Re: dropping WLan connection wioth NM 0.6.2

[Dan Williams <dcbw redhat com>]

On Mon, 2006-09-11 at 23:28 +0200, Dieter Steiner wrote:
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> please CC me, i'm not subscribed, thank you.
> 
> Hello, when using NM 0.6.2 (ubuntu 6.06.1)
> i observed a strange behavior that happens when using the NM and Wlan,
> but doesn't happen when i connect to the Wlan without NM (through
> /etc/network/interfaces and wifi-radar)
> 
> it randomly drops the line in an interval of 5-20 seconds.

NetworkManager performs wireless scans at various intervals, starting at
20 seconds and backing off to 120 seconds.  What driver and kernel are
you using, and if you're using an Intel Pro/Wireless card, what version
of the ieee80211 stack?  (Driver can be determined by Connection
Information from right-clicking on the applet)

Dan

> please check the screen shots i made:
> 
> without network manager (121 kb)
> http://stud3.tuwien.ac.at/~e0326004/nm/no_network_manager.png
> 
> with network manager (382 kb)
> http://stud3.tuwien.ac.at/~e0326004/nm/mitnetworkmanager.png
> 
> load on the line was about 2-2.5 MB/s, so about 15-20 MBits. As you can
> see, with the network manager the line constantly drops (wlan activity
> led goes off, too), with direct connection the line stays constant for
> hours.
> 
> It only happens if the line is in "strong" use. Activities that won't
> use much bandwith (like ssh) don't show that behavior.
> 
> Card is an ipw2200, for testing the access point was about 50 cm distant
> to the laptop, no other wireless users.
> 
> Dieter Steiner
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