OSX Yosemite Wifi issues

Hi

For what it is worth:

Did the 10.10.2 upgrade, wifi connection bust immediately.

Went into Airport extreme setup and changed to stop using "automatic", restarted computer and have had no issues since.

Hopes this will help.

Best Claus

I think I may have found a solution in my case but it may not apply to most people. Fortunately, I had a couple friends come over this morning who are much more knowledgeable about Wifi networks, especially with Apple airports.

Here's the important detail. I have what I would call a heterogeneous-homogenous wifi network. It's all Apple devices but they are different vintages and versions. However, what turned out to be the key was that my airports were configured with a mix of "WPA2 Personal" and "WPA/WPA2 Personal". Turns out that when I was trying to roam from one basestation to another where the "Wireless security" setting was not the same, my laptop could not make the switch.

I had no idea that "WPA/WPA2 Personal" was not a superset of "WPA2 Personal". Basically, whichever set of credentials my laptop had dictated which airport worked. I also think this may have been why I kept seeing the request for permission to access my Keychain for this wireless network from Network Diagnostics, since the credentials kept changing. As we were chatting before my friends left, they wondered aloud if my keychain syncing via iCloud could be a factor in when this problem arose. I don't know. I needed to get back to work so I didn't offer to test it.

So, after a few hours the network seems stable. I will continue to monitor and report back if I see anything.

Chip

FYI, Below is a message I started to post last week but got delayed.

Before I start, I'd like to give a hat tip to Wifi Explorer. I'm not sure who on this forum posted it but it's been helpful to me.

I was looking at my problem some more and while the most recent failure was not a WiFi drop, it definitely seems to be triggered by a change in WiFi signal level by moving locations within the house.

The first thing I noticed was email images stopped loading; so I launched Network diagnostics which showed that the "ISP" had failed:

So I launched Wifi Explorer and all my Wifi signals were still active and I was still attached to the same airport at the same signal strength (2.4Ghz) as I was before I moved:

So I looked at my TCP settings and it looked OK:

I tried to Renew the lease and ended up getting a self-assigned IP address (169.254.64.58).

I then moved back to where I was and everything resolved itself.

hexdiy wrote:

To check, anyone Terminal prone: run the "ndp --" command (perfectly safe) and post your output.

If the output has chatter, you may have issues.

If "ls ndp" outputs "no such file or directory", you at least have no issues with that. I think.

Good luck!

This is what I got:

file:///Users/pauljohnson30/Desktop/Screen%20Shot%202015-02-13%20at%2018.25.36.p ng

Let me know if this doesn't appear as image

file:///Users/pauljohnson30/Desktop/Screen%20Shot%202015-02-13%20at%2018.25.36%2 0copy.jpg

Grrr! again

This appears slightly off-topic but it isn't really.

===

What the **** did I do wrong?!

I prepared my new Cruzer USB to take x.x.3 update to keep it off my internal SSD

I checked my systems prefs to make sure it would not auto install so I could direct it to install on the usb

This seemed ok so I downloaded, it restarted and installed itself on the internal SSD!! What the **** did I do wrong? I was following all the ref articles to the letter - how was I supposed to download the install app without installing it?

I have an uptodate TimeMachine backup (which I have isolated so it can’t be overwritten.)

Do i now revert to x.x.2 using TM, then launch x.x.3 from Finder and direct it to the USB? If so, how do I stop TM from updating when i plug it back in before I have reverted?

Lordy lordy some of us are born to be geeks, others ain't

Paul

PFJ30 wrote:

UPDATE

And this what I get in Terminal when trying to use createinstallmedia

You got the "no such file or directory" message in Terminal because the Install OS X program deletes itself from the Applications folder after it applies the OS update, hence it could not be found. You applied the update (unintentionally apparently). When the Install OS X program starts and the window opens, as someone else already has noted, you need to QUIT that program before it actually runs and updates the OS X. When you QUIT, the Install OS X program remains in your Applications directory. At that point, you can use the createinstallmedia or other procedures to install elsewhere or create a bootable external install disk.

Still largely hit (mostly 2.4) and mostly miss (5ghz) here. Tonight as usual 2.4 was rock solid, tried to switch to 5, no deal, then 2.4 lost as well 😟 Diagnostics says you are connected but this screen shot shows the reality. This inability to get back to 2.4 after attempting 5ghz connection new under this seed (penultimate 10.2)

I had just purchased a new MBP w/Retina 2014 which came preinstalled with OS X 10.10.2 , everything worked as it should except for the wifi. I tried most of all the fixes listed for it with the exception of Kext Fix. So deleting files, preferences, creating new location, several OS wipes nothing changed.

So I decided to look at my router which by default the wifi channel band frequencies are set to auto as they always have been. Since I have no use for wireless a/b/g I set my 2.4 GHz to only do wireless N and my 5 GHz to AC mode only and also found a channel that was not interfering with other wifi signals in my area. For me it was for wireless N set to channel 2 and for wireless AC set to channel 44. See attached photo.

Once I did this my wifi speeds were back to normal level's just like any other machine in my house. Just to add to this I'm on Verizon Fios 150/150 also at my mothers house I have issues with the speeds being slow and she has Comcast Xfinity. Cause wireless N I do not get my full speeds at all but pretty close to it. On AC connection I get the full speeds of my connection.

Hi,

-I've updated to 10.10.3

-I didn't update from Mavericks, but did a completely fresh install of 10.10.0 back in the days

-I've tried Hybrid-Mode for the Bluetooth

-I've shut down Bluetooth

-I've set "Configure IPv6" to all possible variations in the TCP/IP settings

Still I get periodic problems with the latest-and-greatest cisco AC access points solution we have at the office. At home with my Fritz!Box (no IPv6 enabled) everything works like a charm.

What I just noticed:

I can provoke the drops by opening System Preferences on the Displays tab!

The graph below is from ICMPUtil, I ping the next four hops. Latency is blue, lost packets are red, 0.1s ping interval. I get that the periodic drops could be anything. And although their occurrence looks like clockwork, I don't worry about them yet.

The parts with many red bars together is when I click on the Displays Control Panel. 2-3 Seconds after leaving it, the pings goes back to 'normal'. And within the red part, you see the latency plotting some stairs. Also productive traffic during this time is impacted.

***? Am I missing something? Can anyone reproduce anything comparable?

thanks

simon

I've not been able to post any of my findings on the Apple seed variants for obvious reasons, however I now have the latest non seed version installed so I assume I can say what I like.

In simple terms mine is still broken and I can't have both a reliable WIFI connection and use bluetooth at the same time. Bit of an **** as I use my Macbook primarily on a desk plugged into a monitor.

Here are the numbers

Spec

Bluetooth switched off and connected to a BT Homehub 5 2.4Ghz home network.

Bluetooth switched on, connected to the same network with apple trackpad, apple keyboard and Bose Sounlink Mini connected on Bluetooth.

I'm not going to try the 10.10.4 seed update as I'd like my computer back and to be honest suspect that this is a Broadwell hardware issue that won't be solved.

<Edited By Host>

I have the same vintage iMac that you do, with the same WiFi hardware, and I have absolutely no network issues whatsoever. Explain then ,why you have issues and I don’t. Same machine, same operating system, possibly different modem/router configuration. Yet Apple is to blame and it couldn’t possibly be some other factor out the hundreds of external factors that go into a stable WiFi connection?

@ikrupp - thats an excellent question

it could well be a difference in network settings

as I noted, uVerse swapped out everything at my house and all tests show that the speeds at the router are where they should be

here is whats coming in.... unfortunately, when I attempt to dl a file, i am lucky to get the following:

usually its are 200 kbs or lower....

so it would be interested to compare our Network Pref panel settings....

I feel a little lucky that I'm now not having a problem, hope I haven't spoken too soon. I followed these instructions:

I can now connect to either the 2.4 or 5Ghz without drops. It would appear that having the choice of two is causing the problem, for me anyway.

Hope it can help someone else, but I do feel that it should be sorted by Apple.

Just to let you know that the original issue was a software problem with an Apple wifi driver. It took 2+ years to fix and it was really frustrating.

I had a perfect high speed connection to my router (Tx rate was quite high) but packets were being dropped massively.

What you are experiencing sounds different. If your TxRate is low you need to figure out why. It's either due to interference or ... bad hardware ... or distance from router?

I have a great App that I bought while trying to figure out what was wrong with the wifi back when Apple hadn't sorted out this problem. Among other things, it shows me how lucky I am that hardly anybody in my London neighborhood is using their 5Ghz networks. I am the bright yellow one on the right and look at the mess in the 2.4 Ghz range (on the left).

Not sure if there's a free app (WifiExplorer is what I am using, from the App Store I believe):

I just got in touch with an AppleCare representative, you can potentially try resetting the System Management Controller, there is an article here on how to do this, and it's easy and safe Intel-based Macs: Resetting the System Management Controller (SMC) - not sure if this is the solution for everyone, but I have had some success so far, lets wait and see how long it will last!

I have a Macbook Pro (2012). After upgrading to Yosemite, wifi began dropping every 15 minutes or so. I chatted with Apple support about this. They emailed and told me to try "Resetting the System Management Controller (SMC)." Instructions found here: Intel-based Macs: Resetting the System Management Controller (SMC) I reset as instructed. It did not solve the problem. My wifi keeps dropping. It just dropped out again, as I type this. Ugh.

MacBook Pro (13-inch, Mid 2012), 2.9 GHz Intel Core i7