The wifi LED keeps blinking in my Ubunut 12.10 laptop (Intel chips) when it is connected. To disable it, I have changed the led_mode to 0. Here is how I did it:
1) Change to root user.
jchen@JC:~$ sudo -i
[sudo] password for jchen:
2) Find out the wifi module.
root@JC:~# lsmod | grep iw
iwlwifi 348584 0
mac80211 461203 1 iwlwifi
cfg80211 175574 2 iwlwifi,mac80211
3) Change the led_mode to 1.
root@JC:~# vi /etc/modprobe.d/iwlwifi.conf
# iwlwifi will dyamically load either iwldvm or iwlmvm depending on the
# microcode file installed on the system. When removing iwlwifi, first
# remove the iwl?vm module and then iwlwifi.
remove iwlwifi
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod)
&& /sbin/modprobe -r mac80211
options iwlwifi led_mode=1
4) Reload the wifi module
root@JC:~# modprobe -r iwlwifi && modprobe iwlwifi
root@JC:~# exit
logout
jchen@JC:~$
Jackie Chen's IT Workshop 