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Old 05-24-2010, 01:08 PM
Friedrich Delgado
Default Bug#550534: firmware-iwlwifi: possible workaround

Package: firmware-iwlwifi
Version: 0.24
Severity: normal


I've read several bug reports about this and it seems always related
to 11N in some way, so I tried loading the iwlagn module via

modprobe iwlagn 11n_disable50=1

And found that this helps. (On a Lenovo Thinkpad W500 with a 5300AGN
REV=0x24) Of course not being able to use draft 11 is somewhat
unsatisfactory, but at least I get a stable connection this way.

I currently put the following lines

,----[ /etc/modprobe.d/iwlagn-bug ]
# workaround for http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=550534
options iwlagn 11n_disable50=1

into /etc/modprobe.d/iwlagn-bug since it doesn't look like this will
go away soon.

I know that workarounds like this have a tendency to work only for
some people, but maybe this will help others.

Downgrading to the previous firmware was *not* a reliable workaround
for me.

-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'karmic'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-3-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8) (ignored: LC_ALL set to de_DE.utf8)
Shell: /bin/sh linked to /bin/bash

firmware-iwlwifi depends on no packages.

firmware-iwlwifi recommends no packages.

Versions of packages firmware-iwlwifi suggests:
ii initramfs-tools 0.94.4 tools for generating an initramfs
ii linux-image-2.6.32-3-amd64 2.6.32-9 Linux 2.6.32 for 64-bit PCs

-- no debconf information

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