[2008.9] Wifi very unreliable

[vale]

thats cool ... wish it would work here too,

but my experience is different. doesn't matter if i try @university @home
@public places or @highly secured wlans with project partners.

wlan gets stuck after a few minutes of inactivity. i don't know why. 

how can i stop this power thing over wlan? perhaps that is the problem ...

i like my freerunner, but sometimes its frustrating not beeing able to rely
on basic things as wlan is.

i hope its getting better soon :)

vale




Matthias Apitz wrote:
> 
> El día Thursday, October 02, 2008 a las 04:39:01PM +0100, Alastair Johnson
> escribió:
> 
>> vale wrote:
>> > add a sleep 500 to your loop ;)  
> 
> I run this script for an hour or so:
> 
> root at om-gta02:~# cat wifi.sh 
> #!/bin/sh
> cd /tmp
> while true; do
> 
>     rm 1M
>     wget http://www.unixarea.de/1M
>     date ; echo -n "now sleeping 300 sec ... "
>     sleep 300
>     echo awaked
> 
> done
> 
> and there has been no problem all this time; as well ifconfig does not
> show any error packets:
> 
> root at om-gta02:~# ifconfig eth0
> eth0      Link encap:Ethernet  HWaddr 00:12:CF:8E:FC:5F  
>           inet addr:192.168.2.100  Bcast:192.168.2.255 Mask:255.255.255.0
>           inet6 addr: fe80::212:cfff:fe8e:fc5f/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:302728 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:131532 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:454345265 (433.2 MiB)  TX bytes:10145574 (9.6 MiB)
> 
> and if you compare the RX/TX values with those from the last post:
> 
>           RX packets:285483 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:121870 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:431367301 (411.3 MiB)  TX bytes:9439240 (9.0 MiB)
> 
> you see that moving from office to my home, i.e. from one AP to another,
> I did not rebooted; I just ifdow / ifup with my script the eth0
> interface;
> 
>> > 
>> > which image / kernel are you using?
>> 
>> You should perhaps ask what AP he's using, or whether he has the power 
>> management enabled on the wifi. Some APs apparently get upset by power 
>> managed devices, and the Freerunner enables power management of the wifi 
>> by default to preserve battery. My wrt54g certainly gets upset from time 
>> to time if I connect with the freerunner, sometimes refusing to talk to 
>> _anything_ over wifi afterwards until rebooted.
> 
> my AP at home is a SMCWBR14-G2 EU one; regardless of the FR already in
> the past sometime this get stuck and needs a power-cycle; not during the
> test today;
> 
> the actual iwconfig values are:
> 
> # iwconfig eth0
> eth0      AR6000 802.11g  ESSID:"tarara"  
>           Mode:Managed  Frequency:2.442 GHz  Access Point:
> 00:13:F7:0D:08:48   
>           Bit Rate=54 Mb/s   Tx-Power=15 dBm   Sensitivity=0/3  
>           Retry:on   
>           Encryption key:XXXXXXXXXXXXX  Security mode:open
>           Power Management:off
>           Link Quality:207/94  Signal level:-144 dBm  Noise level:-96 dBm
>           Rx invalid nwid:0  Rx invalid crypt:1487  Rx invalid frag:0
>           Tx excessive retries:55  Invalid misc:0   Missed beacon:64
> 
> HIH
> 
> 	matthias
> 
> -- 
> Matthias Apitz
> Manager Technical Support - OCLC GmbH
> Gruenwalder Weg 28g - 82041 Oberhaching - Germany
> t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
> e <matthias.apitz at oclc.org> - w http://www.oclc.org/
> http://www.UnixArea.de/
> b http://gurucubano.blogspot.com/
> A computer is like an air conditioner, it stops working when you open
> Windows
> Una computadora es como aire acondicionado, deja de funcionar si abres
> Windows
> 
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