Ubuntu solves the problem of WiFi not connecting

Recently installed the latest version of Ubuntu15.04 to Dell notebooks, found that WiFi can be recognized, but after entering the password but unable to connect to the network.

Find the data found that the original driver is installed correctly, but the notebook needs to press FN+F2 to open the wireless WiFi connection.

command line terminal input:lshw-c Network

*-network
Description:ethernet interface
product:rtl8101e/rtl8102e PCI Express Fast Ethernet Controller
Vendor:realtek Semiconductor Co., Ltd.
Physical id:0
Bus info: [Email protected]:02:00.0
Logical Name:eth0
version:07
serial:34:17:eb:86:74:2c
size:10mbit/s
capacity:100mbit/s
Width:64 bits
Clock:33mhz
Capabilities:bus_master cap_list Ethernet Physical TP mii 10BT 10bt-fd 100BT 100bt-fd autonegotiation
Configuration:autonegotiation=on broadcast=yes driver=r8169 Driverversion=2.3lk-napi duplex=half firmware= rtl8106e-1_0.0.1 06/29/12 latency=0 link=no multicast=yes port=mii speed=10mbit/s
resources:irq:48 ioport:4000 (size=256) memory:d2200000-d2200fff memory:d2000000-d2003fff
*-network DISABLE
Description:wireless interface
Product:wireless 3160
Vendor:intel Corporation
Physical id:0
Bus info: [Email protected]:03:00.0
Logical Name:wlan0
version:83
serial:d0:7e:35:83:42:49
Width:64 bits
Clock:33mhz
Capabilities:bus_master Cap_list Ethernet Physical Wireless
Configuration:broadcast=yes Driver=iwlwifi driverversion=3.19.0-15-generic firmware=25.15.12.0 ip=192.168.1.110 Latency=0 link=yes Multicast=yes wireless=ieee 802.11abgn
Resources:irq:51 MEMORY:D2100000-D2101FFF
Warning:output may is incomplete or inaccurate, you should run the program as Super-user.

You can see that the second network is the disable state, press the FN+F2 key and run the command again to find that the disable state disappears, and then restart the system to connect to the WiFi normally.

The process is simple, leaving notes and maybe helping others.

Ubuntu solves the problem of WiFi not connecting