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[Launchpad Bug Tracker <1036356@xxxxxxxxxxxxxxxxxx>]

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

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1036356

Title:
  Network sometimes extremely slow - ping over 1000 ms

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  Today network (connected via WLAN) feels very sluggish. A good
  indication for that can be achived by a simple ping:

  $ ping www.heise.de
  PING www.heise.de (193.99.144.85) 56(84) bytes of data.
  64 bytes from www.heise.de (193.99.144.85): icmp_req=1 ttl=249 time=56.5 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=2 ttl=249 time=56.4 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=3 ttl=249 time=4414 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=4 ttl=249 time=3442 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=5 ttl=249 time=2444 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=6 ttl=249 time=1450 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=7 ttl=249 time=5246 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=8 ttl=249 time=4256 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=9 ttl=249 time=3258 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=10 ttl=249 time=2261 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=11 ttl=249 time=4740 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=12 ttl=249 time=3756 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=13 ttl=249 time=2748 ms
  64 bytes from www.heise.de (193.99.144.85): icmp_req=14 ttl=249 time=1744 ms

  After reboot situation was better - but still showed apart from normal
  ping (~ 50 ms) once in a while "bursts" of times over 1000 ms.

  It's probably related to these messages I found in the log that are now appearing:
  iwlwifi 0000:0c:00.0: Queue 11 stuck for 2000 ms.
  iwlwifi 0000:0c:00.0: Current read_ptr 151 write_ptr 159
  iwlwifi 0000:0c:00.0: On demand firmware reload
  ieee80211 phy0: Hardware restart was requested

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-29-generic 3.2.0-29.46
  ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
  Uname: Linux 3.2.0-29-generic x86_64
  NonfreeKernelModules: nvidia
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  cm         2351 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
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xf6ffc000 irq 50'
     Mixer name	: 'IDT 92HD81B1C5'
     Components	: 'HDA:111d76d5,102802ef,00100104'
     Controls      : 24
     Simple ctrls  : 12
  Date: Mon Aug 13 21:30:12 2012
  HibernationDevice: RESUME=UUID=a77e93c2-3488-4347-80ca-9a8987669d5b
  InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  MachineType: Dell Inc. Precision M6500
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcEnviron:
   LANGUAGE=
   TERM=xterm
   PATH=(custom, user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic root=UUID=11a4d9bf-46d1-48d9-b353-2404262ec219 ro quiet splash enable_mtrr_cleanup mtrr_spare_reg_nr=1 hpet=disable vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-29-generic N/A
   linux-backports-modules-3.2.0-29-generic  N/A
   linux-firmware                            1.79
  SourcePackage: linux
  UpgradeStatus: Upgraded to precise on 2012-04-27 (107 days ago)
  dmi.bios.date: 06/07/2010
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A04
  dmi.board.name: 0R1203
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA04:bd06/07/2010:svnDellInc.:pnPrecisionM6500:pvr:rvnDellInc.:rn0R1203:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Precision M6500
  dmi.sys.vendor: Dell Inc.

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