A time ago I bought a new laptop but I had a lot of problems with it.
First there was the problem with ubuntu who hadn't a driver for the network card. After a long search I found the solution here: Wireless card Realtek RTL8723AE-BT is not recognized. The solution with the dropbox link worked, but not for long.
Not long after that I had problems with the card in windows AND ubuntu (and I still have them sometimes). Sometimes the card just does not work. I have looked for a solution and let people from the IT-service in our school look but nobody of us could find a solution.
After that, I upgraded the kernel of ubuntu, which has the next problem because the driver only supported until kernel 3.3. But in the same article that I've mentioned before, someone gave a second link for kernel 3.5. But from that time, everytime I restart my computer the driver isn't working automatically. I had to enable it as an LKM with modprobe.
It worked for a while, but suddenly it stopped working. It doesn't work anymore to use modprobe to enable it and I've tried restarting, reinstalling the drivers, ... I installed almost everythink I could think of and what I could find on the internet.
Do anyone have a solution for this? It's so irritating... Thanks!
EDIT: Now working again (for a time...)