2012-01-17 18:53:16

by MR

[permalink] [raw]
Subject: Re: ath9k crash 3.2-rc7

> > Turned out I got lucky previous time.
> >
> >This time I went to the other AP, spent some time under it, roamed
back
> and
> >
> >WiFi didn't disappear. I didn't even lose XMPP connections in the
> process.
> >
> >
> >Maybe debug printing (which prints a lot) managed to introduce some
> extra
> > delays into some race condition.
> >
> > I hope I will have time to test this more on Monday. Tomorrow I will
be
>
> > using WiFi less than usual.
>
>Now I went a few time back and forth, spent a lot of time under
previously
>
> risky AP and still there are no problems..
>
> I wonder if maybe a congested AP could help.. But unclear how to obtain
> that quickly and reliably.

Even with debugging off WiFi works reliably across different conditions.




2012-01-18 05:32:26

by Mohammed Shafi

[permalink] [raw]
Subject: Re: ath9k crash 3.2-rc7

2012/1/18 MR <[email protected]>:
> ?> ?> Turned out I got lucky previous time.
> ?> ?>
> ?> >This time I went to the other AP, spent some time under it, roamed
> back
> ?> and
> ?> ?>
> ?> ?>WiFi didn't disappear. I didn't even lose XMPP connections in the
> ?> process.
> ?> ?>
> ?> ?>
> ?> ?>Maybe debug printing (which prints a lot) managed to introduce some
> ?> extra
> ?> ?> delays into some race condition.
> ?> ?>
> ?> > I hope I will have time to test this more on Monday. Tomorrow I will
> be
> ?>
> ?> ?> using WiFi less than usual.
> ?>
> ?>Now I went a few time back and forth, spent a lot of time under
> previously
> ?>
> ?> risky AP and still there are no problems..
> ?>
> ?> I wonder if maybe a congested AP could help.. But unclear how to obtain
> ?> that quickly and reliably.
>
> Even with debugging off WiFi works reliably across different conditions.
>

you can test frequent roaming with the attached script. also you can
test roaming, after enabling ASPM(attached script, courtesy: Luis)
please completely read and understand
http://linuxwireless.org/en/users/Documentation/ASPM
incorrect tweak may cause hardware issues.

--
shafi


Attachments:
roam-script.sh (1.96 kB)
enable-aspm (7.14 kB)
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