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Re: ath9k problems

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On Sat, Sep 20, 2008 at 9:17 PM, Howard Chu <hyc@xxxxxxxxx> wrote:
> With the 2.6.27-rc6 kernel I find that my wireless connection dies after a
> few minutes. Using nm-applet I have to disable wireless and re-enable it
> before I can re-establish a session (using WPA).

Yeah, you need this patch:
http://marc.info/?l=linux-wireless&m=122163541519736&w=2

> I tried pulling the wireless-testing branch and found it behaved strangely
> as well - within about 30 seconds of idle time it would die. But, it would
> usually immediately begin to reconnect (and succeed). My logs were full of
> "ForceXPAon: 0" messages which I found were from ath9_hw_reset(), which were
> all being called from set_channel, during the scan that took place when the
> card was not associated with the AP. It typically occurred every 30-35
> seconds.

I'm sure the ath9k guys can be more informative about what
'ForceXPAon: 0' is all about, but wireless-testing is pretty outdated
now. Strange, too, because it seems that even Linus' tree has newer
code than wireless-testing.

> I also found that if I kept a ping session to my wifi router running, then
> the wireless connection would not die, it would operate normally.
>
> It seems that it all worked fine in 2.6.27-rc4...

Yeah, did a git-bisect on the issue. Again, see the above link to get
the patch for it. :)

- Steven
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