My SONY VAIO Laptop with a fresh UBUNTU 18.04 install cant seem to find the Wi-fi Adapter, found this info on the Adapter:
*-network descripción: Ethernet interface producto: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller fabricante: Realtek Semiconductor Co., Ltd. id físico: 0 información del bus: pci@0000:0e:00.0 nombre lógico: enp14s0 versión: 0c serie: 3c:07:71:53:c2:03 tamaño: 100Mbit/s capacidad: 1Gbit/s anchura: 64 bits reloj: 33MHz capacidades: bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuración: autonegotiation=on broadcast=yes driver=r8169 duplex=full firmware=rtl8168g-2_0.0.1 02/06/13 ip=192.168.0.167 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s recursos: irq:18 ioport:2000(size=256) memoria:c0500000-c0500fff memoria:c0400000-c0403fff AVISO: la salida puede ser incompleta o imprecisa, debería ejecutar este programa como superusuario. 31 Answer
Made it simple, after all, when installing Ubuntu you have to check "Install other firm software..." it will ask you for a password for "Unsecure Boot".
When rebooting, it will send you to a blue-screen asking for permission for "Unsecure Boot". There you will have to introduce the password and select the option.