I have a problem with making a wifi adapter TL-WDN6200 by tp-link work under Ubuntu 16.04.
I had been using an rtl8812au driver for a year. Once in a while it stopped working and I had to repeat the entire installation procedure over again: make, make install, modprobe rtl8815au. After a few attempts it worked again. Now the situation is different. The same procedure does not work no matter hiw many times I repeat it. I tried to download other drivers from the Internet to no avail.
Ubuntu has successfully detected the adapter. Moreover, I can see the list of available wifi networks. However, when I try to connect to one, it does not connect. Other devices connect to the same network without an issue.
What am I possibly doing wrong? Is it a driver problem or a hardware problem?
