Wifi unstable with WandBoard Quad rev B1

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Wifi unstable with WandBoard Quad rev B1

Postby alex85 » Sat Nov 01, 2014 9:47 am

I have installed WB Q/DL: Ubuntu 12.04.3 armel from wandboard site. My board is revision B1 but the wifi signal is unstable. Sometimes i loss the wifi signal if I try to ping from my laptop and I can't use putty properly.

Here there is an example of latency:

Risposta da 192.168.1.7: byte=32 durata=53ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=61ms TTL=64
Richiesta scaduta.
Risposta da 192.168.1.7: byte=32 durata=37ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=46ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=89ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=67ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=69ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=4ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=93ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=108ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=117ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=30ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=38ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=46ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=61ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=68ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=79ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=94ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=100ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=105ms TTL=64
Risposta da 192.168.1.7: byte=32 durata=117ms TTL=64

Statistiche Ping per 192.168.1.7:
Pacchetti: Trasmessi = 1580, Ricevuti = 1567,
Persi = 13 (0% persi),
Tempo approssimativo percorsi andata/ritorno in millisecondi:
Minimo = 4ms, Massimo = 1005ms, Medio = 72ms

And after 2 min again:

Esecuzione di Ping 192.168.1.7 con 32 byte di dati:
Risposta da 192.168.1.2: Host di destinazione non raggiungibile.
Risposta da 192.168.1.2: Host di destinazione non raggiungibile.
Risposta da 192.168.1.2: Host di destinazione non raggiungibile.
Risposta da 192.168.1.2: Host di destinazione non raggiungibile.

Statistiche Ping per 192.168.1.7:
Pacchetti: Trasmessi = 4, Ricevuti = 4,
Persi = 0 (0% persi),

In this second time the host is unrechable but the packets transmitted are 4 and received 4, 0 loss.
The strange is that if I try to ping from my wandboard to laptop immediately the ping from my laptop to wandboard return ok.

With this state I can't use the board with wifi because is not reliable.
Someone can help me please?




Thank you in advance.
alex85
 
Posts: 2
Joined: Sat Nov 01, 2014 9:26 am

Re: Wifi unstable with WandBoard Quad rev B1

Postby Tapani » Fri Nov 07, 2014 10:55 am

What kind of WiFi antenna are you using?

How do you configure your WiFi? Ubuntu does not like manual configuration (you end up fighting with avahi / network manager / whatever )
Tapani
 
Posts: 712
Joined: Tue Aug 27, 2013 8:32 am

Re: Wifi unstable with WandBoard Quad rev B1

Postby alex85 » Mon Nov 10, 2014 9:45 pm

I'm using the original WandBoard Wifi antenna. I have configured the wifi with the automatic procedure on Ubuntu (I've clicked the icon on the top right of the desktop)
alex85
 
Posts: 2
Joined: Sat Nov 01, 2014 9:26 am


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