I have just installed Ubuntu 14.04 on my new T470 and I cannot connect to the internet, can't see the wifi networks and wired Ethernet. I couldn't solve the problem with the suggestions on the internet.
$ ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1184 (1.1 KB) TX bytes:1184 (1.1 KB)
$ lspci -knn | grep Net -A2
04:00.0 Network controller [0280]: Intel Corporation Device [8086:24fd] (rev 78)
Subsystem: Intel Corporation Device [8086:1010]