Fedora 22を搭載したノートパソコン「Lenovo s110」があります。 Wi-Fi接続がランダムに切断され、自動的に接続されません。
$ dmesg
...
[15066.713308] wlp2s0: authenticate with 78:44:76:58:69:ef
[15066.742924] wlp2s0: send auth to 78:44:76:58:69:ef (try 1/3)
[15066.844039] wlp2s0: send auth to 78:44:76:58:69:ef (try 2/3)
[15066.945045] wlp2s0: send auth to 78:44:76:58:69:ef (try 3/3)
[15067.046071] wlp2s0: authentication with 78:44:76:58:69:ef timed out
[15068.554725] wlp2s0: authenticate with 78:44:76:58:69:ef
[15068.585268] wlp2s0: send auth to 78:44:76:58:69:ef (try 1/3)
[15068.686190] wlp2s0: send auth to 78:44:76:58:69:ef (try 2/3)
[15068.787205] wlp2s0: send auth to 78:44:76:58:69:ef (try 3/3)
[15068.888242] wlp2s0: authentication with 78:44:76:58:69:ef timed out
[15070.831181] wlp2s0: authenticate with 78:44:76:58:69:ef
[15070.864327] wlp2s0: send auth to 78:44:76:58:69:ef (try 1/3)
[15070.965439] wlp2s0: send auth to 78:44:76:58:69:ef (try 2/3)
[15071.066467] wlp2s0: send auth to 78:44:76:58:69:ef (try 3/3)
[15071.167458] wlp2s0: authentication with 78:44:76:58:69:ef timed out
[15080.948778] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
手動で接続すると（ホームWi-Fiネットワークを選択して[接続]をクリック）、次のように接続します。
$ dmesg
...
[15556.678847] wlp2s0: authenticate with 78:44:76:58:69:ef
[15556.695394] wlp2s0: send auth to 78:44:76:58:69:ef (try 1/3)
[15556.696906] wlp2s0: authenticated
[15556.698328] wlp2s0: associate with 78:44:76:58:69:ef (try 1/3)
[15556.702316] wlp2s0: RX AssocResp from 78:44:76:58:69:ef (capab=0x411 status=0 aid=2)
[15556.702833] wlp2s0: associated
[15556.702895] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready
ネットワークコントローラ：Realtek Semiconductor Co.、Ltd。 RTL8188CE 802.11b/g/n WiFiアダプタ(rev 01)
私は何をすべきかわかりません。少なくともアドバイスをしてください。