I bought a new laptop, removed the internal hard drive from my old laptop and put it into the new one. Ubuntu 16 in general works fine but it does not recognize the Wi-Fi network adapter in the new computer. Connecting to the internet with an Ethernet cable works fine. Neither the network manager nor the network settings seem to be aware that the laptop has a wireless antenna.
Dual booting in Windows shows the wireless hardware works fine. Booting Ubuntu from a USB stick also finds the wireless and connects without problems. From the Ubuntu wireless troubleshooting, if I use
lspci -v, it finds the network controller, device name is “Intel Dual BandWireless-AC 3168 802.11 ac 1x1 WiFi + BT 4.0 Combo Adapter”, but
nmcli dev shows only the Ethernet controller but nothing Wi-Fi related.
How can I tell Ubuntu to look through the hardware, find the Wi-Fi network controller, and if needed load the drivers for it?