knorth55のぼんやり日記

制御とかプログラミングとかを勉強している機械系大学生の備忘録です。

ThinkPad T450 cannot detect wifi adaptors

My T450 suddenly could not find wireless devices with lcpci.

$ uname -r
4.2.0-42-generic 

$ lspci -nn | grep -i net
00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection (3) I218-V [8086:15a3] (rev 03)

I upgrade BIOS version, reboot, and press Fn + F2 and now I can use wireless connection.