Frequently getting disconnected from wireless

[hummerbliss]

I frequently get disconnected from wireless connection even though signal strength is excellent. No obvious information in dmesg. Some times the whole system freezes - which is probably related to wireless as it doesn't happen when I am connected wired. The problem is frequent and reproducible. Please let me know any more information is needed (hopefully appreport attached the relevant information).

ProblemType: Bug
Architecture: i386
Date: Sun Nov 22 23:21:23 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/yelp
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
NonfreeKernelModules: fglrx wl
Package: yelp 2.28.0-0ubuntu2
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: yelp
Uname: Linux 2.6.31-14-generic i686

[Philip Muškovac (yofel)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately, we can't fix it without more information.

Please run the following command which will attach necessary information:

apport-collect 486869

Bear in mind that you may need to install the python-launchpadlib package from the universe repository with 'sudo apt-get install python-launchpadlib'. Additionally, when prompted to give apport-collect permissions for Launchpad you will need to give it at least the ability to "Change Non-Private" data as it will be adding information to your bug report.

If you are using an older release or cannot use apport please at least add the following information (pay attention to lspci's additional options):
First run the following commands:
1) uname -a > uname-a.log
2) dmesg > dmesg.log
3) sudo lspci -vvnn > lspci-vvnn.log
4) cat /proc/version_signature > version.log
then attach the files separately to the bug report (not pasted into comments or tar/zip-ed).

For your reference, the full description of procedures for kernel-related bug reports is available at https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies. Thanks in advance!

[hummerbliss (hummerbliss)]

AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: saikiran 2740 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xd6500000 irq 16'
   Mixer name : 'Analog Devices AD1984A'
   Components : 'HDA:11d4194a,103c30ee,00100400 HDA:11c11040,103c1378,00100200'
   Controls : 22
   Simple ctrls : 14
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=e23b8a3a-6bfd-4aed-8dc6-5e3fca888b7a
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: Hewlett-Packard HP Compaq 6735b
NonfreeKernelModules: fglrx wl
Package: linux (not installed)
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.31-14-generic root=UUID=ad581ace-2017-4661-9ea3-1adf0bbc8cf6 ro quiet splash
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 LANGUAGE=en_US.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-14-generic N/A
 linux-firmware 1.24
RfKill:
 0: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 09/14/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68GTT Ver. F.11
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 30E3
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 96.22
dmi.chassis.asset.tag: CNU9015F69
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68GTTVer.F.11:bd09/14/2009:svnHewlett-Packard:pnHPCompaq6735b:pvrF.11:rvnHewlett-Packard:rn30E3:rvrKBCVersion96.22:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq 6735b
dmi.product.version: F.11
dmi.sys.vendor: Hewlett-Packard

[hummerbliss (hummerbliss)]

I am not sure if it helps, but when I get disconnected, I do sudo /etc/init.d/network-manager restart and it gets connected back. Trying to connect by clicking on the network applet doesnt help so have to restart.

[hummerbliss (hummerbliss)]

Anyone willing to help me to debug this ?

[hummerbliss (hummerbliss)]

Started seeing these messages recently when the wireless gets disconnected

[15586.782165] eth1: Michael MIC verification failed for MSDU from 00:24:b2:ad:f4:c6 keyidx=0
[15586.782197] key[0] alg=TKIP key_set=1 tx_pn=000000006ba1 rx_pn=000000007003 replays=669 icv_errors=0 local_mic_failures=1
[15586.782205] : TKIP stats from module: Ucast
[15594.240807] eth1: Michael MIC verification failed for MSDU from 00:24:b2:ad:f4:c6 keyidx=0
[15594.240845] key[0] alg=TKIP key_set=1 tx_pn=000000006c03 rx_pn=000000007057 replays=675 icv_errors=0 local_mic_failures=2
[15594.240852] : TKIP stats from module: Ucast

Its 9.10 and still fighting with basic functionality such as networking!

[hummerbliss (hummerbliss)]

Its been more than 60 days since I reported this bug and am still facing the problem. Have you guys at least attempted to report this upstream ?

[Jeremy Foshee (jeremyfoshee)]

hummerbliss,
      have you attempted to test this against the latest kernel? If not, please do so and let me know the result. Also, in the event that it is not resolved with the latest Ubuntu kernel, then please also test the latest upstream kernel. I look forward to the results of your testing.

Regards,

-JFo

[hummerbliss (hummerbliss)]

Hi Jeremy,

Tested with latest Ubuntu kernel (git://kernel.ubuntu.com/ubuntu/ubuntu-karmic.git, 891645fa08de3185361ea2382669240143b6659c, 2.6.31-18.56) according to instructions http://blog.avirtualhome.com/2009/11/03/how-to-compile-a-kernel-for-ubuntu-karmic/ and the problem can be reproduced with no obvious info in dmesg.

Regarding testing with upstream kernel - can I just use the config from the running kernel to compile the upstream kernel ? How do I go about compiling the non free modules (broadcom drivers in my case) - any pointer/doc would be helpful.

[hummerbliss (hummerbliss)]

Ok, I see that there is a ppa for mainline kernel (http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.32/) downloaded the debs and looks like non free module compilation failed

dpkg -i linux-image-2.6.32-020632-generic_2.6.32-020632_i386.deb
Selecting previously deselected package linux-image-2.6.32-020632-generic.
(Reading database ... 328918 files and directories currently installed.)
Unpacking linux-image-2.6.32-020632-generic (from linux-image-2.6.32-020632-generic_2.6.32-020632_i386.deb) ...
Done.
Setting up linux-image-2.6.32-020632-generic (2.6.32-020632) ...
Running depmod.
update-initramfs: Generating /boot/initrd.img-2.6.32-020632-generic
Running postinst hook script /usr/sbin/update-grub.
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.32-020632-generic
Found initrd image: /boot/initrd.img-2.6.32-020632-generic
Found linux image: /boot/vmlinuz-2.6.31-18-core2
Found initrd image: /boot/initrd.img-2.6.31-18-core2
Found linux image: /boot/vmlinuz-2.6.31-17-generic
Found initrd image: /boot/initrd.img-2.6.31-17-generic
Found linux image: /boot/vmlinuz-2.6.31-16-generic
Found initrd image: /boot/initrd.img-2.6.31-16-generic
Found linux image: /boot/vmlinuz-2.6.31-15-generic
Found initrd image: /boot/initrd.img-2.6.31-15-generic
Found linux image: /boot/vmlinuz-2.6.31-14-generic
Found initrd image: /boot/initrd.img-2.6.31-14-generic
Found memtest86+ image: /memtest86+.bin
done
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/dkms
 * Running DKMS auto installation service for kernel 2.6.32-020632-generic
 * bcmwl (5.10.91.9+bdcom)... bcmwl (5.10.91.9+bdcom): Installing module.
.......(bad exit status: 10)
  Build failed. Installation skipped.
                                                                         [fail]
 * fglrx (8.660)... fglrx (8.660): Installing module.
.......(bad exit status: 10)
  Build failed. Installation skipped.
                                                                         [fail]
 * vboxdrv (3.1.2)... vboxdrv (3.1.2): Already installed on this kernel.
                                                                         [ OK ]
 * vboxnetadp (3.1.2)... vboxnetadp (3.1.2): Already installed on this kernel.
                                                                         [ OK ]
 * vboxnetflt (3.1.2)... vboxnetflt (3.1.2): Already installed on this kernel.
                                                                         [ OK ]
run-parts: executing /etc/kernel/postinst.d/nvidia-common

[hummerbliss (hummerbliss)]

The bug is still present with all updates as of today incase anyone cares.

[Jeremy Foshee (jeremyfoshee)]

Hi hummerbliss,

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.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[hummerbliss (hummerbliss)]

Hello Jeremy

1. If you have read my previous comments you would see that I did try with upstream kernels with no luck
2. Today I switched to Ubuntu 10.4 RC hoping that it got fixed - NO LUCK.
3. This problem is not just specific to me but atleast two others in our office.

[Rohit (jug-ece)]

yes. I am facing the same problem starting the last few weeks. It used to work flawlessly until I got some regular updates. After installing the updates, the internet started to keep dropping pretty often and it kinda gets frustrating. I tried using wicd, it gave a much better performance, but seems like wicd doesnt work with unsecured n/w and hence becomes difficult to access internet in public places. I reported this problem in the forums also, people kept suggesting all kind of stuffs but nothing seems to be working.

[Brad Figg (brad-figg)]

This bug was filed against a series that is no longer supported and so is being marked as Won't Fix. If this issue still exists in a supported series, please file a new bug.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.