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Re: My wireless network connection disappears



Dear Sverre,

At Fri, 5 Sep 2008 08:14:14 -0600,
Sverre Froyen wrote:
> 
> Hi,
> 
> Recently, my wireless network connection will go down occasionally (seemingly 
> at random).  When it happens, ifconfig iwi0 reports:
> 
> iwi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         ssid "" nwkey *****
>         powersave off
>         address: 00:0e:35:38:b0:33
>         media: IEEE802.11 autoselect
>         status: no network
>         inet 192.168.2.5 netmask 0xffffff00 broadcast 192.168.2.255
>         inet6 fe80::20e:35ff:fe38:b033%iwi0 prefixlen 64 scopeid 0x2
> 
> Doing the ifconfig iwi0 down / up dance will restore the connection:
> 
> iwi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         ssid fesk nwkey *****
>         powersave off
>         bssid 00:12:17:60:ba:43 chan 6
>         address: 00:0e:35:38:b0:33
>         media: IEEE802.11 autoselect (OFDM36)
>         status: active
>         inet 192.168.2.5 netmask 0xffffff00 broadcast 192.168.2.255
>         inet6 fe80::20e:35ff:fe38:b033%iwi0 prefixlen 64 scopeid 0x2
> 
> I cannot be certain of the dates but it seems like it started happening with 
> current within the last 30 days.  Is anyone else experiencing this?  I'm 
> asking because I realize, of course, that the problem could be external.
> 
> This is a Thinkpad T42 with i386 current and I'm using wpa_suppliant.

I have a Thinkpad X61 with a iwn0. It happens to me also.

I have started to run wpa_cli. There I see disconnect events. The
time between the disconnect events seems random. But whenever I had
it running the reassociations will timeout and then succeed on the 7th
try. So there must be something magic about number 7 after all... ;-)

11:30:03.770: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
11:30:05.792: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:30:15.900: Authentication with 00:40:10:10:00:03 timed out.
11:30:17.921: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:30:27.018: Authentication with 00:40:10:10:00:03 timed out.
11:30:29.040: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:30:39.147: Authentication with 00:40:10:10:00:03 timed out.
11:30:40.159: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:30:50.266: Authentication with 00:40:10:10:00:03 timed out.
11:30:52.287: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:31:02.395: Authentication with 00:40:10:10:00:03 timed out.
11:31:03.406: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:31:13.514: Authentication with 00:40:10:10:00:03 timed out.
11:31:15.535: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:31:15.535: Associated with 00:40:10:10:00:03
11:31:15.535: WPA: Key negotiation completed with 00:40:10:10:00:03 [PTK=TKIP 
GTK=TKIP]
11:31:15.535: CTRL-EVENT-CONNECTED - Connection to 00:40:10:10:00:03 completed 
(reauth) [id=1 id_str=]
11:31:27.665: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
11:31:28.675: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:31:38.783: Authentication with 00:40:10:10:00:03 timed out.
11:31:40.804: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:31:50.912: Authentication with 00:40:10:10:00:03 timed out.
11:31:51.923: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:32:02.030: Authentication with 00:40:10:10:00:03 timed out.
11:32:04.052: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:32:14.160: Authentication with 00:40:10:10:00:03 timed out.
11:32:15.170: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:32:25.278: Authentication with 00:40:10:10:00:03 timed out.
11:32:27.299: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:32:37.407: Authentication with 00:40:10:10:00:03 timed out.
11:32:38.418: Trying to associate with 00:40:10:10:00:03 (SSID='dd-wrt' 
freq=2437 MHz)
11:32:38.418: Associated with 00:40:10:10:00:03
11:32:38.418: WPA: Key negotiation completed with 00:40:10:10:00:03 [PTK=TKIP 
GTK=TKIP]

My kernel is from evening of Aug 4, 2008, so sources are likely from
that day also.

Best regards,

Marko

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