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From: Stephen Montgomery-Smith <stephen@missouri.edu>
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To: kevin <stringflow@gmail.com>
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Cc: Sam Leffler <sam@freebsd.org>, freebsd-current@freebsd.org
Subject: Re: About iwn firmware
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kevin wrote:
> On Sat, Jul 11, 2009 at 1:18 AM, Sam Leffler <sam@freebsd.org> wrote:
> 
>> kevin wrote:
>>
>>> Hi,
>>>   I notice iwn's firmware hasn't been updated for a long time.Is there any
>>> plan to import newer version iwn firmware ? current version is
>>> iwlwifi-4965-ucode-4.44.17 in the source tree, while latest version is
>>> iwlwifi-4965-ucode-228.61.2.24.
>>>
>>> http://www.intellinuxwireless.org/?n=downloads&f=ucodes_4965
>>>
>>>
>> Not sure why you want newer firmware.  If it's for newer chip support then
>> that requires driver changes and is non-trivial.
>>
>>   Sam
>>
>> iwn driver works well when system up.but it is not so robust.it will stop
> transfer data and throw some errors in these conditions:
> 1 . mount nfs via wireless network,if i transfer a lot of data.it may stop
> receiving data after some time.
> 2 . wireless network is busy, then some one reboot the wireless AP.it may
> throw some errors and stop working.
> 3 . Find wireless network works slow and switch to Ethernet,.if  try
> /etc/rc.d/netif restart, it may throw some errors and stop working.
> 
> 
> all these are fixed by reboot system(reload iwn and iwnfw  dose not work at
> most time). i also find iwn driver printe a lot of microcode error related
> messages when it failed(not easy to reproduce it).
> 
> No official Change Log, i just notice the *description *in gentoo
> bug#202818.

I have had the same experiences.  They are not that frequent, so I can 
live with it, but if someone were to fix it, that would be great.