Re: Fwd: [Gnewsense-dev] poor wireless performance and sources.list

[fxzhang@ict.ac.cn]

in fact we are almost sure that AMD CS5536 usb has something strange on
Yeeloong's motherboard. Since it is originally made for AMD geode,
companion with Loongson might expose some subtle issues.

We have 7 USB2.0 ports, 4 from AMD CS5536(the southbridge),3 from a NEC
usb chip. We have tested that an external 8187B wifi works well when
connected to  NEC port(the one near to ethernet connector), but not to
5536 ports.

We are stilling tracing the root cause.
> Graziano Sorbaioli wrote:
>> fxzhang@ict.ac.cn ha scritto:
>>> What is the normal signal strength reported?
>>
>>> If very low, probably the antenna is not connected correctly(some test
>>> machine might have such problem), you can try to open the case to
>>> check:
>>> it is in the right part of palm rest; remove the 4 screws in the back,
>>> then you  can remove the palm-test(don't pull it too far away because
>>> the
>>> touchpad is connected) and find the antenna, it should be connected to
>>> the
>>> 'main' connector, not the 'aux').
>>
>>> The wifi do have some potential connection bug, but the signal strength
>>> is
>>> basically ok.
>>
>>
>> I opened up my yeeloong.
>> The wifi antenna is connected correctly to "main", I can connect to my
>> wifi network, the signal is good (about 65/70%) but I can't send or
>> receive packets if I don't near the wifi router.
>
> One thing you could try is to use a ENCORE ENUWI-G2 USB Wifi adapter
> (like $15); it uses the same RTL8187b chipset as the internal wifi. On
> our initial test machine it had much better range than the internal wifi
> (I'll check the wiring to see if that's why now that I know about that
> issue).
>
> --
> Daniel JB Clark   | Sys Admin, Free Software Foundation
> pobox.com/~dclark | http://www.fsf.org/about/staff#danny
>
>