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On 2011-01-01T20:48:16+00:00 James wrote:

Description of problem:

Roughly every 5-20 minutes or so (give or take) my Dell Adamo 13 (black)
will hard lock.

The last messages in the syslog before the reboot (consistently) are:

Jan  1 14:03:33 emma kernel: [  350.187460] iwlagn 0000:04:00.0: BA scd_flow 0 
does not match txq_id 10
Jan  1 14:03:35 emma kernel: [  352.917520] iwlagn 0000:04:00.0: low ack count 
detected, restart firmware
Jan  1 14:03:35 emma kernel: [  352.917531] iwlagn 0000:04:00.0: On demand 
firmware reload
Jan  1 14:03:35 emma kernel: [  352.972646] iwlagn 0000:04:00.0: Stopping AGG 
while state not ON or starting
Jan  1 14:03:35 emma kernel: [  352.972656] iwlagn 0000:04:00.0: queue number 
out of range: 0, must be 10 to 19
Jan  1 14:04:42 emma kernel: imklog 4.6.3, log source = /proc/kmsg started.
[boot continues as normal]

Version-Release number of selected component (if applicable):

2.6.35.10-74.fc14.x86_64

How reproducible:

Inconsistent (I believe without better evidence that it's a faulty
response to some kind of palpable change in the wifi environment), but
when it happens it always has the same/similar log messages (or
sometimes the "AGG" line is cut-off halfway)

I'm willing to run a kdump kernel until I have a legit trace for this
(having to randomly reboot my primary machine every 5 minutes makes this
a priority for me), but will need instructions.


Steps to Reproduce:
1. Boot System
2. Wait.
3. Randomly loose the code you were working on for the last couple minutes.


Actual results:

Crashy fun time.


Expected results:

Boring work.


Additional info:

I'm a Leo.

Wait, did you mean additional info about the problem? In that case, if
audio is playing it replays the last couple seconds of buffer on a loop
until I button-for-7s the machine---audio is not always playing,
however.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/53

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On 2011-01-03T09:43:08+00:00 Stanislaw wrote:

There are two patches that may help:
https://bugzilla.kernel.org/attachment.cgi?id=38502
http://marc.info/?l=linux-wireless&m=129310430012942&w=2

I will prepare test kernel with them ...

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/54

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On 2011-01-03T15:33:57+00:00 Stanislaw wrote:

Please test both these kernels and share your impression:
http://koji.fedoraproject.org/koji/taskinfo?taskID=2697824
http://koji.fedoraproject.org/koji/taskinfo?taskID=2698228

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/55

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On 2011-01-05T11:27:44+00:00 Kari wrote:

I'm affected by the same problem, installing kernel from
http://koji.fedoraproject.org/koji/taskinfo?taskID=2698228 now.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/56

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On 2011-01-05T11:42:39+00:00 Kari wrote:

This kernel fixes the problem for me (didn't test the other build).

[khautio@kha ~]$ uname -a
Linux kha 2.6.35.10-75.irq.fc14.i686 #1 SMP Mon Jan 3 14:49:06 UTC 2011 i686 
i686 i386 GNU/Linux

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/57

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On 2011-01-05T12:17:53+00:00 James wrote:

The irq build didn't fix my issue, I'm trying the low_ack kernel now.

Jan  4 16:01:07 emma kernel: [    0.000000] Linux version 
2.6.35.10-75.irq.fc14.x86_64 ([email protected]) (gcc 
version 4.5.1 20100924 (Red Hat 4.5.1-4) (GCC) ) #1 SMP Mon Jan 3 14:34:56 UTC 
2011
[...]
Jan  4 17:37:37 emma kernel: [ 5810.255040] iwlagn 0000:04:00.0: 
iwlagn_tx_agg_start on ra = 00:25:9c:d2:4d:a0 tid = 0
Jan  4 17:37:44 emma kernel: [ 5816.994056] iwlagn 0000:04:00.0: BA scd_flow 0 
does not match txq_id 10
Jan  4 17:37:45 emma kernel: [ 5818.095818] iwlagn 0000:04:00.0: BA scd_flow 0 
does not match txq_id 10
Jan  4 17:37:46 emma kernel: [ 5819.064689] iwlagn 0000:04:00.0: low ack count 
detected, restart firmware
Jan  4 17:37:46 emma kernel: [ 5819.064701] iwlagn 0000:04:00.0: On demand 
firmware reload
Jan  4 17:37:46 emma kernel: [ 5819.119974] iwlagn 0000:04:00.0: Stopping AGG 
while state not ON or starting
Jan  4 17:37:46 emma kernel: [ 5819.119986] iwlagn 0000:04:00.0: queue number 
out of range: 0, must be 10 to 19
Jan  4 17:38:01 emma kernel: [ 5834.658906] iwlagn 0000:04:00.0: 
iwlagn_tx_agg_start on ra = 00:25:9c:d2:4d:a0 tid = 0
Jan  4 17:38:04 emma kernel: [ 5837.085846] iwlagn 0000:04:00.0: low ack count 
detected, restart firmware
Jan  4 17:38:04 emma kernel: [ 5837.085853] iwlagn 0000:04:00.0: On demand 
firmware reload
Jan  4 17:38:04 emma kernel: [ 5837.136528] iwlagn 0000:04:00.0: Stopping AGG 
while state not ON or starting
Jan  4 17:38:04 emma kernel: [ 5837.136535] iwlagn 0000:04:00.0: queue number 
out of range: 0, must be 10 to 19
Jan  4 17:42:51 emma kernel: imklog 4.6.3, log source = /proc/kmsg started.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/58

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On 2011-01-07T09:50:00+00:00 Stanislaw wrote:

There is other similar bug 667459 report, that point the hard lock problem is 
on mac80211 layer. Please test this kernel and report back:
http://koji.fedoraproject.org/koji/taskinfo?taskID=2704610

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/59

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On 2011-01-12T12:47:58+00:00 Stanislaw wrote:

James, any news on comment 6 (also you can try official build with patch
http://koji.fedoraproject.org/koji/buildinfo?buildID=213595 if you wish).

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/60

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On 2011-01-12T13:16:29+00:00 James wrote:

I haven't tested the comment 6 build yet---it will be another week
before I can, unfortunately---but I did see the same problem with the
low_ack kernel.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/61

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On 2011-01-12T13:48:53+00:00 Stanislaw wrote:

Please save packages you need from comment 6 as koji can remove these
files automaticly. With low_ack kernel at least :low ack count detected,
restart firmware" should gone.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/62

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On 2011-01-12T13:55:43+00:00 James wrote:

Got it, thanks.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/63

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On 2011-01-12T14:01:32+00:00 Kari wrote:

I'm going to test comment 7 build now

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/64

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On 2011-02-11T13:52:49+00:00 Stanislaw wrote:

Kari and/or James could you test driver from upstream with some my patches:
https://bugzilla.redhat.com/show_bug.cgi?id=648732#c21

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/65

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On 2011-05-09T19:28:53+00:00 Stanislaw wrote:

Posted to fedora and stable.

http://lists.fedoraproject.org/pipermail/kernel/2011-May/003091.html

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/70

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On 2011-05-16T04:46:11+00:00 Fedora wrote:

kernel-2.6.38.6-27.fc15 has been submitted as an update for Fedora 15.
https://admin.fedoraproject.org/updates/kernel-2.6.38.6-27.fc15

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/73

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On 2011-05-17T05:36:54+00:00 Fedora wrote:

Package kernel-2.6.38.6-27.fc15:
* should fix your issue,
* was pushed to the Fedora 15 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing kernel-2.6.38.6-27.fc15'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/kernel-2.6.38.6-27.fc15
then log in and leave karma (feedback).

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/74

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On 2011-05-19T05:10:45+00:00 Fedora wrote:

kernel-2.6.38.6-27.fc15 has been pushed to the Fedora 15 stable
repository.  If problems still persist, please make note of it in this
bug report.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/75

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On 2011-08-17T17:38:29+00:00 Fedora wrote:

kernel-2.6.35.14-95.fc14 has been submitted as an update for Fedora 14.
https://admin.fedoraproject.org/updates/kernel-2.6.35.14-95.fc14

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/81

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On 2011-08-23T04:36:47+00:00 Fedora wrote:

kernel-2.6.35.14-95.fc14 has been pushed to the Fedora 14 stable
repository.  If problems still persist, please make note of it in this
bug report.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/575492/comments/83


** Changed in: linux (Fedora)
       Status: Unknown => Fix Released

** Changed in: linux (Fedora)
   Importance: Unknown => Critical

** Bug watch added: Red Hat Bugzilla #648732
   https://bugzilla.redhat.com/show_bug.cgi?id=648732

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