Date: Tue, 13 Dec 2011 15:26:06 -0600
From: Seth Forshee <seth.forshee@canonical.com>
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Chaoming Li <chaoming_li@realsil.com.cn>,
	linux-wireless@vger.kernel.org
Subject: Re: Problems associating with RTL8188CE
Message-ID: <20111213212606.GB30788@thinkpad-t410> (sfid-20111213_222615_362206_BBA030CF)
References: <20111118225422.GD19138@thinkpad-t410>
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 <20111121181350.GC6736@thinkpad-t410>
 <4ECA99CC.7020008@lwfinger.net>
 <20111121185610.GD6736@thinkpad-t410>
 <4ECB028E.3030809@lwfinger.net>
 <20111122022008.GA17661@thinkpad-t410>
 <20111213194231.GA30788@thinkpad-t410>
 <4EE7B85E.3070802@lwfinger.net>
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On Tue, Dec 13, 2011 at 02:41:02PM -0600, Larry Finger wrote:
> On 12/13/2011 01:42 PM, Seth Forshee wrote:
> >I have another AP that the rtl8192ce doesn't have any problems
> >associating with, so I also captured a trace with wireshark when
> >associating to that AP. I didn't see much that differed except that the
> >probe response frame with the problematic AP is about 350 bytes longer
> >(due to additional information elements).
> 
> The extra IE entries must be the clue.
> 
> >Something else that I noticed is that with the problematic AP, inactive
> >power save seems to kick in shortly afer sending the
> >probe/authentication requests. I wondered if this might be behind the
> >issues, but loading the module with ips=0 makes no difference.
> >
> >Any suggestions on what might be going wrong or next steps for
> >debugging?
> 
> With ips=0, all power save should be eliminated. Please take the two
> capture files, and filter all but the probe and probe response
> frames. I'll try to find some time to analyze them.

The capture files are available at:

http://people.canonical.com/~sforshee/rtl8188ce/

Thanks,
Seth