Q: OSX Yosemite Wifi issues

This is unbelievably bad. Never had such problems with any other laptop. Apple please fix it soon or you will lose a customer. I am fed up with this poor quality. It is unuseable without wifi for me.  Will go back to Lenovo after all.

timmjr wrote:

 

This is unbelievably bad. Never had such problems with any other laptop. Apple please fix it soon or you will lose a customer. I am fed up with this poor quality. It is unuseable without wifi for me.  Will go back to Lenovo after all.

Making threats will get you nowhere on these forums. Go ahead, go back to Lenovo or whatever. Nobody cares what you do.

Oh my gosh, I made the huge mistake of upgrading my iMac Late 2012 from Mountain Lion to Yosemite (10.10.4) today and spent the last 10 hours trying to connect to the internet.

Tried all the fixes and workarounds (deactivating Airdrop, logging out iCloud, resetting Huawei router, resetting SMC, zapping PRAM, trashing network preferences, creating custom location, resetting  etc...) I could find on here but nothing worked. Disabling Bluetooth isn't an option due to bluetooth mouse and keyboard. When turning off/on Wi-Fi, I will get a connection for 20 seconds before it drops again. All other computers and devices are connecting fine. Ended up using the hotspot feature of my iPhone 6 so I could have a somewhat stable connection but I can't keep doing that everyday !

What's up Apple ? Never had such problems after a OS update. I thought I have been very careful with waiting months after release, but still !!

Sedde, are these large files from the same server. Maybe it isn't an issue on your end. Are you having similar issues when downloading updates from the App Store?

Paul

Well as a benchmark i always try to download 10.10.4 from both the appstore and the website, and files from my isp's ftp server which always max my download capacity.

Same room, same distance from the router, but different pc's manage to download it fine, i tried 3 macbooks, a late 2008 15" one, a mid2014 mba and my mid2014 rmbp, all of them dropped the connection on different parts of the download. i will go buy a usb network card today, this is getting ridiculous.

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.

Here is another update of the diagnosis of my problem. I will stress that this problem is connected to a certain build of the Airport Extreme Hardware. I have the version AirPort Extreme  (0x14E4, 0xEF) for the MacBook Pro 15" Retina (mid 2012). This card has only 802.11 a/b/g/n PHY modes supported.  The symptoms are as follows

• 802.11n 2.4 GHz has no problem to connect and very little drop outs
• 802.11n 5 GHz ch 36, 40, 44, 48 don't work, they connect and acquire a correct IP address but then packages don't get to the router. However, displaying the wireless settings with clicking on the Wireless symbol whilst holding the option key to display the connection details.
• 802.11n 5 GHz ch 64, 112 all work without problems as far as I can see. I assume that all channels above 52 will work as already mentioned in the forum.
  

Hence, the problem is quite localised to the lower frequencies in the 5 GHz band.

I had my Airport Extreme WiFi/Bluetooth card exchanged in the Apple Store to rule out any hardware fault. They did this for my MacBook Pro 15" Retina (mid 2012) for free whilst I was waiting. I call this quite some fair trading. Of course they can only exchange like with like. Hence I got the same version of the Airport Extreme Card (except the locale now ETSI). As both the technician an I were expecting, this didn't help at all. I also installed Mavericks OSX 10.9.5 on a USB drive and had no problem connecting to our 5 GHz low band (channel 48), where the clean install of Yosemite OSX 10.10.4 could not connect. Hence, version 5.106.98.102.22 of the Broadcom BCM43xx firmware works, whilst version 7.15.166.24.3 does not.

I find it interesting that the connection seems to start working again whilst the wireless details are requested. Maybe this is a hint to software developers what the problem is. I suspect that there may be some optimisation ongoing that fails.

I have a 2014 Retina Macbook Pro and I am experiencing very slow wifi, as well. I've tried dozens of solutions in this thread and elsewhere, including, but not limited to:

1. rebooting
2. disabling bluetooth
3. turning off network wake
4. disabling airdrop
5. resetting NVRAM
6. resetting PRAM
7. resetting SMC
8. booting into safe mode and back
9. keeping a ping running
10. resetting wifi settings
11. deleting and regenerating plist files
12. disabling my firewall
13. changing router settings, channels, MTU, etc
14. replacing kext files
15. killing discoveryd
16. running wireless diagnostics

NOTHING has worked. NONE of my other devices have this problem. NONE. The only time network speeds are normal is when I'm IN safe mode (meaning my router is not to blame), but as soon as I boot back, it's as slow as ever. This is beyond frustrating. How has this not been officially addressed yet?

Apple Support keeps removing any posts that do not comply with policy.  So I will try to reword my recommendations to comply with that policy.  Support groups are great way to fix issues :-).  Sometimes corporations'/peoples' value is based on public perception by others (Second handers, as described by Howard Roake (The Fountainhead)).  And than others.... authentic, and true, takes responsibility, their relationships are based on 2 way positive exchange, and respected.

This whole wifi issue goes behind a buggy glitch, it has altered my life.  Everything happens for a reason.  So I urge you to go further then the crickets you will experience here.  Try google search other options.

<Edited By Host>

hahahahaha....  i love optimism!  trying to stay positive myself (or I will be removed from community).  My $100 netbook seems to be the easiest, least time consuming, and cheapest fix for me!  Its ridiculous! Try going outside this forum to see what others are doing.  We can't talk about it here.

Just adding my voice in hopes of a fix. My 2013 MacBook Air routinely fails to resolve DNS after ~5 minutes of usage. Turning the Wifi OFF->ON again fixes the problem, nevertheless this never happened until a couple weeks ago when I "upgraded" to Yosemite. Hopefully this problem is resolved in El Capitan???

I thought 10.10.4 finally resolved all my wifi issues on my Macbook Air 13" Early 2014, but no, as usual, after being stable for a while, I started having connection issues again.Turning the Wifi off and on fixes the issue as usual.

Only suspicious logs I saw where these, but I doubt they are indicative of an abnormal situation.

8/9/15 9:36:56.000 PM kernel[0]: en0: BSSID changed to 6c:70:9f:dc:75:9b

8/9/15 9:36:56.000 PM kernel[0]: en0: channel changed to 149,80

While diagnosing, upon waking up the machine, I was briefly able to ping my internal machines using IP (hostnames would not resolve). The connection quickly took a turn for the worse and traffic stopped flowing.

Here is another interesting hint. Previously I wrote that I am not able to connect to the 5 GHz low band (ch 36,40,44 and 48) with my MacBook Pro 15" Retina mid 2012. This turns out not to be entirely true. It may be possible that this bug only affects channels with 40 MHz bandwidth. I was connected to an Access Point earlier that run channel 40 at  5 GHz low with 20 MHz bandwidth and this seemed to be OK. Unfortunately I can't really test this hypothesis since I can't choose the BSSID I want to connect to anymore with the airport command. Also requesting a particular channel didn't really work. It would be great if Apple would have the facility for advanced users to set things like this. Apparently this was possible before OSX 10.6. 

I ended up reverting back to Mavericks after awaiting patiently for each 10.10.x update. I feel terrible for people who bought a laptop/iMac post Yosemite as standard shipping OS. At this point, even temporarily, downgrading to Mavericks seems like a best bet (after back-up) until El Capitan .2 or .3 is out.

Have always upgraded to the newer OS right away since Tiger. This experience has really left me with cautionary tales and I will need to learn to deal with anxiety of not having the latest OS on my machine. But that is what it is. The lesser of two evils.

I hoped thad 10.10.5 would help with this wifi issues but nothing changed today after I installed the update

I am a phd student and I can't work properly because the wifi is failing that often.

At the router Side I can't change anything because thats from the university...

Maybe I should Install Windows on my Macbook until the Problem will be fixed in a uncertain future.

An USB Wifi Stick is not possible because the university uses WPA2 Enterprise auth and it seems there is no  one for this wich has mac drivers