Bug 646082

Summary:	iwlagn: Received BA when not expected .. Regression on .36
Product:	[Fedora] Fedora	Reporter:	Jóhann B. Guðmundsson <johannbg>
Component:	kernel	Assignee:	Stanislaw Gruszka <sgruszka>
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	14	CC:	aquini, dougsland, gansalmon, itamar, jonathan, kernel-maint, linville, madhu.chinakonda, sgruszka, stanislav.polasek, wey-yi.w.guy
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Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-01-12 13:16:40 UTC	Type:	---
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Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Jóhann B. Guðmundsson 2010-10-24 10:10:49 UTC

Description of problem:

We seemed to be hitting a regression with .36

Dmesg is flooded with: iwlagn : Received BA when not expected

Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)

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

2.6.36-1.fc15.x86_64

How reproducible:

Always 

Steps to Reproduce:
1. Boot and wait establish a wireless connection.
2.
3.
  
Actual results:

The above

Expected results:

No iwlagn errors 

Additional info:

Comment 1 Jóhann B. Guðmundsson 2010-10-24 10:23:41 UTC

Further digging reveals that this is most likely a uCode firmware bug that seems to be affecting a series of Intel cards so I guess 4965 can be added to that list. 

See https://bugzilla.kernel.org/show_bug.cgi?id=16691 for details 

This is the firmware I got installed.

/lib/firmware/iwlwifi-4965-1.ucode
/lib/firmware/iwlwifi-4965-2.ucode

iwlwifi-4965-2.ucode is what's being shipped in iwlwifi-4965-ucode-228.61.2.24 which is the latest available for this card on http://intellinuxwireless.org/?n=Downloads

Comment 2 Stanislaw Gruszka 2010-12-01 09:55:51 UTC

If this cause some functional problem, this workaround should help:

echo "options iwlagn 11n_disable50=1 11n_disable=1" >> /etc/modprobe.d/iwlwifi.conf

Comment 3 Stanislaw Gruszka 2011-01-12 13:16:40 UTC


*** This bug has been marked as a duplicate of bug 648732 ***