From: Johannes Berg <johannes@sipsolutions.net>
To: Cesar Eduardo Barros <cesarb@cesarb.net>
Cc: linux-wireless@vger.kernel.org, ilw@linux.intel.com
Subject: Re: iwlwifi: GF was set with SGI:SISO
Date: Thu, 31 May 2012 09:50:50 +0200 [thread overview]
Message-ID: <1338450650.4531.6.camel@jlt3.sipsolutions.net> (raw)
In-Reply-To: <4FC17BA8.2050606@cesarb.net> (sfid-20120527_030308_122290_604E4002)
Hi Cesar,
On Sat, 2012-05-26 at 21:56 -0300, Cesar Eduardo Barros wrote:
> I have twice now seen a problem with iwlwifi where rate control gets
> "stuck" (the tx bitrate as shown by "iw dev wlan0 link" does not change
> anymore), while spamming the kernel log with "iwlwifi 0000:03:00.0: GF
> was set with SGI:SISO".
>
> The first time, it was stuck at 48 Mbit/s. This time, it got stuck at 81
> Mbit/s MCS 4 40MHz (long GI) [*]. But this time, I went to
> /sys/kernel/debug/ieee80211/phy0/netdev:wlan0/stations and got a copy of
> the rate_* files.
>
> What I believe is happening is the following scenario:
[...]
Unfortunately, I don't have any idea right away right now what's going
on. Would you file a bug on bugzilla.intellinuxwireless.org so we can
track it and help you better? We may want to reproduce it and/or ask you
to collect some tracing information and it's easier to collect all that
in a bug report.
Thanks,
johannes
next prev parent reply other threads:[~2012-05-31 7:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-27 0:56 iwlwifi: GF was set with SGI:SISO Cesar Eduardo Barros
2012-05-31 7:50 ` Johannes Berg [this message]
2012-05-31 10:43 ` Cesar Eduardo Barros
2012-05-31 11:15 ` Johannes Berg
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