Desconecta Wi-Fi com muita frequência

Question

Eu tenho o laptop "Lenovo s110" com o Fedora 22. O Wi-Fi desconecta-se aleatoriamente e não é possível fazer a autoconexão.

$ 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

E quando me conecto manualmente (escolha minha rede Wi-Fi doméstica e clique em "conectar"), ele se conecta:

$ 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

Controlador de rede: Realtek Semiconductor Co., Ltd. Adaptador WiFi 802.11b / g / n RTL8188CE (rev 01)

Eu não tenho ideia do que fazer. Por favor, me dê pelo menos algum conselho.