Re: RTL 8187b - naughty behaviour

[Rogerio Luz Coelho <rogluz.news@gmail.com>]

2010/4/23 Gábor Stefanik <netrolller.3d@gmail.com>:
> 2010/4/22 Rogerio Luz Coelho <rogluz.news@gmail.com>:
>> 2010/4/11 Gábor Stefanik <netrolller.3d@gmail.com>:
>>> 2010/4/10 Rogerio Luz Coelho <rogluz.news@gmail.com>:
>>>> 2010/4/10 Gábor Stefanik <netrolller.3d@gmail.com>:
>>>>> On Sat, Apr 10, 2010 at 2:07 PM, Rogerio Luz Coelho
>>>>> <rogluz.news@gmail.com> wrote:
>>>>>> 2010/4/3 Rogerio Luz Coelho <rogluz.news@gmail.com>:
>>>>>>> 2010/4/3 Larry Finger <Larry.Finger@lwfinger.net>:
>>>>>>>> On 04/03/2010 11:49 AM, Rogerio Luz Coelho wrote:
>>>>>>>>>
>>>>>>>>> I have a MS-Win7 instalation on this Laptop and it works 100% even at
>>>>>>>>> longer distances than you report,even with walls in between.
>>>>>>>>>
>>>>>>>>> Will do the tcpperf test as soon as I get home. There are other with
>>>>>>>>> the same problem with my exact chip here in Brasil , that is because
>>>>>>>>> one of our leading Laptop vendors uses this config.
>>>>>>>>
>>>>>>>> What is the exact make and model of the device? It might be difficult
>>>>>>>> for me to get one in the US, but one of the rtl8187 developers lives in
>>>>>>>> Brazil. He should be able to find one.
>>>>>>>>
>>>>>>>
>>>>>>> It愀 a POSITIVO R430L - Core 2 Duo 4GB RAM
>>>>>>>
>>>>>>>
>>>>>>>>> Does it matter that the USB port used in this setting is a connected
>>>>>>>>> to a USB HUB and then to the mother board?
>>>>>>>>
>>>>>>>> Is the hub passive, or is it powered? If the hub is good and not
>>>>>>>> underpowered, it should be OK.
>>>>>>>>
>>>>>>>>> More details and tests will come your way in a day or two ... will
>>>>>>>>> reinstall Mandriva 2010 and do some tests with older kernels.
>>>>>>>>
>>>>>>>> If you can download an openSUSE 11.2 Live CD and burn it, you would not
>>>>>>>> even have to do an installation. That one has a 2.6.31 kernel.
>>>>>>>>
>>>>>>>> Larry
>>>>>>
>>>>>>
>>>>>> Downloaded and installed:
>>>>>>
>>>>>> OpenSuse 11.2 - LiveCD  result: Gnome Network-Manager tells me there
>>>>>> is connection but no ping resposes, Firefox complains about conections
>>>>>> errors.
>>>>>>
>>>>>> Mandriva 2010.0 (kernel 2.6.31-12) result: concection comes and goes
>>>>>> ... generally the first boot of the day connects, but it lasts less
>>>>>> than 5min. The error code is the "deauthentication by local reason
>>>>>> (reason=3) again.
>>>>>>
>>>>>> MS-Win7 : connects and is as fast as ever.
>>>>>>
>>>>>> -- Any other suggestions?
>>>>>>
>>>>>> Rogerio
>>>>>>
>>>>>> PS: Will give OpenSuse a HD install atempt and will try to debug the
>>>>>> Mandriva for some time, future tries involve Debian Stable (old
>>>>>> kernel) and some Fedora (any suggestions?) and the NDISwrapper drive
>>>>>> in a Debian Testing (the Distro I need working)
>>>>>
>>>>> Hi,
>>>>>
>>>>> Please also test Realtek's official r8187b driver. If possible, please
>>>>> do an mmiotrace on that driver.
>>>>
>>>> Ok ... The official Realtek is only for 32bits systems right ? ( At
>>>> least the guys at Realtek support told me so... ) and this mmiotrace
>>>> can be accomplished how? Is it a program, a command, a debug message
>>>> in some form? Sorry, as I said earlier I am NOT a kernel programer.
>>>>
>>>> Rogerio
>>>>
>>>
>>> You need to enable MMIO tracing support in your kernel config, and
>>> recompile your kernel (assuming it is not enabled already - distros
>>> usually disable the entire tracing framework by default). Then:
>>> -Mount debugfs to /debug. (Usually it is mounted by default, but some
>>> distros like to mount it @ /sys/kernel/debug instead - remount it to
>>> /debug.)
>>> -"echo mmiotrace > /debug/tracing/current_tracer"
>>> -"cat /debug/tracing/trace_pipe >  trace.txt &" - at this point, tracing begins.
>>> -Load r8187b and connect.
>>> -"echo "Driver loaded!" > /debug/tracing/trace_marker"
>>> -"echo nop > /debug/tracing/current_tracer" - tracing ends here.
>>>
>>> Do this for rtl8187 as well.
>>> After each trace, check if "grep -i lost trace.txt" returns anything.
>>> If it does, enlarge the trace buffer and retry:
>>> -"cat /debug/tracing/trace_buffer_kb"
>>> -"echo [BUFSIZE] > /debug/tracing/trace_buffer_kb", where [BUFSIZE] is
>>> recommended to be about twice the number returned by the previous
>>> command.
>>
>> I installed a vanilla kernel 2.6.32.11 , config to rum mmio , but my
>> rtl818x modules are loaded by default and the modprobe -r command
>> doesn't seem to change this ... any ideas ?
>>
>> Rogerio
>
> Did you build rtl8187 as a module? Otherwise modprobe -r can do nothing.
>

Will check this ... but it seems to be a module ...If I have rtl8187
and rtl8187b in the blacklist will I be able to load them manually?

Rogerio



>>
>>
>>>
>>> Repeat these steps until the "lost events" warning disappears. Once
>>> you find the right BUFSIZE for one driver, you can use the same size
>>> for the other one too.
>>>
>>> Hth,
>>> Gábor
>>>
>>> --
>>> Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)
>>>
>>
>
>
>
> --
> Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)
>