OSX Yosemite Wifi issues

Was that the convoluted reinstall you came with with in discussions with Apple? If so I recall it. I'm extremely reluctant to do any kind of wipe of my drives, even though I have two separate backups, onsite and off site. It's probably going to have to happen eventually. Will have to wait till I close my office for a break or something.

Haven't been able to find any OS X drivers for my Edimax dongle yet. It wasn't recognised automatically. So working on that for now.

The procedure I outlined, is, in fact, taken from all the Apple Knowledge Base documents I printed up for myself, tested and outlined for myself. Then when I thought my outlined instruction worked, I tested it for myself again. I was my hope that my outlined tutorial would help all to prevent the pages and pages of Apple Knowledge Base documents to be printed, read and studied. As convoluted as it may seem. The first thing to do before a reinstall is get a working, bootable Yosemite Install USB Thumbdrive. OR revert back to OS X that shipped with your Mac via Internet Recovery. No matter.

Yes, all the steps I performed are outlined across numerous documents in the Apple Knowledge Base.

The beauty of the Mac is, you have the Internet Recovery "failsafe". I was reluctant as well. Once I had all my personal data stored on readable removeable media, I was good. Take care. I'll keep a watch! Got to go for now. Cheers!!

osihara,

Can you please explain exactly what the wifi issue that you are having. There are over 200 pages of responses to different issues.

I posted the fix that worked for me a couple of weeks ago, that came up after working with an Apple Wireless Senior Advisor and Engineers for over a month. But since there are so many people that have different issues, I do not know if this fix would help you with your issue.

The issue that I was having with my WiFi network is that I would have slow throughput when connecting to a router on the 5Ghz band with an 802.11ac connection. My LAN is wired with all Cat 6 cables and gigabit hardware, and I have a 15Mb DSL connection, but the max throughput on 802.11ac was between 5 and 7Mbits whether it was to the web or locally to another computer. As stated, I worked with Apple for over a month with a Senior Advisor and a couple of Engineers, and we were able to come up with a fix for my issue which to this day is still working. I am now getting about 60 - 70MB throughput on my LAN, and the full 15Mbit download speed from the web.

Yea... I have a new ac Airport Time Capsule (bought late last year) as the main router in the house connected to the net via ADSL2+. That has brand new cat6 run out to the outer edge of the patio where it connects to an older 2.4ghz airport extreme. This is bridged and wirelessly makes up the remainder of the distance to my office. All device in the office run fine, except the iMac of course. Will just ad right here that I just found and installed the drivers for the EDIMAX dongle I bought for my RPi2 and with the third router now unplugged the driver software reports about 70% signal strength and the iMac has not had an issue yet. But as sort of mentioned above, I haven't had any issues today at all; so that might be luck. Our ISP account turns over tonight to I should have a better idea tomorrow.

The symptoms I get are; it works as expected until it stops dead in it's tracks. The Wi-Fi menu-bar extension indicates it's still connected and working but nothing will get access. This includes access to other devices on the network. It's devices loosing connection that tells me it's not working. As far as I have seen the menu-bar extension never indicated no connection to the router. I get this behaviour with the airport extreme (bridged) and the airport express that I have used to tether the iMac. That is to say if I connect to the airport express via Wi-Fi I get the same results unless I use an ethernet cable;e. The ethernet works as expected.

The consistency of the issue in terms of times between drops is extremely unpredictable. I can go a couple of days with no issue and the next day it can be every few minutes. The following day maybe a mixture of nothing for hours and then a few rapid drops and then a bit of stability and then more drops and so on.

Apple have been in touch with me and gathered data, so I was pleased when I heard DiscoveryD was back-burnered because I thought, as always and optimistically, it's was the light at the end of the tunnel; but not for me.

I have been offered another oldish Airport Time Capsule by my folks who don't need theirs anymore so I will give that a shot in place of the other as well. But again it's over 3 hours to get to their house, so that hasn't happened yet. I do feel more and more that in some way my wi-fi card was damaged by the first Public Beta... I have looked and nearly bought a replacement just to try a few times. Looking again. Will see how the dongle goes under full load tomorrow before I make such purchase.

It seems that the issue that you have a totally different one than the issue that I had experienced.

I had absolutely no issues when using a router that only had 802.11n on 2.4Ghz. The issue only arose when I decided to upgrade my router to one that was dual band with 802.11ac. Plus my issue was a consistant lack of speed, I never had any drops.

Good luck on this, It will be to see what the resolution is.

Yea I had tried switching the router between it's various modes and channels with no change in effect that I could identify.

I just bit the bullet and bought a second hand Wi-FI card replacement of the same model from eBay. Wasn't expensive so worth a try. Just another option. And on that note the dongle is doing well. Noticed my NAS responded a lot quicker than usual. To early to know if it was coincidence.

Thanks for the discussion.

osihara,

When you get your card and install it. Yosemite and the iMac may or may not recognize or resolve the new firmware of the new card. Use the NPRAM reset procedure for your iMac year model. Then an SMC reset procedure for your iMac year model.

Then you may have to shutdown then power up holding Command and R keys. In Disk Utility you would Erase Macintosh HD, when erase is finished, Install a New Copy of OS X and follow on screen prompts. Know you've done it, just make sure you have backed up all personal data. Just thought I would save you a bit of frustration if OS X and your iMac fails to report the card change properly. Hope the Dongle is getting you somewhere in your troubleshooting. This is a work night as well. So I may or may not respond in a timely fashion if you direct any reply to me. Take care. Cheers!!

John

Thanks. Planning to do that given the persistence of issue. I've tried those SMC NPRAM etc. stuff on the iMac already regards to the issue. That is actually how I got a completely dead iMac to work recently.

As for the dongle it's working great! no issues yet. Needs more time to be sure.

Now, if your Broadcom replacement board works. You will be able to snap the old one into a thousand pieces and ship it back to Apple in a cardboard box with a note:

APPLE, YOU SHOULD HAVE SIGNED A CONTRACT WITH ATHEROS INSTEAD OF BROADCOM.

Cheers!! John

How about that?! Not even a year trudging through Yosemite Sam, and now this. Apple is already wanting us to introduce ourselves OS X El Capitan. I dub thee, "The Captain Crunch". This will be Apple's final solution to wring out the weaklings. Nice. I'm not caving or fallin' for it this time. No upgrade necessary. Let's enjoy what we have for a change. Like more than a year. Cheers!!! 😎

jndupuis1 wrote:

How about that?! Not even a year trudging through Yosemite Sam, and now this. Apple is already wanting us to introduce ourselves OS X El Capitan. I dub thee, "The Captain Crunch". This will be Apple's final solution to wring out the weaklings. Nice. I'm not caving or fallin' for it this time. No upgrade necessary. Let's enjoy what we have for a change. Like more than a year. Cheers!!! 😎

You make yourself look more foolish with every post. This is a privately owned and operated forum. You do not have the right to say anything you want. You do not have the right to accuse Apple of intentionally crippling your machine. There are plenty of anti-Apple websites where you can vent your rage and spew your venom. Go there. In addition it’s very hard to understand why you still use Apple products. There are a myriad of inexpensive non-Apple computers available. Have you ever heard of “Stockholm Syndrome?”

My wifi also is really unstable. The last days it has been mostly disabled (Wi-Fi: No hardware installed) and I have no idea how to solve it. Hope the 10.10.4 update does. Otherwise I think I'l try to do a fresh 10.9 install.

lkrupp wrote:

"You do not have the right to say anything you want. You do not have the right to accuse Apple of intentionally crippling your machine."

Yes, I own an Apple product, an Intel computer with the Apple logo Boot Camping Windows 7 Pro for stability. Cheers!!

Goodbye!!

<Edited By Host>

I think my problems are solved... They started occurring on the same time as I upgraded to 10.10 but I think mine were hardware related.

I opened up the cover on my mbp and looked at the Airport antenna and saw 2 screws that were a bit loose. I screwed them back, rebooted and it worked...

Sorry for my late reply as I was briefly interupted by an krupps coffee brewer perking a spewing.

Good job olind. Sometimes it's the simple things that give us troubles and are easily over looked. Cheers!! 😉