Message-ID: <522DE452.1090804@rempel-privat.de> (sfid-20130909_170811_098476_517415D9)
Date: Mon, 09 Sep 2013 17:08:02 +0200
From: Oleksij Rempel <linux@rempel-privat.de>
MIME-Version: 1.0
To: Larry Finger <Larry.Finger@lwfinger.net>
CC: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>,
	Timothy Rundle <tgrundlesr@gmail.com>,
	linux-wireless@vger.kernel.org
Subject: Re: RTL8192CU continually reconnecting
References: <CALa3VXYo1yTuDr22M7AUcp0WLQszzdMSJczRgmD57uPd_68vWQ@mail.gmail.com> <522D054B.5060205@lwfinger.net> <522DD856.7050309@ilande.co.uk> <522DE1BE.6070904@lwfinger.net>
In-Reply-To: <522DE1BE.6070904@lwfinger.net>
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Sender: linux-wireless-owner@vger.kernel.org

Am 09.09.2013 16:57, schrieb Larry Finger:
> On 09/09/2013 09:16 AM, Mark Cave-Ayland wrote:
>> On 09/09/13 00:16, Larry Finger wrote:
>>
>>> On 09/08/2013 06:53 AM, Timothy Rundle wrote:
>>>> My TL-WN821N with a RTL8192CU chipsets fails to stay connected. It
>>>> appears to be disconnecting every 5-10 seconds. Since the issue
>>>> happens with the mainline kernel, the downstream maintainer ask me to
>>>> post here. Here is a section of my kernel log:
>>>
>>> This problem has been reported before; however, I cannot duplicate it on
>>> my openSUSE KDE system that controls the wireless using NetworkManager.
>>
>> Yes, this sounds like exactly the same problem that I reported a
>> couple of weeks
>> ago. Note that I see the issue invoking wpa_supplicant manually rather
>> than
>> using NetworkManager, so I don't think that this is part of the problem.
>>
>> I can also clarify that if I remove *all* entries from
>> wpa_supplicant.conf
>> except for the one AP I'm trying to associate with, then I can
>> generally get an
>> initial association within about 30-60s. However I still repeatedly see
>> drop-outs every 30s or so.
>
> I think your user space is exactly the problem. As I am writing this, my
> device, which lsusb reports as "ID 7392:7811 Edimax Technology Co., Ltd
> EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS]" has been up for
> a little over 20 hours. During that time, there have been 23
> deauthentications for reason 7, but 0 of the "connection to AP lost"
> variety.
>
> My system is running version 1.1 of wpa_supplicant, 0.9.6.4 of
> NetworkManager, and 0.9.0.7 of the KDE applet.
>
> None of my wireless connections are made automatically. When I select a
> particular AP from the KDE applet, it is roughly 2 seconds until the
> interface has gotten an IP and reports its state as connected.
>
> I will switch my system from NM to manual control to see what happens.
>
> Larry

Just in case:
There can be some usb issue. At least i need to fight right now with 
some of them on ath9k_htc.

-- 
Regards,
Oleksij