How to fix Wi-Fi in OS X Yosemite 10.10.1

A recent update Yosemite 10.10.1 was produced with the aim to fix the WiFi. And it only aggravated the situation. With WiFi problems I have encountered a few times, but after this update is stable connectivity is lost each time the notebook is turned on. We already wrote about several ways solve this problem, but unfortunately, they are not helped everyone.

Blogger and programmer Mario Chiabara found a solution to this problem, but it may be you do not like.

The good news is that in order to fix enough introduction of a single command in the terminal. The bad - this command will disable AirDrop. Mario says, the problem is how to Yosemite connects WiFi and AirDrop. The connection is called AWDL and that it adversely affects the stability of the connection.

IMPORTANT: Disabling AWDL solve problems with the WiFi (I decided), but disable AirDrop. To return everything back, you are required to enter another command.

To disable AWDL, you need to open the "Terminal", and enter this command:

sudo ifconfig awdl0 down

To re-enable AirDrop and AWDL need to enter this command:

sudo ifconfig awdl0 up

Mario says that this solution is not suitable for older Mac models, as they AirDrop works in another way. If you rarely or never use AirDrop, then try this method can, because when Apple will release a working fix for WiFi unknown.

(via)