从开始连接到最后的log为：
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) starting connection 'Tenda_218790'
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 1 of 5 (Device Prepare) scheduled...
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 1 of 5 (Device Prepare) started...
May 20 22:12:01 localhost NetworkManager[906]: <info> (enp3s0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 2 of 5 (Device Configure) scheduled...
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 1 of 5 (Device Prepare) complete.
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 2 of 5 (Device Configure) starting...
May 20 22:12:01 localhost NetworkManager[906]: <info> (enp3s0): device state change: prepare -> config (reason 'none') [40 50 0]
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0/wireless): access point 'Tenda_218790' has security, but secrets are required.
May 20 22:12:01 localhost NetworkManager[906]: <info> (enp3s0): device state change: config -> need-auth (reason 'none') [50 60 0]
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 2 of 5 (Device Configure) complete.
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 1 of 5 (Device Prepare) scheduled...
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 1 of 5 (Device Prepare) started...
May 20 22:12:01 localhost NetworkManager[906]: <info> (enp3s0): device state change: need-auth -> prepare (reason 'none') [60 40 0]
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 2 of 5 (Device Configure) scheduled...
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 1 of 5 (Device Prepare) complete.
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 2 of 5 (Device Configure) starting...
May 20 22:12:01 localhost NetworkManager[906]: <info> (enp3s0): device state change: prepare -> config (reason 'none') [40 50 0]
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0/wireless): connection 'Tenda_218790' has security, and secrets exist. No new secrets needed.
May 20 22:12:01 localhost NetworkManager[906]: <info> Config: added 'ssid' value 'Tenda_218790'
May 20 22:12:01 localhost NetworkManager[906]: <info> Config: added 'scan_ssid' value '1'
May 20 22:12:01 localhost NetworkManager[906]: <info> Config: added 'key_mgmt' value 'WPA-PSK'
May 20 22:12:01 localhost NetworkManager[906]: <info> Config: added 'psk' value '<omitted>'
May 20 22:12:01 localhost NetworkManager[906]: <info> Config: added 'proto' value 'WPA RSN'
May 20 22:12:01 localhost NetworkManager[906]: <info> Activation (enp3s0) Stage 2 of 5 (Device Configure) complete.
May 20 22:12:01 localhost NetworkManager[906]: <info> Config: set interface ap_scan to 1
May 20 22:12:01 localhost NetworkManager[906]: <info> (enp3s0): supplicant interface state: inactive -> scanning
May 20 22:12:03 localhost wpa_supplicant: ioctl[SIOCSIWAP]: Device or resource busy
May 20 22:12:03 localhost NetworkManager[906]: <info> (enp3s0): supplicant interface state: scanning -> associating
May 20 22:12:13 localhost NetworkManager[906]: <warn> Connection disconnected (reason -3)
May 20 22:12:13 localhost NetworkManager[906]: <info> (enp3s0): supplicant interface state: associating -> disconnected
May 20 22:12:13 localhost NetworkManager[906]: <info> (enp3s0): supplicant interface state: disconnected -> scanning
May 20 22:12:27 localhost NetworkManager[906]: <warn> Activation (enp3s0/wireless): association took too long.
May 20 22:12:27 localhost NetworkManager[906]: <info> (enp3s0): device state change: config -> need-auth (reason 'none') [50 60 0]
May 20 22:12:27 localhost NetworkManager[906]: <warn> Activation (enp3s0/wireless): asking for new secrets
May 20 22:12:27 localhost NetworkManager[906]: <warn> Couldn't disconnect supplicant interface: This interface is not connected.
May 20 22:12:27 localhost NetworkManager[906]: <warn> Couldn't disconnect supplicant interface: This interface is not connected.
May 20 22:12:31 localhost NetworkManager[906]: <warn> User canceled the secrets request.
May 20 22:12:31 localhost NetworkManager[906]: <info> (enp3s0): device state change: need-auth -> failed (reason 'no-secrets') [60 120 7]
May 20 22:12:31 localhost NetworkManager[906]: <warn> Activation (enp3s0) failed for connection 'Tenda_218790'
May 20 22:12:31 localhost NetworkManager[906]: <info> (enp3s0): device state change: failed -> disconnected (reason 'none') [120 30 0]
May 20 22:12:31 localhost NetworkManager[906]: <info> (enp3s0): deactivating device (reason 'none') [0]
May 20 22:12:31 localhost NetworkManager[906]: <warn> Couldn't disconnect supplicant interface: This interface is not connected.
该如何修改阿

你这个问题解决了没啊，我用opensuse 13.2 也出现了和你一样的问题。
BCM43142。

估计是无线网卡的驱动问题

我第一次连的时候也遇到过， 重启一下就好了

我是Fedora社区的，欢迎@Fedora801 解决问题