Yosemite wifi problem
I boot macbook pro mid 2014, it had installed 10.10.2. I tried a lot of solutions for fix wifi, but they didn't resolve problem. My macbook lost wifi every 3-4hrs, but sometimes it can work without lost - day. I tried different settings for hot spot, removing network profile, switching on/off, creation open network without security but it was fault.
MacBook Pro with Retina display, OS X Yosemite (10.10.2)