Hi,

I run Scientific Linux 5.2 with kernel 2.6.18-92.1.6.el5 on a
Fujitsu-Siemens Amilo Si 1520.  I have the Intel PRO/Wireless 3945 ABG
card.  I noticed that the original installed configuration came with
mac80211 and support for iwl4965, but it seemed to have nothing for 3945.

# lsmod | grep iwl
iwl4965               105921  0
mac80211              117453  1 iwl4965
compat                  7617  2 iwl4965,mac80211

So I followed the instructions here:
http://www.intellinuxwireless.org/?p=iwlwifi&n=howto-iwlwifi
to install the iwl driver for 3945, but when it came time to compile
iwlwifi-1.2.25, which I tried as root, I got a lot of errors.

After that I installed the older dkms-ipw3945 using yum following the
instructions at:
http://wiki.centos.org/HowTos/Laptops/Wireless?highlight=(3945)
but it too didn't work with the following symptoms.

The wireless appears to see that there is a network around, but doesn't
manage to connect to it if I run NetworkManager and select the wireless
network.
# iwlist eth1 scan
eth1      Scan completed :
          Cell 01 - Address: 00:1A:6C:3C:47:F0
                    ESSID:"resfac"
                    Protocol:IEEE 802.11bg
                    Mode:Master
                    Channel:8
                    Encryption key:off
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
                              48 Mb/s; 54 Mb/s
                    Quality=38/100  Signal level=-86 dBm  Noise level=-86 dBm
                    Extra: Last beacon: 198ms ago

I'm not sure if it's relevant but if I boot up with wireless on and the
ethernet plugged in I get a whole bunch of
"hub 1-0:1.0: connect-debounce failed, port 6 disabled"
in the dmesg.  This doesn't happen with when the ethernet is unplugged but
the wireless doesn't work then either.

I would be very grateful if someone would suggest a way forward.

Thanks,
Mark



--
Mark Dalton
Research Associate in Physics
University of Virginia
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