On Tuesday 16 December 2008 05:17:13 Larry Finger wrote:
>
> No matter how hard I try, I cannot duplicate these results. They may have been a
> fluke, but I do have another problem fr you to ponder.
>
> If I run the 'ping -f -i 0.2' to my file server in one window, and start a
> kernel compilation with the source on an NFS volume on that same server, p54usb
> will hang. I managed to capture the whole process with kismet running on a third
> computer and have analyzed it with wireshark. I can find the last transmission
> from the server, but no ACK. The next transmission from the p54 is more than 26
> sec later when it sends an 802.11 Probe request. The dmesg log just shows that
> there was a disconnection, and a reconnection attempt.
In which mode is p54? ad-hoc / station? is radio_enabled flag cleared?
do you see anything else than probe request?
(because probe requests are marked as "no cancel" and won't be
delayed / cancelled).
Can you bring back the receiver if you change the mode?
(e.g station to ad-hoc and then back to station,
or ibss to station and bak to ibss again...
and don't forget to do a ifconfig wlanX up all the time...)
do you see if statistic counters in /sys/kernel/debug/ieee80211/phyX/statistics/
increase (especially: FCSErros, RTSCount and RTSFailure), or is the
the noise-level in iwconfig still updated?
> Any idea as to why the receiver would go off-line, but the transmitter is still
> working?
Not really. normally its the other way around and the transmitter is dead.
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
