krishnaroona@krishnaroona:~$ sudo rmmod -f rtl8192ce
krishnaroona@krishnaroona:~$ sudo rfkill unblock all
krishnaroona@krishnaroona:~$ sudo modprobe rtl8192ce
krishnaroona@krishnaroona:~$ rfkill lisr
Usage:	rfkill [options] command
Options:
	--version	show version (0.5-1ubuntu1 (Ubuntu))
Commands:
	help
	event
	list [IDENTIFIER]
	block IDENTIFIER
	unblock IDENTIFIER
where IDENTIFIER is the index no. of an rfkill switch or one of:
	<idx> all wifi wlan bluetooth uwb ultrawideband wimax wwan gps fm nfc
krishnaroona@krishnaroona:~$ rfkill list
0: hp-wifi: Wireless LAN
	Soft blocked: yes
	Hard blocked: no
3: phy2: Wireless LAN