OSX Yosemite Wifi issues

Hey people, MAKE SURE YOU LET APPLE KNOW IT'S STILL BROKEN!

Send them feedback here: http://www.apple.com/feedback/

Here's what I just sent them:

This week, I wiped my disk and did a clean install of Yosemite from a USB key

Sometimes after waking from sleep, network connectivity will become intermittent (tested by pinging my router IP address, every minute or two pings will "Request timeout" for 10 or 20 seconds, before working again for a few minutes after which the problem repeats). Once the computer has entered this state, only a reboot will (temporarily) fix the problem (toggling WiFi off and on does not help). The problem does not happen every time the computer wakes from sleep, but does happen at least once a day, so is irritating.

The problem was not present in Mavericks.

My setup:

2013 Macbook Air, 8Gb ram, 512Gb SSD

Network: 5Ghz 802.11ac WiFi

Router: Virgin media SuperHub ac

Tom AdS wrote:

Well, this one solves ALL of my networking problems - finally.

No more Wifi-Issues, no more Ethernet Issues, no more Bonjour- or DNS-Issues.

Only thing that won`t work is Airdrop between iOS 8 and Yosemite. No problem thanks to DropCopy, Instashare and others.

BTW: No problems after updating or reinstalling 10.10.2 combo ... mDNSResponder stays active.

Try it.

THX

@ TomAdS:

Well, this one solves ALL of my networking problems - finally.

If you mean to say you've effectively replaced Yosemite's Discoveryd with Maverick's mDNS responder, your testimony is very instructive indeed, and the 1st reported affirmation of its kind in this monster thread. This once more asserts that Bonjour discovery over AWLD, Airdrop, Handoff, Continuity and such (maybe even iCloud) are not working properly under some hardware setups (Mac- WiFi Router combinations). The reason why is still a mystery. But it explains the partial success of Mario Ciabarra's WifriedX, or turning off Handoff and Airdrop. Or getting new WiFi hardware. All of which have been described here.

Possibly some WiFi routers may be overloaded due to constant discovery attempts caused by Bonjour. Or maybe just too many possible iDevice / clients are within range of that WiFi router.

Or possibly some WiFi routers cannot handle "jumbo frames", thence the workaround of setting the Maximum Transmission Unit lower than the default 1500.

Anyhow: if replacing Yosemite's Discoveryd with Maverick's mDNS responder has actually worked for you, this means that Yosemite OSX is not entirely broken (in some cases/ under some hardware combinations), only the DNS resolving capabilities of Dyscoveryd within your hardware setup . Meaning only the novelties of Yosemite. Which most Yosemite users, especially those with severe issues will gladly do without. In return for basic WiFi functionality.

Also meaning users with these issues do not necessarily need to retrograde to Mavericks, which seems very difficult if Mavericks is not residing amongst previous purchases. Especially for users with a newly purchased Mac, with Yosemite preinstalled.

From: http://arstechnica.com/apple/2015/01/why-dns-in-os-x-10-10-is-broken-and-what-yo u-can-do-to-fix-it/

To effectively replace Yosemite's Discoveryd with Maverick's mDNS responder

here is the relevant part:

Restoring mDNSResponder, if you dare

First a word of warning: if something goes wrong, your Mac may not be able to boot. This can be fixed by booting in single user mode and re-enabling discoveryd (see below). Be sure you have a recent backup just in case, and only follow the steps below if you are prepared to boot into single user mode if needed.

The first thing you need to do is find copies of 10.9 mDNSResponder, mDNSResponderHelper, and their plist files. On a 10.9 system, they're found in /usr/sbin/ and /System/Library/LaunchDaemons, respectively. These Terminal commands will copy them to the desktop for easy copying to the 10.10 system on which you want to install them:

cd

~

/Desktop/

cp

/usr/sbin/mDNSResponder

.

cp

/usr/sbin/mDNSResponderHelper

.

cp

/System/Library/LaunchDaemons/com

.apple.mDNSResponder.plist .

cp

/System/Library/LaunchDaemons/com

.apple.mDNSResponderHelper.plist .

Another way to get the mDNSResponder and its helper is from a Time Machine backup. Connect your Time Machine drive or click on the backup image on your (Time Capsule) network drive. Next, navigate to a backup from before October 16, when you were still running OS X 10.9, along these lines:

cd

/Volumes/Time

Machine Backups

/Backups

.backupdb/

cd

<my machine name>

ls

cd

<

date

/time

of backup>

cd

Macintosh\ HD

cp

usr

/sbin/mDNSResponder

~

/Desktop/

cp

usr

/sbin/mDNSResponderHelper

~

/Desktop/

cp

System

/Library/LaunchDaemons/com

.apple.mDNSResponder.plist ~

/Desktop/

cp

System

/Library/LaunchDaemons/com

.apple.mDNSResponderHelper.plist ~

/Desktop/

With these preparations in place, you can copy the mDNSResponder and helper to the OS X 10.10 machine:

sudo

cp

mDNSResponder

/usr/sbin/

sudo

cp

mDNSResponderHelper

/usr/sbin/

sudo

cp

com.apple.mDNSResponder.plist

/System/Library/LaunchDaemons/

sudo

cp

com.apple.mDNSResponderHelper.plist

/System/Library/LaunchDaemons/

Then, deactivate discoveryd and activate mDNSResponder. Remember, sudo makes a command execute with root or system administrator privileges, so it asks for a system administrator password. Don’t worry if you get "Could not find specified service."

sudo

launchctl unload -w

/System/Library/LaunchDaemons/com

.apple.discoveryd.plist

sudo

launchctl unload -w

/System/Library/LaunchDaemons/com

.apple.discoveryd_helper.plist

sudo

launchctl load -w

/System/Library/LaunchDaemons/com

.apple.mDNSResponder.plist

sudo

launchctl load -w

/System/Library/LaunchDaemons/com

.apple.mDNSResponderHelper.plist

Now reboot.

Reverting is easy. Just read the rest of the article in the link.

Well, good luck with it. Sure seems a **** of a lot easier than retrograding to Mavericks or doing a reinstall of Yosemite (which will bring you no good of course).

BTW, there may be a quicker way of checking if your router ( or its firmware) may be too old: disable Bonjour/ Multicast altogether. This is an older, non-Yosemite specific trick, and will disable Handoff functionality as well, but ****, without WiFi, who cares?

http://www.farces.com/and-the-yosemite-problems-just-keep-rolling-in/

If this sounds too technical for some, I am genuinely sorry. But to the technically minded, I surely hope this might finally bring some relief. There is no use in waiting for Apple, with some other (GPU) issues, we had to wait for another 3000000 more forum views as we have and probably some class action suits until relief came. By then, your Mac will be obsolete.

Workaround not yet published in this thread:

Not particularly to you John, but to all concerned here, particularly to those who may have performed a clean install, but migrated old troubles afterward from a Time Machine backup, possibly using Migration Assistant:

Please search for IO80211Family.kext on your Mac. Especially if you have multiple copies of it, check their version numbers. There may be a clash going on here between identically named kernel extensions with different version numbers (7.1 being the most recent) . Revert to IO80211Family.kext 7.0 any way you can, and see what happens. Thrash all other versions, empty thrash and restart. And only 1 version of IO80211Family.kext should reside on your system! Even if you decide to stick to your resident v.7.1. Any duplicate antiquated kext is bound to cause havoc.

Except for 10.10.2 WiFi issue dupes: their salvation may lie in IO80211Family.kext 7.0.

Re: wifi keeps dropping since Yosemite upgrade

Kernel Extensions tend to show up very well in an Etrecheck report. Why not post one? This thread has been bereft of those mostly, whereas it should facilitate diagnoses. http://www.etresoft.com/etrecheck

Thanks PJF30 for pointing this out to me via mail!

Hi Hex

Herewith etre check report. Thanks

Problem description:

Not a specify problem today more of a status check after various “fixes” re OS X tried this past few weeks including adding “.local” to search domain, flushing DNS/uDNS, switching to openDNS, changing to HOME_GROUP from WORK_GROUP, changing from “auto” to “HOME2” in Sys Pref>Network

EtreCheck version: 2.1.8 (121)

Report generated 26 February 2015 11:49:48 GMT

Download EtreCheck from http://etresoft.com/etrecheck

Click the [Click for support] links for help with non-Apple products.

Click the [Click for details] links for more information about that line.

Hardware Information: ℹ️

MacBook Pro (13-inch, Mid 2010) (Technical Specifications)

MacBook Pro - model: MacBookPro7,1

1 2.4 GHz Intel Core 2 Duo CPU: 2-core

4 GB RAM Upgradeable

BANK 0/DIMM0

2 GB DDR3 1067 MHz ok

BANK 1/DIMM0

2 GB DDR3 1067 MHz ok

Bluetooth: Old - Handoff/Airdrop2 not supported

Wireless: en1: 802.11 a/b/g/n

Battery Health: Normal - Cycle count 375

Video Information: ℹ️

NVIDIA GeForce 320M - VRAM: 256 MB

Color LCD 1280 x 800

DELL E207WFP 1680 x 1050 @ 60 Hz

System Software: ℹ️

OS X 10.10.2 (14C109) - Time since boot: one day 12:20:21

Disk Information: ℹ️

Samsung SSD 840 EVO 250GB disk0 : (250.06 GB)

EFI (disk0s1) <not mounted> : 210 MB

MacPJ (disk0s2) / : 249.20 GB (44.69 GB free)

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

MATSHITADVD-R UJ-898

USB Information: ℹ️

Apple Inc. Built-in iSight

Apple Internal Memory Card Reader

Apple Inc. BRCM2046 Hub

Apple Inc. Bluetooth USB Host Controller

Apple Computer, Inc. IR Receiver

Apple Inc. Apple Internal Keyboard / Trackpad

Gatekeeper: ℹ️

Mac App Store and identified developers

Kernel Extensions: ℹ️

/System/Library/Extensions

[not loaded] com.silex.driver.sxuptp (1.4.3) [Click for support]

Launch Agents: ℹ️

[failed] com.brother.LOGINserver.plist [Click for support]

[loaded] com.oracle.java.Java-Updater.plist [Click for support]

Launch Daemons: ℹ️

[loaded] com.adobe.fpsaud.plist [Click for support]

[loaded] com.microsoft.office.licensing.helper.plist [Click for support]

[loaded] com.oracle.java.Helper-Tool.plist [Click for support]

[loaded] com.oracle.java.JavaUpdateHelper.plist [Click for support]

User Launch Agents: ℹ️

[loaded] com.adobe.ARM.[...].plist [Click for support]

User Login Items: ℹ️

WePrint Server Application Hidden (/Applications/WePrint Server.app)

Dropbox Application (/Applications/Dropbox.app)

InstUtilLaunch UNKNOWN (missing value)

Internet Plug-ins: ℹ️

o1dbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]

Default Browser: Version: 600 - SDK 10.10

Flip4Mac WMV Plugin: Version: 3.2.0.16 - SDK 10.8 [Click for support]

Silverlight: Version: 5.1.10411.0 - SDK 10.6 [Click for support]

FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]

Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]

QuickTime Plugin: Version: 7.7.3

googletalkbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]

SharePointBrowserPlugin: Version: 14.4.7 - SDK 10.6 [Click for support]

SquareClock_Production_HBMV1: Version: 34c0760001cf44ed

iPhotoPhotocast: Version: 7.0 - SDK 10.8

JavaAppletPlugin: Version: Java 8 Update 31 Check version

User internet Plug-ins: ℹ️

Google Earth Web Plug-in: Version: 7.1 [Click for support]

Safari Extensions: ℹ️

Save to Pocket

eWallet AutoPass

Facebook Improved

3rd Party Preference Panes: ℹ️

Flash Player [Click for support]

Flip4Mac WMV [Click for support]

Java [Click for support]

Time Machine: ℹ️

Skip System Files: NO

Mobile backups: ON

Auto backup: YES

Volumes being backed up:

MacPJ: Disk size: 249.20 GB Disk used: 204.51 GB

Destinations:

Time Machine Backups [Local]

Total size: 600.00 GB

Total number of backups: 75

Oldest backup: 2014-03-31 23:23:01 +0000

Last backup: 2015-02-25 21:18:55 +0000

Size of backup disk: Too small

Backup size 600.00 GB < (Disk used 204.51 GB X 3)

Top Processes by CPU: ℹ️

12% WindowServer

0% WePrint Server

0% fontd

0% NotificationCenter

0% AppleSpell

Top Processes by Memory: ℹ️

103 MB Safari

103 MB Mail

90 MB softwareupdated

69 MB mds_stores

69 MB Microsoft Excel

Virtual Memory Information: ℹ️

333 MB Free RAM

1.46 GB Active RAM

1.16 GB Inactive RAM

765 MB Wired RAM

10.39 GB Page-ins

363 MB Page-outs

Diagnostics Information: ℹ️

Feb 24, 2015, 11:28:54 PM Self test - passed

Feb 24, 2015, 08:49:17 AM /Library/Logs/DiagnosticReports/Microsoft Word_2015-02-24-084917_[redacted].cpu_resource.diag [Click for details]

Feb 24, 2015, 08:37:22 AM /Library/Logs/DiagnosticReports/com.apple.AmbientDisplayAgent_2015-02-24-083722 _[redacted].crash

Feb 23, 2015, 01:22:01 PM /Library/Logs/DiagnosticReports/WindowServer_2015-02-23-132201_[redacted].cpu_r esource.diag [Click for details]

Huss417 wrote:

"Try updating to OS X 10.10.2 from the Mac App Store, it addresses different WiFi issues."

This truly just made me laugh out loud. If anything 10.10.2 made the issue worse for me.

That's exactly why I posted this early last morning:

Workaround not yet published in this thread:

Not particularly to you John, but to all concerned here, particularly to those who may have performed a clean install, but migrated old troubles afterward from a Time Machine backup, possibly using Migration Assistant:

Please search for IO80211Family.kext on your Mac. Especially if you have multiple copies of it, check their version numbers. There may be a clash going on here between identically named kernel extensions with different version numbers (7.1 being the most recent) . Revert to IO80211Family.kext 7.0 any way you can, and see what happens. Thrash all other versions, empty thrash and restart. And only 1 version of IO80211Family.kext should reside on your system! Even if you decide to stick to your resident v.7.1. Any duplicate antiquated kext is bound to cause havoc.

Except for 10.10.2 WiFi issue dupes: their salvation may lie in IO80211Family.kext 7.0.

Re: wifi keeps dropping since Yosemite upgrade

In particular if you have not cleanly installed 10.10.2 and have migrated from 10.10.1 using Migration Assistant look for 2 versions of IO80211Family.kext. If you find both v.7.0 and v. 7.1, then delete v. 7.1. If you find only v.7.1, replace it with v. 7.0 and see if things improve. Good luck!

Hello Hex, Here is what etrecheck took of my system. I am running Yosemite 10.10.2 off of my WD ext. HD. I have Keychain set up and am using Firefox as my non default rogue browser. So far I'm still in the game with this thing. Wake up from sleep checks good, Airdrop checks good and Bluetooth is fine. Wif-Fi is holding stable through it all. I still will not let go of Mavericks it is on the primary HD, just can't let go of it.

EtreCheck version: 2.1.8 (121)

Report generated February 26, 2015 at 9:47:42 PM CST

Download EtreCheck from http://etresoft.com/etrecheck

Click the [Click for support] links for help with non-Apple products.

Click the [Click for details] links for more information about that line.

Hardware Information: ℹ️

Mac mini (Late 2012) (Technical Specifications)

Mac mini - model: Macmini6,1

1 2.5 GHz Intel Core i5 CPU: 2-core

4 GB RAM Upgradeable

BANK 0/DIMM0

2 GB DDR3 1600 MHz ok

BANK 1/DIMM0

2 GB DDR3 1600 MHz ok

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: en1: 802.11 a/b/g/n

Video Information: ℹ️

Intel HD Graphics 4000

Thunderbolt Display 2560 x 1440

System Software: ℹ️

OS X 10.10.2 (14C109) - Time since boot: 0:5:48

Disk Information: ℹ️

APPLE HDD ST500LM012 disk0 : (500.11 GB)

EFI (disk0s1) <not mounted> : 210 MB

Macintosh HD (disk0s2) /Volumes/Macintosh HD : 350.25 GB (319.92 GB free)

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

BOOTCAMP (disk0s4) /Volumes/BOOTCAMP : 149.00 GB (51.14 GB free)

USB Information: ℹ️

LaCie Rugged THB USB 3.0 1 TB

EFI (disk1s1) <not mounted> : 210 MB

LaCie (disk1s2) /Volumes/LaCie : 839.86 GB (835.69 GB free)

Windows Data (disk1s3) /Volumes/Windows Data : 80.00 GB (71.58 GB free)

My Time Machine (disk1s4) /Volumes/My Time Machine : 79.73 GB (52.22 GB free)

Western Digital My Passport 07B8 1 TB

EFI (disk2s1) <not mounted> : 210 MB

Macintosh HD II (disk2s2) / : 499.43 GB (482.54 GB free)

Recovery HD (disk2s3) <not mounted> [Recovery]: 650 MB

WD Passport for Mac (disk2s4) /Volumes/WD Passport for Mac : 499.74 GB (499.29 GB free)

Apple Inc. MacBook Air SuperDrive

Apple, Inc. Keyboard Hub

Apple Inc. Apple Keyboard

Apple, Inc. IR Receiver

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller

Apple Inc. FaceTime HD Camera (Display)

Apple Inc. Apple Thunderbolt Display

Apple Inc. Display Audio

Thunderbolt Information: ℹ️

Apple Inc. thunderbolt_bus

Apple Inc. Thunderbolt Display

Gatekeeper: ℹ️

Mac App Store and identified developers

Launch Daemons: ℹ️

[loaded] com.adobe.fpsaud.plist [Click for support]

User Login Items: ℹ️

None

Internet Plug-ins: ℹ️

FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]

Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]

QuickTime Plugin: Version: 7.7.3

Default Browser: Version: 600 - SDK 10.10

3rd Party Preference Panes: ℹ️

Flash Player [Click for support]

Time Machine: ℹ️

Time Machine not configured!

Top Processes by CPU: ℹ️

25% mds_stores

5% WindowServer

0% fontd

0% AppleSpell

0% mds

Top Processes by Memory: ℹ️

176 MB com.apple.WebKit.WebContent

129 MB mds_stores

69 MB ocspd

60 MB Safari

52 MB WindowServer

Virtual Memory Information: ℹ️

1.43 GB Free RAM

1.82 GB Active RAM

396 MB Inactive RAM

643 MB Wired RAM

933 MB Page-ins

0 B Page-outs

Diagnostics Information: ℹ️

Feb 26, 2015, 09:41:03 PM Self test - passed

Hex,

In comparison, you can see here that my Primary HD OS X Mavericks is healthy as well. Just note how CPU and RAM hungry Yosemite was in my previous Etrecheck as compared to Mavericks. Good Stuff, man!

EtreCheck version: 2.1.8 (121)

Report generated February 27, 2015 at 10:26:04 AM CST

Download EtreCheck from http://etresoft.com/etrecheck

Click the [Click for support] links for help with non-Apple products.

Click the [Click for details] links for more information about that line.

Hardware Information: ℹ️

Mac mini (Late 2012) (Technical Specifications)

Mac mini - model: Macmini6,1

1 2.5 GHz Intel Core i5 CPU: 2-core

4 GB RAM Upgradeable

BANK 0/DIMM0

2 GB DDR3 1600 MHz ok

BANK 1/DIMM0

2 GB DDR3 1600 MHz ok

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: en1: 802.11 a/b/g/n

Video Information: ℹ️

Intel HD Graphics 4000

Thunderbolt Display 2560 x 1440

System Software: ℹ️

OS X 10.9.5 (13F34) - Time since boot: 0:4:14

Disk Information: ℹ️

APPLE HDD ST500LM012 disk0 : (500.11 GB)

EFI (disk0s1) <not mounted> : 210 MB

Macintosh HD (disk0s2) / : 350.25 GB (319.42 GB free)

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

BOOTCAMP (disk0s4) /Volumes/BOOTCAMP : 149.00 GB (51.14 GB free)

USB Information: ℹ️

Western Digital My Passport 07B8 1 TB

EFI (disk2s1) <not mounted> : 210 MB

Macintosh HD II (disk2s2) /Volumes/Macintosh HD II : 499.43 GB (482.78 GB free)

Recovery HD (disk2s3) <not mounted> [Recovery]: 650 MB

WD Passport for Mac (disk2s4) /Volumes/WD Passport for Mac : 499.74 GB (499.29 GB free)

LaCie Rugged THB USB 3.0 1 TB

EFI (disk1s1) <not mounted> : 210 MB

LaCie (disk1s2) /Volumes/LaCie : 839.86 GB (835.69 GB free)

Windows Data (disk1s3) /Volumes/Windows Data : 80.00 GB (71.58 GB free)

My Time Machine (disk1s4) /Volumes/My Time Machine : 79.73 GB (52.05 GB free)

Apple Inc. MacBook Air SuperDrive

Apple, Inc. Keyboard Hub

Apple Inc. Apple Keyboard

Apple, Inc. IR Receiver

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller

Apple Inc. Apple Thunderbolt Display

Apple Inc. FaceTime HD Camera (Display)

Apple Inc. Display Audio

Thunderbolt Information: ℹ️

Apple Inc. thunderbolt_bus

Apple Inc. Thunderbolt Display

Gatekeeper: ℹ️

Mac App Store and identified developers

Launch Daemons: ℹ️

[loaded] com.adobe.fpsaud.plist [Click for support]

[loaded] com.microsoft.office.licensing.helper.plist [Click for support]

User Login Items: ℹ️

None

Internet Plug-ins: ℹ️

SharePointBrowserPlugin: Version: 14.4.8 - SDK 10.6 [Click for support]

FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]

Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]

QuickTime Plugin: Version: 7.7.3

Default Browser: Version: 537 - SDK 10.9

3rd Party Preference Panes: ℹ️

Flash Player [Click for support]

Time Machine: ℹ️

Auto backup: YES

Volumes being backed up:

Macintosh HD: Disk size: 350.25 GB Disk used: 30.83 GB

Destinations:

My Time Machine [Local]

Total size: 79.73 GB

Total number of backups: 13

Oldest backup: 2015-02-04 01:51:39 +0000

Last backup: 2015-02-27 16:18:46 +0000

Size of backup disk: Too small

Backup size 79.73 GB < (Disk used 30.83 GB X 3)

Top Processes by CPU: ℹ️

8% mds_stores

8% mds

4% WindowServer

0% SystemUIServer

0% AppleSpell

Top Processes by Memory: ℹ️

163 MB mds_stores

82 MB com.apple.IconServicesAgent

47 MB Dock

39 MB mds

39 MB ocspd

Virtual Memory Information: ℹ️

2.02 GB Free RAM

1.14 GB Active RAM

394 MB Inactive RAM

736 MB Wired RAM

390 MB Page-ins

0 B Page-outs

Diagnostics Information: ℹ️

Feb 27, 2015, 10:21:10 AM Self test - passed

Something else maybe; unlikely blast from the past. Workaround never published and easily tried, even for non-technical users:

AirPort: Can Connect to Base Station But Not to Internet When Using PPPoE - Apple Support

Please for testing purposes switch off PPPoE ( Point-to-Point-over-Ethernet, rarely used anymore http://en.wikipedia.org/wiki/Point-to-point_protocol_over_Ethernet) in System Preferences> Network > Advanced.

Seems like just the antiquity which might interfere sometimes...

Update/ edit: the update for the first link was edited by Apple only today, so mind carefully what is being written. Yosemite might loosen its tether here... at last!

Fingers crossed.

Huss417 wrote:

What update? I had a security update yesterday but that was all.

Beta OSX versions do not get security updates. The security update you mention (Security Update 2015-002) will mainly have been against the FREAK vulnerability ' "FREAK" SSL/TLS exploit (CVE-2015-0204)', which is totally offtopic here.

http://arstechnica.com/apple/2015/03/apple-patches-freak-vulnerability-on-mounta in-lion-mavericks-yosemite/

Sorry for the offtopic.

They are funny!!!!

The Version I was referring to is the public one!!!! and not Registered. Apple wake up and read what your customers are writing !!!!!

Huss417Mar 19, 2015 5:36 PM Re: OSX Yosemite Wifi issues
Re: OSX Yosemite Wifi issuesin response to nhcowboy

So all you happy people. Is this based on 10.10.3? If so it can't get here fast enough for me.

Glad to hear there is soon to be light at the end of the tunnel.

Yes to Huss417. Soooooo much better and nothing all like the problems I had before!

Hi PJF30, If I'm correct, Tomato, OpenWRT or DD-WRT compatible routers are routers that can be flashed to these alternative firmware versions. If properly flashed, these will allow Greenfield mode on these routers to be switched off and GF-BRCM mode to be chosen instead, so as to better accomodate the Broadcom card in your Mac. Mixed Mode may show an improvement as well.

Thank you, Simen in this topic for this tip on page 194!

simenMar 25, 2015 11:06 AM
Re: OSX Yosemite Wifi issuesin response to simen

This made my 5GHz work to (got no IP before). If your router has the ability to disable Greenfield for GF-BRCM or Mixed Mode try that... Worked for ALL the machines on work so should work for you to.

simen wrote:

I discovered that Yosemite doesn't like "802.11n Preamble" set to Greenfield... Shouldn't be a problem usually, but looks like the drivers doesn't like it. So set it to "GF-BRCM" or "Mixed Mode". This might also fix 5GHz troubles (will test this at work where I have a 5GHz AP).

Before when I had to Greenfield I got 6/7 (TX/RX) Mbit, but now I get 144/144.

Before I figured this out I also found another "workaround" and that was to force the "Transmission Rate" to 54Mbit (better than 6), but that lead to a decrease of on my other N-devices that doesn't behave buggy.

Care to expand on the method of flashing firmware? Anyhow, I have a suspicion this may solve the issue with WPA Enterprise passwords as well.

Let me quote my summary on page 196 here:

Latest suspicion has been launched by forum member "simen", who has definitely educated us to the existence of the WiFi preambles:Legacy, Mixed Mode, Greenfield, and GF-BRCM (Greenfield-Broadcom) (last 2 are "High throughput", +54 kbps WiFi modes, probably supporting Jumbo Frames, not allowing anything except n-only WiFi networks, possible cause of some of the Yosemite WiFi troubles in combination with some WiFi routers ).

These questions then remain:

- does your router support Greenfield or Greenfield-Broadcom protocol?

- does your router support Jumbo Frames? ( this probably has to do with the already mentioned Maximum Transmission Unit being greater than 1450).- Setting MTU lower than 1450 has been known to work around the Yosemite WiFi bug in some cases.

-Is Greenfield colliding with GF-BRCM on some routers?

OK people, feel free to comment. Seems we will have to DIY here...

Caveat: in order to flash your router to a new firmware version, you really have to know what you are about.

As far as the Bluetooth and WiFi interference (on the 2.4 GHz band, of course) is concerned: if you are uncouth enough, you might try this Terminal command:

sudo defaults write /Library/Preferences/com.apple.airport.bt.plist bluetoothCoexMgmt Hybrid

This Hybrid Mode may be able to let Bluetooth and WiFi coexist on the same set of antennae/ the same Broadcom card. If you type in this command, you will have to issue your Admin/Root password as well. Thank you BushidoUK on page 17 of wifi keeps dropping since Yosemite upgrade for this tip!

There you are, 3 sets of variables to play with, all centered around your Broadcom card and antenna setup. And don't tell me this is getting complicated...

For Yosemite users having problems in large, enterprise wireless networks this is an interesting post : How does OSX 10.10.2 handle 802.11h Power Constraint Information Element

summary: There is a bug in Yosemite WRT to the Wi-Fi 802.11h standard. Even home users with advanced wireless AP's / routers with 802.11h Power Constraint (other terms like power balance might be used) enabled might benefit from turning this off.

IT might be even the case they suffer because neighbouring AP's have this feature enabled :-(

Hold your horses, John! Are you pretty sure what you have seen at work was not simply Spotlight re-indexing? It will touch all your files for sure. MobileDeviceManagement worker is the associated process, to be seen in System Profiler.

And another blatant one we must have missed all along this long thread: a major network change in Yosemite, according to the master authority Linc Davis @ DNS overrides not working in Yosimite:

The "local" TopLevelDomain is reserved for Bonjour and shouldn't be used for unicast DNS. It seems that Yosemite enforces that restriction where earlier versions of OS X did not.

(redacted to expand TLD to TopLevelDomain)

I am trying to put the question to Mr. Linc Davis as we speak: "how do we keep Yosemite from using TLD names for Unicast DNS on some problematic WiFi routers?"

There may lie the cause of many Discoveryd malfunctions. Well, touch wood.

you guys seem to not take my "Russian locale" solution seriously, and try to invent god knows what involved workarounds with scripting and what not! Just try setting the locale to Russia right after install. I have just copied 200Gb over wi-fi, several hours not one dropout. And that is how it used to work all the time for me on my Retina Macbook pro. But for the several hours I was trying out the US locale, I had like 20 wifi drops at least.

Maybe its NSA PRISMA backdoors auto-activate for American users, I do not know... =)

Alex, you may have touched upon a very valid point here. Although it seems Airport channel choice is supposed to be automatic all over the globe, and channel choice will autorestrict to common allowed frequencies (for example when traveling), there still are local frequency, transmit power and channel width restrictions. Maybe it would be interesting if all the plaintiffs here check their local frequency restrictions, and make sure the country codes ( see System Profiler) of their Mac and their base stations/ cable/ ADSL modem (refer to manual) align.

BTW: I believe Apple is breaking many local laws by using 40 MHz channel width. But in fact, they do not recommend it. See second link.

Lately I've seen registered Dutch Apple users expressing their amazement their Mac was running on German Airport card country codes. That seems to work, but maybe not on all hardware WiFi network components/ combinations or with all ISPs?

Hopefully not adding to the confusion in this thread: a list of allowed WLAN channels: http://en.wikipedia.org/wiki/List_of_WLAN_channels

And yet another very important Apple link concerning WiFi: Recommended settings for Wi-Fi routers and access points - Apple Support

Spasiba, stare moi! (hope this not Slovenian instead of Russian and sorry, but the Cyrillic alphabet is not installed on my Mac).