Problem: During boot, ubuntu blocks for two minutes at the following stages, and wireless ultimately fails.
Waiting for network configuration
Waiting up to 60 seconds for network configuration
Ubuntu 12.10 Server, fresh install
TP-LINK TLWN722N (ath9k_htc module) connected through USB
I installed 12.10 server, and during the installation, there is autoconfiguration of wireless. It worked like a charm for a few boots, and I started to have the above issue. After I made another fresh install of 12.10, wireless worked for a while, then I have the same problem again.
Modules seem to have loaded fine
The interface file looks fine
$ lsmod | grep ath9
ath9k_htc 91402 0
mac80211 539908 1 ath9k_htc
ath9k_common 14055 1 ath9k_htc
ath9k_hw 395218 2 ath9k_htc,ath9k_common
ath 23827 3 ath9k_htc,ath9k_common,ath9k_hw
cfg80211 206566 3 ath9k_htc,mac80211,ath
The workaround I have is eliminate all wait time in /etc/init/failsafe.conf so that the boot does not hang for 2 min. Then I restart the wireless connection with
$ cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
iface lo inet loopback
# The primary network interface
iface wlan0 inet dhcp
in /etc/rc.local. The workaround works fine for now, but I would like to know the root cause of this. Spending an hour and half googling gives me complaints from various people regarding similar issue, but I have not found a satisfactory solution yet. I did not have this problem a few days ago when I used 12.04 server.
service networking restart
I appreciate your help. Thanks.