echo "options ath9k nohwcrypt=1" | sudo tee /etc/modprobe.d/ath9k.conf
options ath9k nohwcrypt=1

sudo modprobe -rfv ath9k
rmmod /lib/modules/3.5.0-37-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko
rmmod /lib/modules/3.5.0-37-generic/kernel/net/mac80211/mac80211.ko
rmmod /lib/modules/3.5.0-37-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_common.ko
rmmod /lib/modules/3.5.0-37-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_hw.ko
rmmod /lib/modules/3.5.0-37-generic/kernel/drivers/net/wireless/ath/ath.ko
rmmod /lib/modules/3.5.0-37-generic/kernel/net/wireless/cfg80211.ko

 sudo modprobe -v ath9k
insmod /lib/modules/3.5.0-37-generic/kernel/net/wireless/cfg80211.ko
insmod /lib/modules/3.5.0-37-generic/kernel/drivers/net/wireless/ath/ath.ko
insmod /lib/modules/3.5.0-37-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_hw.ko
insmod /lib/modules/3.5.0-37-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_common.ko
insmod /lib/modules/3.5.0-37-generic/kernel/net/mac80211/mac80211.ko
insmod /lib/modules/3.5.0-37-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko nohwcrypt=1