

Martin Schröder, did this problem not occur in a release prior to Raring?

[Martin Schröder (martinschroeder)]

I can't really tell, because I didn't use this particular notebook with 12.10 inside my University. Before, I had a different notebook and it worked fine with all versions up to 12.10 (concerning wifi). (Then it broke and I had to replace it.)

[penalvch (penalvch)]

Martin Schröder, for regression testing purposes, could you please test for this in Precise via http://releases.ubuntu.com/precise/ and report the results?

[Martin Schröder (martinschroeder)]

I tried ubuntu-12.04.2-desktop-amd64.iso from usb. After installing the proprietary driver, everything worked fine: no disconnections.

[penalvch (penalvch)]

Martin Schröder, consolidating the report focus, which WiFi device specifically works in Precise, the Atheros USB stick, and/or the internal Broadcom?

[Martin Schröder (martinschroeder)]

It worked in Precise with internal Broadcom card. I didn't check the Atheros stick. In Raring neither of both works correctly.

[penalvch (penalvch)]

Martin Schröder, for regression purposes, could you please test the Broadcom only in Quantal and report the results via http://releases.ubuntu.com/quantal/ ?

[Martin Schröder (martinschroeder)]

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.

[penalvch (penalvch)]

Martin Schröder, thank you for testing Quantal. To help narrow this down to either kernel or bcmwl-kernel-source, could you please test in Precise the Raring kernel via https://launchpad.net/~canonical-kernel-team/+archive/ppa/+build/4722689 ?

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]