memo@smartseals:~$ rfkill unblock all
Can't open RFKILL control device: Permission denied
memo@smartseals:~$ sudo rfkill unblock all
[sudo] password for memo: 
memo@smartseals:~$ rfkill list 
0: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
1: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
memo@smartseals:~$ ip link set wlp2s0 up
RTNETLINK answers: Operation not permitted
memo@smartseals:~$ sudo ip link set wlp2s0 up
memo@smartseals:~$ nmcli radio wifi on
memo@smartseals:~$ nmcli radio
WIFI-HW  WIFI      WWAN-HW  WWAN    
enabled  disabled  enabled  enabled 
memo@smartseals:~$