Ubuntu 15.10 wifi coection but often fails to get internet access

I am ruing ubuntu 15.10 and my Lenovo yoga 2 pro laptop often fails to coect to the Inteet. This happens randomly and could pass several hours before it is able to coect again. The laptop stays coected to the router via WiFi, but no Inteet access. Other laptops and smartphones coect with no problems to the net.

This is the output of ifconfig

Lenovo-Yoga-2-Pro:~$ ifconfig lo Link encap:Loopback locale indirizzo inet:127.0.0.1 Maschera:255.0.0.0 indirizzo inet6: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:809 errors:0 dropped:0 overruns:0 frame:0 TX packets:809 errors:0 dropped:0 overruns:0 carrier:0 collisioni:0 txqueuelen:0 Byte RX:87572 (87.5 KB) Byte TX:87572 (87.5 KB)

wlp1s0 Link encap:Etheet IndirizzoHW 7c:7a:91:a3:fd:63 indirizzo inet:192.168.1.6 Bcast:192.168.1.255 Maschera:255.255.255.0 indirizzo inet6: fe80::7e7a:91ff:fea3:fd63/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:167 errors:0 dropped:0 overruns:0 frame:0 TX packets:403 errors:0 dropped:0 overruns:0 carrier:0 collisioni:0 txqueuelen:1000 Byte RX:14096 (14.0 KB) Byte TX:53883 (53.8 KB)

Thanks for the help.