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Some OS X Yosemite Users Plagued With Wi-Fi Connection Issues

BillyBobBongo said:
Doesn't. Fix. The. Issue.
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Create an Automator shell script to ping your router every 2 seconds and run that. It'll fix the problem temporarily until Apple releases a patch.

Alternatively, if you have a "Beacon Interval" setting in your router's advance wireless settings page, set it to 50 ms instead of the default value (usually 100 ms) and that will also fix it.
 
Have issues with my MBPr. Don't know off top of my head what flavor machine it is. Seems to work for a bit and then nuts slows to a crawl or stops transmitting. Turning wifi off and on again resets the cycle. Had the same thing happen with an older MacBook when upgrading to leopard or snow leopard. It was tied back to my crappy ATT router and how it negotiated DCHP leases. Solved that issue by adding an el cheapo wifi router into the mix. Maybe I can now go back to using the ATT router and eliminate the middle man.
 
Thought it was just me having disconnection and speed issues with Wi-fi on Yosemite (on a 2013 MBA). :eek:
 
Also having huge difficulty with my uni's eduroam network. The Cloud Wifi, which runs off the same infrastructure, works fine without any disconnecting. I've seen a lot of people having problems with their school and university's (I think like 3 others have mentioned eduroam in this thread) WiFi. Issues with enterprise Wifi mainly?
 
Hmm...no problems here. Yosemite has been a great release so far. Some minor bugs in Safari and Finder but compared to Mavericks or Mountain Lion Yosemite is quickly becoming the new Snow Leopard of this generation.

I was worried after the iOS 8 fiasco but Apple did a great job with 10.10.

-P
 
Hmm, not me

I did have a number of problems that would slow down Yosemite to a crawl -- the biggest one was the "Instant ON" extension in Audio Hijack. I got the new version, but apparently I hadn't installed the Instant On thingie, which is an additional install. That was 3/4 of the problem.

The other problem came with my bluetooth Magic Mouse and Trackpad getting wild and actually dangerous. I would plunk on one icon, it would grab the one next door. I'd try to unhook it, and it would go to the trash. Wild selections all over the screen.

That was a simple solution too. Go to the System Prefs, Bluetooth, and erase your trackpad, etc, with the device turned off. Then turn it on and pair it again. Voilà!

----------
Pentad said:
Hmm...no problems here. Yosemite has been a great release so far. Some minor bugs in Safari and Finder but compared to Mavericks or Mountain Lion Yosemite is quickly becoming the new Snow Leopard of this generation.

I was worried after the iOS 8 fiasco but Apple did a great job with 10.10.

-P
Click to expand...

There was one day of "fiasco," no? From those who downloaded 8.01 over the air on a new iPhone 6? Dumb mistake, fixed the next day. Very careful with 8.1. I am now making it a policy to download any major upgrade via iTunes. Nothing to erase and reinstall, and better than a diff file.
 
mordac said:
Yes AP=Access Point=basestation.
What difference does a Cisco badge make? We use Cisco equipment too.
I didn't say that it was a problem with an access point itself. I said it was the client flapping between two (or more) available access points: one has better signal, the other has better bandwidth. Each time it connects to one it has a reason to switch to the other.
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Sorry about that, bad explaining. By AP I thought you meant AirPort Extreme or something of the like ;)
 
I tried the method on OSXDaily. Seemed to help until I noticed my AppleTV could not connect to iTunes anymore. Tired of bugs/glitches, I did a clean install. Everything fine now.
 
penajmz said:
Yup. I'm affected as well. Drops all the time, when waking up the computer I usually have to turn wifi off and on for it to work correctly too. I have a rMBP.
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I use my laptop wired most of the time but will have to check. I am definitely seeing the issue on my iPhone 5s since iOS 8.x was installed, but it's not affecting my iPad (3rd Gen). I have a Linksys-Cisco E4500 access point with the latest firmware. I updated it shortly after the problems started and made no difference.

What access point are you using? That's everyone who's having the problem, "you".
 
Wifi Issue

This happened to me only yesterday, after school and dropped many times with their wifi and I switched to Optimum wifi but that was just too slow. But at my hone, its fast with no drops. I have ASUSR68u router. Mid-2014 Macbook Pro Retina
 
I am sooo glad I did not update. I never thought I'd say that about an Apple update. Heads should roll, especially given the problem with updating the iPhone.
 
Drives me crazy

Have to turn off wifi, then turn back on. Major pain in the butt. Will go for an hour with no problem then start every 10 minutes.

Airdrop is messed up, too. Recipients will show up fine. Then they won't.

Quality control really needs to improve in Cupertino.
 
mordac said:
The problems we're seeing seem to be a combination of two issues.

There seems to be some indication that dual band (802.11n & 802.11ac) APs are involved - the idea being that if the client can see a poor quality 802.11ac AP *and* a good quality 802.11n AP, it will constantly flap between them.

That in itself might not be so bad, but the extra problem is that it can take several seconds to roam to a new AP since the WPA supplicant tries to check AP certificates for revocation *before* bringing the network up (think about it). It ends up sitting there for a few seconds before timing out and connecting anyway.

The workaround for the first problem seems to be to pick either 802.11n *or* 802.11ac - i.e. don't mix APs that only do 802.11n with ones that do both 802.11n and 802.11ac on the same SSID (at least, not in the same building).

Apple's suggested workaround (at http://support.apple.com/kb/TS5258) for the second problem is to mark the AP certificates as trusted. You also have to mark any intermediate certificates as trusted, since it tries to check the whole certificate chain against the CRL/OCSP. This is pretty annoying since you have to do it on each client.
Click to expand...

Issue happened to us as well. But not dual band. Just N network. See below

FatMax said:
I don't think it's a AP (if by that you mean basestations?) problem, I believe it's more related to the certificates you mentioned. We have Cisco equipment and still loads of problems.
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We have ~35 Cisco ap's (WPA2 Enterprise authentication) Issue we found is that forever everyone authenticates via LEAP (mavericks does this by default). Yosemite dropped LEAP and now defaults to PEAP. Fixed that in APs, no more issues.

mordac said:
Yes AP=Access Point=basestation.
What difference does a Cisco badge make? We use Cisco equipment too.
I didn't say that it was a problem with an access point itself. I said it was the client flapping between two (or more) available access points: one has better signal, the other has better bandwidth. Each time it connects to one it has a reason to switch to the other.
Click to expand...

Resolving PEAP authentication issue stopped the roaming and "basestation is leaving" entries in the log.


I am very sure there is NOTHING wrong in the Yosemite software. Found issues only prevalent on large scale networks (offices, schools, etc) using WPA2 Enterprise authentication. I have yet to have any issues with WPA2 personal or any airport, netgear, linksys, crappy routers...

Edit: if anyone finds a way to just enable LEAP over PEAP in Yosemite, please let me know as this would solve a lot of other headaches...

Edit2: ios 8 also dropped LEAP. We noticed we had to trust certificates almost every day. Again, resolved w/ PEAP fix in the APs
 
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Why?

jml12286 said:
Please Fix ASAP!
I was beginning to think the school wifi was just being dumb, but noticed it only happened to computers with yosemite.
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Why did the a school allow the IT person or tech teacher to install Yosemite, assuming they updated existing machines? Our school always made us wait at least three months or more until the bugs were ironed out.

Now, if these are newly purchased machines that arrived with Yosemite, you're out of luck I fear.
 
Can't say I've noticed dropping out on Yosemite yet but dropping out is a big problem when I updated from w7 to w8/8.1 when there was no problem before.
 
Me Too!!

We have been having the wifi signal drop to almost nothing then recover ever since installing Yosemite. Did not have this problem with Mavericks. I knew something had changed, but this article made the lightbulb go on. I was not aware others were having this problem.
 
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