I also have this problem (only noticed it in Gutsy, but FGLRX hasn't let
me suspend since Dapper or Edgy)... I can sometimes fix it with:
sudo killall `ps aux | grep ipw3945d | grep -v grep | awk '{print $11}'`
sudo rm /var/run/ipw3945*.pid
sudo rm /var/run/dhclient.eth1.pid
sudo rmmod ipw3945
sleep 2
sudo modprobe ipw3945
sudo /etc/init.d/dbus restart
If that doesn't work, I try rmmod ipw3945, /etc/init.d/dbus stop, hit the
wireless kill switch (Fn+F2 on my Inspiron), then bring ipw3945 and dbus back
up.
It's pretty annoying... a proper fix would be nice.
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Wireless (ipw3945) doesn't work after suspend/hibernation
https://bugs.launchpad.net/bugs/114490
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