Ubuntu
linux package

Thinkpad T60 drops iwl3945 wireless network connection every few minutes

Bug #653826 reported by James Rieve on 2010-10-02

This bug report is a duplicate of: Bug #569841: wireless network has problem connecting and sometimes disconnect. Edit Remove

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Incomplete	Undecided	Unassigned

Bug Description

IBM Thinkpad T60 (laptop computer) drops wireless network connection every few minutes. The radio must be turned off then back on using the switch on the front of the laptop to regain connection. Large data transfers seem to trigger the problem immediately - for example, an FTP session might make it through 4 or 5 mp3's before the network disconnects.
The wireless router is a Netgear:
Hardware Version WGR614v10
Firmware Version V1.0.2.26_51.0.59NA
Region North America
Channel Auto (11)
Mode Up to 54 Mbps
The same behavior occurs with WEP turned on and WEP turned off and with various permutations of these settings on the wireless router:
Fragmentation Length (256-2346): [2346]
CTS/RTS Threshold (1-2347): [2347]
Preamble Mode [long or short]

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-25-generic 2.6.32-25.44
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-25.44-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices: aplay: device_list:223: no soundcards found...
Architecture: i386
ArecordDevices: arecord: device_list:223: no soundcards found...
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/dsp', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/by-path', '/dev/snd/controlC29', '/dev/snd/seq', '/dev/snd/timer', '/dev/sequencer2', '/dev/sequencer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
Date: Sat Oct 2 17:54:25 2010
HibernationDevice: RESUME=UUID=6bdced6b-626d-43e9-96f9-55e500814c53
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.1)
MachineType: LENOVO 20074DU
PccardctlIdent:
Socket 0:
   no product info available
PccardctlStatus:
Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-25-generic root=UUID=891e43d0-b185-4f97-835b-d3abb3004474 ro quiet splash
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34.1
RfKill:
0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
dmi.bios.date: 08/27/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 79ETE5WW (2.25 )
dmi.board.name: 20074DU
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr79ETE5WW(2.25):bd08/27/2009:svnLENOVO:pn20074DU:pvrThinkPadT60:rvnLENOVO:rn20074DU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 20074DU
dmi.product.version: ThinkPad T60
dmi.sys.vendor: LENOVO

Tags:

Revision history for this message

James Rieve (jrieve) wrote on 2010-10-02:

cat dmesg.log > logs; cat uname-a.log >> logs; cat version.log >> logs; cat lspci-vvnn.log >> logs Edit (146.7 KiB, text/plain)
AlsaDevices.txt Edit (521 bytes, text/plain; charset="utf-8")
BootDmesg.txt Edit (52.2 KiB, text/plain; charset="utf-8")
Card0.Amixer.info.txt Edit (1.1 KiB, text/plain; charset="utf-8")
Card0.Amixer.values.txt Edit (1.0 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec.0.txt Edit (7.6 KiB, text/plain; charset="utf-8")
Card29.Amixer.info.txt Edit (1.1 KiB, text/plain; charset="utf-8")
Card29.Amixer.values.txt Edit (1.0 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (123.0 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (1.3 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (490 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (12.1 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (493 bytes, text/plain; charset="utf-8")
PciMultimedia.txt Edit (597 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.4 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.6 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (2.7 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (106.9 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (241.2 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (254.1 KiB, text/plain; charset="utf-8")

Revision history for this message

Jeremy Foshee (jeremyfoshee) wrote on 2010-10-15:

Hi James,

If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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