wifi problem with yosemite 10.10.2

My problem (MBP 15 -early 2011) started with 10.10.1. I was hoping it will be solved with 10.10.2. It was worse than before. I had to downgrade to Mavericks (10.9.5). At the beginning I was having similar problems with WiFi connectivity (10.10.2 has damaged the WiFi adapter??). It has become better now but still have occasional disconnections while using WiFi. However, is more stable now than with Yosemite, by far.

I think Apple has not dealt with this problem adequately. It is unacceptable that Apple users suffered from connectivity problems for so long ( people are dealing with this problem since last October!!!!!). Somebody must wake Steve up from the grave....

My installation of Yosemite (the one I have saved) is OS X 10.10... no 1 or 2 (and you're right... 10.10.1 and 10.10.2 saw the advent of the 'wifi-less' mac).

If you can get your hands on this (OS X 10.10) installation. It works for me It's too big for me to share... sorry)

Alternatively..? (and I am not an expert here at all) If it's possible to somehow rebuild the 10.10.2 installer with a working wifi..? Not unlike making an Android Rom? Oh wait... aha..!! That's what we're waiting for Apple to do isn;t it..?

Just a thought.

If problems mainly occur after sleep, I would highly recommend turning off DHCP on the Mac and assigning a manual IP. Since upgrading to 10.10.2 my new Powerbook was consistently losing its LAN connection after being asleep for a few hours. Since I turned off DHCP a week ago and gave it a fixed IP I have had no problems. I hope this helps someone else. In my case, it was also crashing my Netgear router, but I think that was secondary side effect, happening to trigger a bug on the Netgear.

There is an option under Network settings to set the IP manually. Just use something like .200 as the last octet, to avoid collision with DHCP assignments to other devices. Fill in the other fields however your router has done so previously. Don't forget to set DNS under "advanced' tab. If that works, then check to see if your router has an option to limit the DHCP pool, just to be totally kosher and make sure it doesn't try to give that IP to another device (which seems unlikely based on the routers I have seen). Many routers also have "reserved IP" option, that lets you assign a fixed IP to a certain hardware (MAC) address. I would not expect this to be any help, if the Mac is having problems with DHCP. Especially, if Yosemite is generating random MAC addresses to avoid tracking, as someone mentioned.

Nope, it's the computer. I'm running 10.10.2 on a Macbook Pro retina and my connectivity problems started with the upgrade to Yosemite. The 10.10.2 upgrade is even worse. Now my wi-fi drops every 15-20 seconds. Both my phones and my Roku maintain a consistent connection. Apple needs to fix this. My laptop is nearly unusable as a result.

Hello everyone,

I have tried all solutions of this long post. Nothing has worked. Right now I am surviving leaving always a terminal with a ping to google. If I ping the connection is not dropped. If I stop to ping, I have to restart wifi every 5 or 10 second.

I have an iMac (OSX 10.10.2) from mid 2013 with keyboard and bluetooth mouse and I am very bored of this topic.

Cheers! Xesco

Ik heb mijn bluetooth muis uitgezet, sindsdien is alles terug in orde! Ik heb geen problemen meer! Ik had hiervoor ook al problemen met Yosemite maar niet met wifi. Alles is begonnen met de update 10.10.2. Na wat gezoek op internet vond ik dit als mogelijke oplossing en blijkbaar werkt het! (voorlopig toch)

I have the same problem on my MacBook Pro (Retina, 15-inch, Late 2013) with 10.10.2 (14C109). I'm getting very annoyed and disappointed with this problem that I cannot know how to solve. My other computers using the same wifi is not affected by this.

Here is a ping stat when using the internet and it cuts out:

--- vg.no ping statistics ---

1595 packets transmitted, 1498 packets received, 6.1% packet loss

round-trip min/avg/max/stddev = 10.481/16.263/580.566/27.298 ms

After working with an Apple senior supervisor for several weeks on the wifi/Yosemite issue (he consulted with several wifi and bluetooth specialists), we finally came to the following solution, which has solved this issue for me and for the rest of my family who were also experiencing the wifi problem:

1. Turn off bluetooth.

2. Disconnect all peripherals from your computer.

3. Open System Preferences. In the "Energy Saver" preference, de-select "Wake for network access" (no check, and leave it that way).

4. Open the finder. Select the "Go" menu. Select "computer." Select "Macintosh HD." Go the the "Library" folder. Go to the "Preferences" folder. Find the preference file "com.apple.bluetooth.plist."

5. Rename "com.apple.bluetooth.plist" as "com.apple.bluetooth.plist.old" (i.e. add ".old"). Eventually, if this solution works for you, you can delete this "old" preference file.

6. Restart your computer (this will create a new "com.apple.bluetooth.plist" preference file).

7. Turn bluetooth back on.

Apparently, the problem is a bug caused by a bad interaction between the bluetooth preference file and wifi.

Good luck.

TTo expand your WiFi post us for users of a Dual Band router. Your 5 or AC names need to be different so those SSIDs can work correctly. Plus when using those new channels for 5Ghz or AC in the highest numbers that your router can support. This will help.

My problems are a little different than most, as my Yosemite laptop was losing its LAN connection even while connected by wired ethernet, to be fixed only with router reboot. I pinned the problem on Yosemite because it began with the 10.10.2 install, and I was able to fix the problem by turning off DHCP on the yosemite laptop. However, after nearly 2 weeks of flawless performance, the problem returned when I upgraded one of my iOS devices to 8.1.3. In retrospect, I realize I also upgraded a different iOS device to 8.1.3 around the same time of the 10.10.2 install, so it may have been theculprit all along. Or, at least there is an interaction. Now, if I put the newly upgraded iOS device in airplane mode, I have no network problems. If I leave the iOS wifi live for a day or so, I will find the router crashed. Curious, though, that my other iOS device running 8.1.3 does not cause the problem anymore. It seemed to be fixed with turning off DHCP on yosemite, but maybe that was coincidental with some other change in the iOS device internal behavior.

Just thought I should throw that into the mix here. Turning off wifi on nearby iOS devices might make Yosemite networking more stable. Or, my problems might be entirely unique to my NetGear router.

The same problem persists, I erase all my HD and install Yosemite again and the errors persist and then update and the problems continue. I really need the wifi for work with my macbook. It's a long time waiting a fix and nothing!

I'm very bad about this situation, COME ON!!

I am looking for a solution.

If you turn off the mouse, with the physical button, and then turn off the keyboard, hardware also, and turn them on again in the same order the wifi connection does not become to fall. ✅

Perhaps the OS select another channel for them? I'm going crazy? 😕 I can only say that it works. (iMac 2013, Bluetooth Keyboard & Mouse, OSX 10.10.2)

Cheers! Xesco

My solution involved the use of a second iMac with Yosemite 10.10 used as a router to WiFi... It works but...

Your strange (but not much) solution… seems to works for me!!! THANK YOU!!!

I turned off mouse then keyboard, then on mouse and keyboard and now it seems to work!

I had the same wifi dropping connection problems with my brand new retina macbook. I tried all the fixes I could find online and the one with the custom locations in network settings seemed to work for me. At least for about a couple of days. Then the issue came back and it was worse. I couldn't hold a wifi connection for more than 10 seconds without being disconnected.

I even tried to restore OSX but without an internet connection that is not possible since I couldn't download the OSX image from Apple's servers (thank you Apple).

I was worried that this might be a hardware issue so I decided to take drastic measures. I came across this article (http://bleeptobleep.blogspot.co.uk/2013/02/mac-install-windows-7-or-8-on-externa l.html) on how to install Windows on a USB drive. I thought that if wifi worked in Windows then this would indicate a software issue. And that was the case. I install windows and the bootcamp drivers and the wifi worked flawlessly. I tried it for 3 days and no disconnections what so ever.

Then I decided to boot in OSX and try to find another solution to my wifi problems. But there were none anymore. It seems that the Windows installation might have played a part in fixing the wifi adapter (maybe reset or something). But I took no chances. Since wifi was working I went on and restored a fresh copy of Yosemite installation.

Its been 1 week now in OSX without any wifi issues. I hope this fixed the problem.

If you are in a similar position as I was and you ran out of options consider giving the above a go and see if it helps you.

This is what I did.

Created a workflow in Automator to do the following:

Once the iMac turns on and I login > Open System Preferences > Bluetooth > Turn Bluetooth Off > Go to Network > Turn Wi-Fi Off > Turn Wi-Fi On > Go back to Bluetooth > Turn Bluetooth On

Saved as application, executed as login item every time I login.

Problem solved.

A fancier way to do it would be with Apple Script and run it on login (much cleaner) but I couldn't get the plist for the Wi-Fi pane and had no time to play around...