This is SOO annoying. Mavericks had its issues with JUMBO Frames that was never fixed but this is crazy now. Last night I upgraded to Yosemite from Mavericks. Now I can see my 5Ghz SSID but only have internet for 30 seconds at best. I don't even see my 2.4GHz network at all. If I toggle Wifi on and off I see the 2.4 for a moment and then gone. I removed all favorite wifi's and manually configured the 2.4 and will not connect. Removed that one and tried 5Ghz and same 30 seconds. I have done all updates, I have restarted numerous times and no go!
I did a fresh (clean) install. I formatted the HDD and had the original Lion install by default that came with the unit. It booted, had internet fine and then upgraded straight to Yosemite and immediately no wifi. Can anyone say if they did a clean install but from Mavericks and upgraded to Yosemite with same results??
What kills me is that apple doesn't seem to be giving ANY information out, no acknowledgement, and certainly no fix yet. I feel more and more like I am purchasing Microsoft Products where I am beta testing. If apple knew in Beta releases this was an issue with ALOT of people, they should not have released this yet! My laptop is my business and I am now tethered to a cable for everything!
Bluetooth disabled made no difference for me. Also I found that if I disable wifi while using my ethernet it will disconnect connectivity from ethernet until I unplug and replug...
APPLE ??? I guess I should just make some apple juice? or can I get some lemons??