Q: OSX Yosemite Wifi issues

I have two computer running Yosemite that were fine under Mavericks but now are very flakey.  Really hope Apple fix this soon.

theforumenjoyer wrote:

 

My 2013 MacBook air on Yosemite was only getting download speeds around around 0.5 mbps. I turned off bluetooth and it instantly went up to 22 mbps. Looks like I won't be using my keyboard/magic mouse until 10.10.1 rolls out.

Did you try running a 5GHZ Only WI-FI ?

Yeah, at work I connect to a 5ghz channel. It's been noticeably slower recently, but it's better than my home connection on 2.4ghz. I also don't use any bluetooth devices at work and the connection is much faster anyway, so I'm not sure. I'll test it out today though.

It's also interesting that nobody else in an office full of MacBooks and iMacs on Yosemite with multiple wifi networks has noticed anything. And that includes people with multiple devices connected over bluetooth. My results on my 2.4ghz are pretty consistent though. A lot of people have said turning off bluetooth was only a temporary fix for them, but it still works for me and I can easily replicate the problem just by turning bluetooth back on.

Maybe my issues on a 2.4ghz channel at home are making me paranoid about the 5ghz channel at work. Guess I'll find out today.

When I look at all  of these posts, it seems that three is some type of log or error log that is filling up. Once it fills up , it clears and then it works.

For testing , I updated a MACbook air. When I first used it, It seemed fine then this weekend while testing at home, I saw it. It looks like it is connected but then it will not go to the internet.

I turned off the blue tooth and airdrop. It was better, I have not tried it again.

This might sound completely crazy, but ever since I moved my iPhone as far away from my 13" mid-2012 MBP which had had about five minutes of stable Wifi connection since upgrading to Yosemite a couple of weeks ago, it's been working. It's been about 24 hours now. (Yes, I had tried every single "fix" I could find online, previously. Some worked for as long as about eight minutes, but I'd say I was pulling an average of 2.5 seconds of wifi connection.)

Mind you, the connection is nowhere near as stable as it used to be, pre-Yosemite. Also, it only works with the manual DNS and MTU settings outlined in a gazillion comments all over the Interwebz - nothing on "Automatic."

The strangest thing is that I have had wifi and Bluetooth turned off on my iPhone, and Bluetooth turned off on my MBP, so I have no idea what is interfering with what and why and how, all I know is 1. while I do currently have a working wifi connection, something is obviously messed up and it's Apple that needs to fix it ASAP, but 2. hey, I do currently have a working wifi connection, so even if it means I have to keep my iPhone by the front door for now, I will at least be able to download the new version of Yosemite when it's finally out, I guess.

I really hope I haven't just jinxed it...

I apologize if this has been mentioned before, but has anyone else tried moving all other iThings away from their MacBook and see if it makes a difference?

Amazing that there is NOTHING coming from Apple on this .... I am having the same issues with my MacAir and Mac Mini. I work with about a dozen other folks that are having connectivity issues after upgrading to Yosemite (MacAir and MBP). As one of my colleagues noted,"if I wanted this kind of experience I would have kept my last notebook with an OS from Redmond"

Apple are kind of damed if they do and damed if they don't. If they acknowledge there is a problem they get slammed in the press and Samsung make videos of it. What disappoints me more is that this didn't come out in the beta testing especially when you consider how small the hardware platform is compared to Windows.

Monty72 wrote:

 

Apple are kind of damed if they do and damed if they don't. If they acknowledge there is a problem they get slammed in the press and Samsung make videos of it. What disappoints me more is that this didn't come out in the beta testing especially when you consider how small the hardware platform is compared to Windows.

What makes you so sure that it did not come out in the beta !!!!!!

I am having similar issues... Late 2008 MacBook Pro, installed OS X 10 - Yeosemite and started having WIFI issues.  Turned off my WIFI radio and could not get it to turn back on at all.  Ran diagnostics, restarted etc etc.  Found this thread and tried the reset PRAM, which so far has allowed me to turn on my WIFI radio finally.  Now I am able to connect for a few min before WIFI drops out and I have to restart or reconnect.  When I am connected WIFI is extremely slow....  APPLE - FIX THIS ISSUE please!

I am not familiar enough with Apple products or comfortable enough with computers anymore to try any of the other steps on my own... an update would be a brilliant idea!  Wish I could roll back to a previous OS.

I'd like to think that if they'd found it they would have solved it before customer release. However the more I think about it the more I think I had the same problem but to a lesser degree with Mavericks.

I used to get between 50 and 60Mbps with Mavericks in my office and bluetooth turned on. Now with Yosemite and bluetooth off I'm getting above 70Mbps and bluetooth on 0.9Mbps. The bootcamped windows 7 has always given me a rock solid 73Mbps regardless of bluetooth.

Maybe we've always had the problem but Yosemite made it worse.

Monty72 wrote:

 

I'd like to think that if they'd found it they would have solved it before customer release. However the more I think about it the more I think I had the same problem but to a lesser degree with Mavericks.

 

I used to get between 50 and 60Mbps with Mavericks in my office and bluetooth turned on. Now with Yosemite and bluetooth off I'm getting above 70Mbps and bluetooth on 0.9Mbps. The bootcamped windows 7 has always given me a rock solid 73Mbps regardless of bluetooth.

 

Maybe we've always had the problem but Yosemite made it worse.

Hi Monty,

I had severe Bluetooth > WIFI interference since the launch of Mavericks. The funny thing is that my 2008 iMac with WIFI is absolutely immune to all this.

My newer macs - especially my rMBPs are susceptible to this. I did NOT have any netowork resolve problems on Mavericks. Those came with Yosemite.

But I have been trouble free the past 3 weeks, in this regard. In regards to Bluetooth, if I switch to a 2.4 GHZ network and hook up my magic mouse, it is a matter of minutes before WIFI is gone...

Again, there are TWO very separate issues pertaining to and umbrella'd under the WI-FI topic. 1) Bluetooth interference with WIFI & 2) Fully functioning WIFI which cannot resolve to addresses although connection is hot.

MortenJamesCarlsen wrote:

 

theforumenjoyer wrote:

 

My 2013 MacBook air on Yosemite was only getting download speeds around around 0.5 mbps. I turned off bluetooth and it instantly went up to 22 mbps. Looks like I won't be using my keyboard/magic mouse until 10.10.1 rolls out.

Did you try running a 5GHZ Only WI-FI ?

Seems like I don't have any issues with bluetooth interference on 5ghz. It appears my problems are strictly limited to BT interference on a 2.4ghz channel.

theforumenjoyer wrote:

 

MortenJamesCarlsen wrote:

 

theforumenjoyer wrote:

 

My 2013 MacBook air on Yosemite was only getting download speeds around around 0.5 mbps. I turned off bluetooth and it instantly went up to 22 mbps. Looks like I won't be using my keyboard/magic mouse until 10.10.1 rolls out.

Did you try running a 5GHZ Only WI-FI ?

Seems like I don't have any issues with bluetooth interference on 5ghz. It appears my problems are strictly limited to BT interference on a 2.4ghz channel.

Yes. Bluetooth does not cause interference with 5GHZ Networks. At least, I have yet to experience such.

IPv6

I think i have found a temp work around until apple sort it out

i have been monitoring nettop to catch whats going on and i discovered tcp6 seems to be causing all my problems

the way i resolved it was set all NICs to manual and the IPV6 as well you can do this by setting it to link-local only then apply and then when it's got its IP set it manual then apply again then reboot and hey presto no more dropping out or lag been running a whole day now whereas before about a minute before dropout this also solves the lan issue and changing computer name in sharing stopped the duplicate share names

don't know if it's been tried already as this is a long thread

it may be to soon to speak but I've been on IPv4 DHCP WIFI for about an hour now and it seems to drop the internet but picks straight up again but that could just be congestion and transferring from one machine to another goes at top speed everything else is running great except the CPU usage appears a little high so I'm not sure what they are using IPv6 for but setting it to manual seems to have solved all my issues but then i don't use BT or airdrop.

Same happens to me after upgrading to Yosemite. WiFi drops every other minute. Mail & Web superslow.