tail -100 /var/log/syslog | grep wlan
Feb 7 17:44:51 localhost klogd: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Feb 7 17:44:51 localhost klogd: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Feb 7 17:44:51 localhost ifplugd(wlan0)[21126]: ifplugd 0.28 initializing.
Feb 7 17:44:51 localhost ifplugd(wlan0)[21126]: Using interface wlan0/00:1E:64:18:B6:C0
Feb 7 17:44:51 localhost ifplugd(wlan0)[21126]: Using detection mode: wireless extension
Feb 7 17:44:51 localhost ifplugd(wlan0)[21126]: Initialization complete, link beat not detected.
Feb 7 17:49:16 localhost ifplugd(wlan0)[21126]: Exiting.
Feb 7 17:49:17 localhost klogd: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Feb 7 17:49:17 localhost klogd: ADDRCONF(NETDEV_UP): wlan0: link is not ready
Feb 7 17:49:17 localhost ifplugd(wlan0)[22393]: ifplugd 0.28 initializing.
Feb 7 17:49:17 localhost ifplugd(wlan0)[22393]: Using interface wlan0/00:1E:64:18:B6:C0
Feb 7 17:49:17 localhost ifplugd(wlan0)[22393]: Using detection mode: wireless extension
Feb 7 17:49:17 localhost ifplugd(wlan0)[22393]: Initialization complete, link beat not detected.
The line marked in red color, say that there is a problem related to detecting the radio link,
you should have found something like:
Feb 8 00:35:03 dv1710 ifplugd(wlan0)[14186]: Link beat detected.
Feb 8 00:35:04 dv1710 ifplugd(wlan0)[14186]: Executing '/etc/ifplugd/ifplugd.action wlan0 up'.
look like some driver/card specifc problem, and right now don't know the solution, some search is needed
around this specific issue.
Now I have to leave the computer, sorry, may be someone else can add some info here.
try to google arond: "Intel 1000-N Initialization complete, link beat not detected."
See you, AS