while being online computer looses it network connection every once in a while, sometimes after an hour, sometimes already after a few seconds. disabling an enabling network solves problem until the next breakdown of network connection.
/var/log/messages output whenever it happens:
[63122.135554] ------------[ cut here ]------------
[63122.135572] WARNING: at /build/buildd/linux-2.6.32/net/mac80211/agg-tx.c:150 ___ieee80211_stop_tx_ba_session+0x89/0x90 [mac80211]()
[63122.135574] Hardware name: HP Pavilion dv7 Notebook PC
[63122.135576] Modules linked in: udf crc_itu_t usbhid hid nls_iso8859_1 nls_cp437 vfat fat usb_storage nls_utf8 isofs aes_i586 aes_generic binfmt_misc ppdev vboxnetadp vboxnetflt vboxdrv dm_crypt snd_hda_codec_nvhdmi snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm arc4 snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event iwlagn snd_seq iwlcore uvcvideo joydev snd_timer snd_seq_device hp_accel jmb38x_ms videodev mac80211 snd lirc_ene0100 lis3lv02d memstick v4l1_compat soundcore sdhci_pci lirc_dev psmouse input_polldev sdhci cfg80211 snd_page_alloc led_class serio_raw lp parport fbcon tileblit font bitblit softcursor vga16fb vgastate nouveau ttm drm_kms_helper intel_agp drm ohci1394 i2c_algo_bit agpgart ahci r8169 mii ieee1394 video output
[63122.135639] Pid: 16058, comm: events/1 Tainted: G W 2.6.32-24-generic #42-Ubuntu
[63122.135641] Call Trace:
[63122.135648] [<c014c4a2>] warn_slowpath_common+0x72/0xa0
[63122.135657] [<f8147f39>] ? ___ieee80211_stop_tx_ba_session+0x89/0x90 [mac80211]
[63122.135666] [<f8147f39>] ? ___ieee80211_stop_tx_ba_session+0x89/0x90 [mac80211]
[63122.135672] [<fae21560>] ? iwl_mac_ampdu_action+0x0/0xd0 [iwlagn]
[63122.135676] [<c014c4ea>] warn_slowpath_null+0x1a/0x20
[63122.135684] [<f8147f39>] ___ieee80211_stop_tx_ba_session+0x89/0x90 [mac80211]
[63122.135693] [<f8148057>] __ieee80211_stop_tx_ba_session+0x57/0x60 [mac80211]
[63122.135702] [<f8147966>] ieee80211_sta_tear_down_BA_sessions+0x26/0x50 [mac80211]
[63122.135714] [<f815a8bf>] ieee80211_reconfig+0x1ff/0x430 [mac80211]
[63122.135718] [<c013f083>] ? finish_task_switch+0x43/0xc0
[63122.135727] [<f814343b>] ieee80211_restart_work+0x1b/0x30 [mac80211]
[63122.135731] [<c016376e>] run_workqueue+0x8e/0x150
[63122.135740] [<f8143420>] ? ieee80211_restart_work+0x0/0x30 [mac80211]
[63122.135743] [<c01638b4>] worker_thread+0x84/0xe0
[63122.135747] [<c0167810>] ? autoremove_wake_function+0x0/0x50
[63122.135750] [<c0163830>] ? worker_thread+0x0/0xe0
[63122.135753] [<c0167584>] kthread+0x74/0x80
[63122.135756] [<c0167510>] ? kthread+0x0/0x80
[63122.135759] [<c0104087>] kernel_thread_helper+0x7/0x10
[63122.135762] ---[ end trace c9a5d574a2e181dc ]---
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-24-generic 2.6.32-24.42
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-24.42-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
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: marko 1492 F.... pulseaudio
/dev/snd/pcmC0D0p: marko 1492 F...m pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xdf000000 irq 22'
Mixer name : 'Nvidia MCP78 HDMI'
Components : 'HDA:111d76b2,103c30f6,00100302 HDA:10de0006,10de0101,00100000'
Controls : 24
Simple ctrls : 13
Date: Fri Sep 10 14:09:29 2010
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=dde38a4e-c8c3-43cc-a665-41c6ae8717e5
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: Hewlett-Packard HP Pavilion dv7 Notebook PC
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-24-generic root=UUID=184394ed-e1ef-47ed-a65d-764aa47740b8 ro quiet splash
ProcEnviron:
PATH=(custom, user)
LANG=de_DE.utf8
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: 12/04/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.23
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 30F4
dmi.board.vendor: Compal
dmi.board.version: 99.90
dmi.chassis.type: 10
dmi.chassis.vendor: Compal
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.23:bd12/04/2008:svnHewlett-Packard:pnHPPaviliondv7NotebookPC:pvrF.23:rvnCompal:rn30F4:rvr99.90:cvnCompal:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv7 Notebook PC
dmi.product.version: F.23
dmi.sys.vendor: Hewlett-Packard
Marko Pflipsen, thank you for reporting this bug and helping make Ubuntu better. This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://
If it remains an issue, could you run the following command from a Terminal (Applications-
apport-collect -p linux <replace-
Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https:/
Thanks in advance.