I have this setup:
inxi -n
Network: Card-1: Intel Ethernet Connection I217-V driver: e1000e
IF: eth0 state: up speed: 1000 Mbps duplex: full mac: 94
Card-2: Realtek RTL8188SU 802.11n WLAN Adapter driver: r8712u
IF: wlan0 state: N/A mac: N/A
After booting WIFI won' t work out of the box I had to edit
/etc/NetworkManager/NetworkManager.conf and add the following lines:
[device]
wifi.scan-rand-mac-address=no
After reboot/restart service it works as expected.