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From: Simple W <simplew8@gmail.com>
Date: Wed, 2 May 2012 10:09:15 +0100
Message-ID: <CAKVccoXK=ktW-xp1=TjZxdbQ77_fwZ1fLiPa3xT_NGLwFta_nQ@mail.gmail.com> (sfid-20120502_110940_935070_70FB851E)
Subject: Re: rtl8192ce makes keyboard repeat and mouse freeze
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Forest Bond <forest@alittletooquiet.net>,
	wireless <linux-wireless@vger.kernel.org>
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Sender: linux-wireless-owner@vger.kernel.org

2012/5/1 Larry Finger <Larry.Finger@lwfinger.net>:
> On 05/01/2012 03:42 PM, simple w8 wrote:
>>
>> 2012/5/1 Larry Finger<Larry.Finger@lwfinger.net>:
>>>
>>> On 05/01/2012 08:36 AM, simple w8 wrote:
>>>>
>>>>
>>>>
>>>> SEams that was your last fix for rtl8192
>>>>
>>>>
>>>> http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=commit;h=eb641120479de7ee703fabb5e6ee0ec7947474ba
>>>> ? that reduced the wifi force, thus detecting less wifi networks.
>>>>
>>>> Running without that "fix" the notebook detects more wifi networks,
>>>> seams like the antenna have more force.
>>>
>>>
>>>
>>> You keep talking about "antenna force". What does that mean?
>>>
>>> That patch keeps your device from running forever at a maximum of 1 Mbps
>>> by
>>> adjusting the initial gain of the RX amplifier. You may reverse it if you
>>> want so that you can detect more APs when you scan; however, most people
>>> prefer to get better performance from the device. That patch will not be
>>> reversed.
>>
>>
>> Could you please clarify a litle more about the why and the patch fix?
>
>
> Before that patch, when the device scanned after the connection was up and
> running, it set the gain very low. When that happened, the receiver failed
> to see any info coming from the AP. The AP would retry several times, and
> then cut its transmit rate to 1 Mbps. That rate would stay until rtl8192xe
> was unloaded and reloaded. To me, that is a lot bigger problem that what you
> are seeing, which is why I will not change it back!
>
> Larry
>

Ok i have been using only kernel-3.3.4 (with compat wireless) and i
have been seeing a strange behaviour, it starts by detecting for
example 6 wifi networks and passed some time the 6 wifi become 1, and
passed a litle longer NetworkManager reaches the point of not showing
any Wifi network.
Then i restart wpa_supplicant and i get back 3 wifi networks.

With kernel-3.3.1 i dont remember this ever happened...