Q: OSX Yosemite Wifi issues

UPDATE on ABOVE

And as I began to write the above post I attempted to connect with 5ghz whilst running wireless diagnostics (alt+click wifi icon) (and connected over ethernet) and as seen a few times since downloading 1st seed instant connection to 5ghz without password request and its been solid for 45 minutes!!!!!!!

Didn't do ANYTHING... still having problems using my WiFi connection, unusable. Web pages take minutes to load (if they even load at all), because keep dropping for no reason... while my HP 2004 Celeron M Windows Vista works GREAT, this is insane. Come on Apple?!?

I had the same problem, tried a lot of the suggestions you guys proposed with no luck. I finally solved the problem by replacing my old D-Link WBR-2310 with a new D-Link DIR-818L

hexdiy wrote:

 

Well, God Speed, MattyB199! You did the right thing for the moment, and you not being into experimenting. Someday soon, I expect...

As for me, I too, have reverted back to Mavericks which isn't saying much either. I am envious of those who have Apple systems running Snow Leopard and those who still have their Mac Pro Desktop PPC's. Hind sight is 20/20. I could have saved myself hundreds of dollars and disappointment buying a refurbished Mac Mini running Snow Leopard or a Mac Pro G5 Desktop PPC with all the bells and whistles. Windows runs great on "Intel Inside!". Yeah! Go figure. OS X is nothing more than a Linux Distribution gone awry not ready at all for prime time. The Personal Computer User not in mind. The issues that are in Yosemite are plenty. No. We did not have to hit the darn upgrade button. Yes. It's free. The Personal Computer User should not have to afford the cost of upgrading home network equipment, nor Wi-Fi amplifiers about the house just to run this Yosemite thing. That's why it works at the Apple Store and corporate environments. They have all that stuff to rid themselves of "Dead Zones". I shall wait for Apple to "push" the Yosemite update. Hopefully, sometime before October of this year.

Tried every solution on this thread to no avail.

Reverted back to Mavericks. Disappointed.

I have been following this thread with interest, because I have been having periodic disconnections from my AirPort extreme router since installing Yosemite. When this happens, I have a sudden loss of connectivity and usually have to restart to reconnect. This only affects my MBP late 2008 model 5,1...not my iPhone or iPad mini. All software is up to date.

This happened tonight and I immediately ran Wireless Diagnostics...would it be helpful to anyone if I posted the results here or should I send directly to Apple?

British Telecom (BT) HomeHub dual-band routers use the same SSID and password for both bands by default. When I initially installed a Homehub 5 (the version with a bulit-in modem), I was getting lots of disconnections with my iMac. I then set each band to have a separate SSID and password, and set the iMac to use the 2.4 Ghz band as its preferred Network. I also set the wireless channel to avoid other channels in my areas as much as possible. Since then, the iMac has been rock-solid. My iMac is located quite a distance from the Homehub and the signal strength varies, depending on goodness knows what factors. I surmise that, when the two bands use the same SSID and password, the iMac has trouble switching between the bands when the signal strength of each varies. My understanding is that, although the 5 Ghz channel should provide a greater speed of data transmission, it is more distance-dependent than the 2.4 Ghz channel. My recommendation to users of the BT dual-band Homehubs who are experiencing disconnection problems is, first of all, turn off the 5 Ghz band and see if you get any improvement (turning off the band means that you won't have to change any settings on your iMac or any other devices). If you get an improvement, then you can set each channel to have a different SSID and password, although you will have to change settings on devices that connect to the router. If you do not get any improvement, then simply turn the 5 Ghz band back on and you are back where you started. My personal experience is that turning off the FON service (allowing a small part of the router bandwidth to be used as a semi-public hotspot) has noneffect at all,on connectivity issues. By the way, turning off FON means that you then cannot use any other of the enormous number of other FON routers as access points when you are away from home.

After reverting to Mavericks, I was once again experiencing poor WiFi performance comparable with the issues suffered with Yosemite.

After some research on activity monitor, I realised the culprit was the Google Drive app which I had downloaded. It was eating up my bandwidth in a big way. Once I disabled it, performance was back to what it should be. Might be an idea for anyone on here struggling with WiFi issues and running the Drive app to do the same. This is probably at least part of the puzzle and I hope this helps some of you.There are plenty of threads online about this issue for anyone who wants to look into it further.

Tried everything possible, still not working without the stops.

The one thing that gives the best results is to (alt+click wifi icon) start the diagnostics.
No stops while the system is overlooking the connection.
Just leave it open in the background and start it over when it reports errors (lots connection or weak signal).

Software error.

I just wanted to state again, that when I run into my issue, my whole router goes down. Ethernet connection AND wifi. Is that what most people on here are facing, or is are you mostly experiencing a "spotty wifi connection" between their router and their mac?

Mostly spotty wifi but occasionally - some days worse than others i lose ethernet connection too.

Yep very similar experience

Same thing happens to me and I cannot print at all.  My printer stopped working wirelessly!  *****!  Can't believe I just spent $3500 on a new MacBook Pro for this!

Try this - https://www.youtube.com/watch?v=p85xwZ_OLX0

Hi, tried most of the solutions listed here. The one that did the trick for me was changing the wifi channel on my router from 6 to 11. I have no technical explanation for why this works, but after the change it was dead stable.

Yllo