centos 7 连接WIFI连接不上

[空格丶白]

初步接触centos7,网络连接参考了很多的帖子，没有成功，因为对这块没有一个去全面的了解，也不知道错在那里，下边是参考一个帖子连接wifi的详细情况，请各大佬给点操作意见；
[root@localhost tang]# dmesg | grep firmware
[ 4.739133] iwlwifi 0000:02:00.0: loaded firmware version 25.30.13.0 op_mode iwlmvm
[root@localhost tang]# iw dev
phy#0
Interface wlp2s0
ifindex 3
wdev 0x1
addr ac:7b:a1:11:8d:70
type managed
[root@localhost tang]# iw wlp2s0 link
Not connected.
[root@localhost tang]# iw wlp2s0 scan | grep SSID
command failed: Device or resource busy (-16)
[root@localhost tang]# ip link show wlp2s0
3: wlp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DORMANT qlen 1000
link/ether ac:7b:a1:11:8d:70 brd ff:ff:ff:ff:ff:ff
[root@localhost tang]# ip addr show wlp2s0
3: wlp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
[root@localhost tang]# wpa_supplicant -B -i wlp2s0 -c <(wpa_passphrase "TMYG""tm2931888")
Successfully initialized wpa_supplicant
dhclient wlp2s0
^C
[root@localhost tang]# ip addr show wlp2s0
3: wlp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN qlen 1000
link/ether ac:7b:a1:11:8d:70 brd ff:ff:ff:ff:ff:ff
inet6 fe80::ae7b:a1ff:fe11:8d70/64 scope link
valid_lft forever preferred_lft forever
[root@localhost tang]#

[空格丶白]

有人给点意见么，好找个方向排除下

[空格丶白]

搞定了。.。。。。。。。。

[LubinLew]

多试试, 靠自己能解决大部分问题

[青提绿茶]

怎么弄好的？