[Link: pcworld.com]

I think this is what ate 3 FULL days for me this week, no time for food or water all day. Me and my client are both freaking out. Was using his Mac to do the speedtests because it's the main PC and in the middle of the house. If I recall my phone did test well almost every time I can remember trying.... Which should have been my first clue but the Mac was running like a Ferrari on everything but wifi so I was focused on the wifi and environment.

Waiting now on a response from him to see when he upgraded, but I think he's going to tell me he did it the night before I was booked to spruce up his wifi...which makes me look kind of bad...mmmmmkay. Tried 3 different Unifi models, an Airport Express, and a Time Capsule in different places in the house which once I was convinced it was passable meant ringing and converting phone lines and such, then down it would go again. By far the worst nightmare of my career.

If that is indeed your issue, looks like there's nothing to do but either downgrade, or wait for Apple to acknowledge, diagnose, repair, and push the fix (not necessarily in that order).

Be glad you haven't been using an Intel 7620 WiFi card, which has been utterly broken (no connection after resume, and connections drop and/or slow down to unusable) due to bad drivers since around springtime... and has only in the last week or so had a fixed driver appear, and only then from an OEM driver update (official fixed drivers don't exist on Intel's site).

40,000 views and 450 replies in the first week. [Link: discussions.apple.com]

Sounds like you found the problem, easy fix to roll back, no?

Rolling back is not a solution to the problem. It's a way to avoid it. Buy a new car; it doesn't perform in some way; it's not a solution to just get the old car back again.

I wonder how I missed that topic. I've had the Public Beta of Yosemite since it came out in June on a 2011 and 2012 Mac Mini. Neither showed any wifi problem.

I see that you've used Apple products for wifi routers. Which I too have two Airport Extreme 5th gen.


Whenever I see wifi issues with Macs, the first thing that comes to mind is to disable IPv6, restart and enable IPv6 again. I had to use this to get my iTunes AirPlay to work.

System Preferences---> Network---> TCP/IP(tab)---> IPv6---> select to Manual. Restart and put it back to Automatic.

KOT

Is this one of the two dozen or so solutions that have been offered? The gf has a Mac and was considering upgrading, but we don't want an upgrade to be a downgrade.

Router is a D-Link DIR-655.

Isn't the specific version of Yosemite 10.10 the one in question and Yosemite 10.9 or something more primitive you perhaps had was okay?