I recently bought a Lenovo Thinkpad T440P. The wireless driver did work out of the box. It was not even recognized by the system. A quick search revealed I am not the only one with the issue. I later learned that the Wireless adapter requires a driver called RTL8192EE, which is not supported by Linux. I then downloaded some driver file off the net, which I can't find now, and the network adapter worked. But it was too slow to be useful, and it disconnected far too often. After a while, I stumbled across this post: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1239578 The thing that caught my eye is this particular comment: > I was unable to get the latest Realtek drivers into a form for > submission to the kernel in time to make kernel 3.17. As a result, I > created a git repo at http://github.com/lwfinger/rtlwifi_new.git. I > have no idea if it will work for youm but it is the latest code,' Source: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1239578/comments/156 So, I cloned the repo, compiled and installed. Now, network-manager does detect the adapter, but it says "device not managed". If i run `iwconfig` in a terminal, the device appears as "managed". The device is not detected by `ifconfig`. Here's where the mystery gets really interesting: If I run aircrack-ng and use that adapter, it works! Packet injection works perfectly, packet sniffing is very unreliable, I'd say 95% of the packets are lost. Any idea how to resolve this? I want it to work normally. Thanks in advance.
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