No problems with Mint 16 through 17.3 - Now with LM18, it does not work
I discovered through this - https://github.com/gnab/rtl8812au/issues/81 - that the Network manager in the new Kernel is to blame, that it does not recognize this family of adapters
Users have been reporting issues with NetworkManager not recognizing this family of wireless adapters after upgrading to NetworkManager 1.0.12-1:
Arch Linux Forum user V1del hypothesizes that this issue is being caused by the drivers not putting the devices into the correct management state, which conflicts with a patch introduced to the NetworkManager source tree in February.
See also lwfinger/rtl8188eu#171
How can I downgrade on LM18 and/or is there a fix that can be applied to the current version so it works with my Asus WiFI adapter?
(Incidentally if I use another WiFi dongle I can connect - speed on that one is really slow however, compared to what I was getting with my Asus adapter in the exact same location - only 25Mbps vs 90 - not sure if that is also related)