Tuesday, November 14, 2006

IPW2200 on FC6

Sorry, I still haven't written up my full notes on getting Fedora Core 6 running on my Sony Vaio Type T laptop, but one tidbit:

Sometimes when I boot, the initialization of the IPW2200 builtin WLAN interface doesn't happen properly. This symptom is this:


[rdv@localhost ~]$ iwconfig
lo no wireless extensions.

__tmp1804289383 IEEE 802.11g ESSID:"xxxx"
Mode:Managed Frequency:2.462 GHz Access Point: 00:07:40:xx:xx:xx
Bit Rate:54 Mb/s Tx-Power=20 dBm Sensitivity=8/0
Retry limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=62/100 Signal level=-63 dBm Noise level=-85 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:482 Missed beacon:20

eth0 no wireless extensions.

sit0 no wireless extensions.


and networking fails to work. This condition sometimes persists over reboots, it seems, though as far as I can tell it's just a random phenomenon, so I don't know why it would persist.

The solution is:

[root@localhost rdv]# rmmod ipw2200
[root@localhost rdv]# modprobe !$
modprobe ipw2200
[root@localhost rdv]# iwconfig
lo no wireless extensions.

eth0 no wireless extensions.

sit0 no wireless extensions.

eth1 IEEE 802.11g ESSID:"xxxx"
Mode:Managed Frequency:2.462 GHz Access Point: 00:07:40:xx:xx:xx
Bit Rate:54 Mb/s Tx-Power=20 dBm Sensitivity=8/0
Retry limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=67/100 Signal level=-60 dBm Noise level=-86 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:10



Hope this helps somebody; meantime, if any of you know why it's happening and how to stop it from happening, let me know.

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