Dropping Wi-Fi

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Dropping Wi-Fi

Charles Hawkins
All,

I’ve lately been running into an issue where my MBP drops the WiFi connection.  The worst thing is that the menu bar drop down says it is still connected, so I kept thinking that my local carrier was having internet glitches or something.  Within the past week, I discovered that it is limited to the one Mac—not my other Mac or the WIN game machine.  And I finally realized that if I turn WiFi off and then back on again (on the Mac), it reconnects and everything is AOK.

Have any of you heard of this sort of thing?  Is it possibly a memory issue?  My MBP has 16 GB, but it tends to get used up because (1) I leave a lot of apps running and (2) FireFox is a real memory hog; I sometimes have to make it quit so that it will release the memory.

System info:  MBP 15” “Retina”, 2012 version, OSX 10.9.5

Thanks for any thoughts,

Chuck

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Re: Dropping Wi-Fi

Al Varnell
This is a common complaint with Yosemite through 10.10.3, but so much with Mavericks.

I don't believe it could have anything to do with Memory. To verify, open Activity Monitor->Memory tab and scroll to the bottom. If the MEMORY PRESSURE gauge doesn't go red, you should be OK there.

It could be a DNS issue (System Preferences->Network->Advanced... Button->DNS tab).  If you are using your ISP default try Google Public DNS (8.8.8.8 & 8.8.4.4) or OpenDNS.

Perhaps your ISP's IPv6 implementation is less than perfect. Try resetting to Link-Local Only.

Sent from Janet's iPad

-Al-

On Jun 11, 2015, at 3:10 PM, Charles Hawkins <[hidden email]> wrote:
> I’ve lately been running into an issue where my MBP drops the WiFi connection.  The worst thing is that the menu bar drop down says it is still connected, so I kept thinking that my local carrier was having internet glitches or something.  Within the past week, I discovered that it is limited to the one Mac—not my other Mac or the WIN game machine.  And I finally realized that if I turn WiFi off and then back on again (on the Mac), it reconnects and everything is AOK.
>
> Have any of you heard of this sort of thing?  Is it possibly a memory issue?  My MBP has 16 GB, but it tends to get used up because (1) I leave a lot of apps running and (2) FireFox is a real memory hog; I sometimes have to make it quit so that it will release the memory.
>
> System info:  MBP 15” “Retina”, 2012 version, OSX 10.9.5
>
> Thanks for any thoughts,
>
> Chuck



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Re: Dropping Wi-Fi

Josh Centers
The problem is that Apple replaced the reliable mDNSResponder DNS service with discoveryd in Yosemite, which has caused all sorts of network problems.

The good news is that Apple is reverting back to mDNSResponder in 10.10.4 and El Capitan.

For now, there isn’t a good solution, other than to install the betas that ditch discoveryd.

> On Jun 11, 2015, at 6:03 PM, Al Varnell <[hidden email]> wrote:
>
> This is a common complaint with Yosemite through 10.10.3, but so much with Mavericks.
>
> I don't believe it could have anything to do with Memory. To verify, open Activity Monitor->Memory tab and scroll to the bottom. If the MEMORY PRESSURE gauge doesn't go red, you should be OK there.
>
> It could be a DNS issue (System Preferences->Network->Advanced... Button->DNS tab).  If you are using your ISP default try Google Public DNS (8.8.8.8 & 8.8.4.4) or OpenDNS.
>
> Perhaps your ISP's IPv6 implementation is less than perfect. Try resetting to Link-Local Only.

---
Josh Centers
Managing Editor - TidBITS
http://TidBITS.com
http://joshcenters.com
@jcenters




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Re: Dropping Wi-Fi

John Robinson-3
The discoveryd situation is weird. I continue to have NO issues with Wi-Fi connections and basic syncing of my iPhone4, iPad Air to my iMac iTunes12.

I haven’t had the failures others experience w Wi-Fi syncing since Mavericks.

27” iMac14,2, Yosemite, iPad Air iOS 8.3.

Aside from Wi-Fi issues, iTunes12 continues to drop audiobook covers on my iPad Air. I wiped the iPad Air to new this week and manually added everything back. One audiobook cover continues to become blank on the iPad Air. All audiobooks are designated audiobook in GetInfo, Options.

 

> On Jun 11, 2015, at 6:14 PM 🌙, Josh Centers <[hidden email]> wrote:
>
> The problem is that Apple replaced the reliable mDNSResponder DNS service with discoveryd in Yosemite, which has caused all sorts of network problems.
>
> The good news is that Apple is reverting back to mDNSResponder in 10.10.4 and El Capitan.
>
> For now, there isn’t a good solution, other than to install the betas that ditch discoveryd.
>
>> On Jun 11, 2015, at 6:03 PM, Al Varnell <[hidden email]> wrote:
>>
>> This is a common complaint with Yosemite through 10.10.3, but so much with Mavericks.
>>
>> I don't believe it could have anything to do with Memory. To verify, open Activity Monitor->Memory tab and scroll to the bottom. If the MEMORY PRESSURE gauge doesn't go red, you should be OK there.
>>
>> It could be a DNS issue (System Preferences->Network->Advanced... Button->DNS tab).  If you are using your ISP default try Google Public DNS (8.8.8.8 & 8.8.4.4) or OpenDNS.
>>
>> Perhaps your ISP's IPv6 implementation is less than perfect. Try resetting to Link-Local Only.
>
> ---
> Josh Centers
> Managing Editor - TidBITS
> http://TidBITS.com
> http://joshcenters.com
> @jcenters
>
>
>
>
> ____________TidBITS Talk Participation Guidelines____________
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Re: Dropping Wi-Fi

Charles Hawkins
In reply to this post by Josh Centers
OK, but remember I’m running Mavericks (10.9.5), not Yosemite!

Did Apple put discoveryd in updates to Mavericks?

Chuck

On Jun 11, 2015, at 7:14 PM, Josh Centers <[hidden email]<mailto:[hidden email]>> wrote:

The problem is that Apple replaced the reliable mDNSResponder DNS service with discoveryd in Yosemite, which has caused all sorts of network problems.

The good news is that Apple is reverting back to mDNSResponder in 10.10.4 and El Capitan.

For now, there isn’t a good solution, other than to install the betas that ditch discoveryd.

On Jun 11, 2015, at 6:03 PM, Al Varnell <[hidden email]<mailto:[hidden email]>> wrote:

This is a common complaint with Yosemite through 10.10.3, but so much with Mavericks.

I don't believe it could have anything to do with Memory. To verify, open Activity Monitor->Memory tab and scroll to the bottom. If the MEMORY PRESSURE gauge doesn't go red, you should be OK there.

It could be a DNS issue (System Preferences->Network->Advanced... Button->DNS tab).  If you are using your ISP default try Google Public DNS (8.8.8.8 & 8.8.4.4) or OpenDNS.

Perhaps your ISP's IPv6 implementation is less than perfect. Try resetting to Link-Local Only.

---
Josh Centers
Managing Editor - TidBITS
http://TidBITS.com
http://joshcenters.com
@jcenters




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Re: Dropping Wi-Fi

Al Varnell
In reply to this post by Josh Centers
No that’s not the problem.  OP is running Mavericks.

-Al-

On Thu, Jun 11, 2015 at 04:14 PM, Josh Centers wrote:

>
> The problem is that Apple replaced the reliable mDNSResponder DNS service with discoveryd in Yosemite, which has caused all sorts of network problems.
>
> The good news is that Apple is reverting back to mDNSResponder in 10.10.4 and El Capitan.
>
> For now, there isn’t a good solution, other than to install the betas that ditch discoveryd.
>
>> On Jun 11, 2015, at 6:03 PM, Al Varnell <[hidden email]> wrote:
>>
>> This is a common complaint with Yosemite through 10.10.3, but so much with Mavericks.
>>
>> I don't believe it could have anything to do with Memory. To verify, open Activity Monitor->Memory tab and scroll to the bottom. If the MEMORY PRESSURE gauge doesn't go red, you should be OK there.
>>
>> It could be a DNS issue (System Preferences->Network->Advanced... Button->DNS tab).  If you are using your ISP default try Google Public DNS (8.8.8.8 & 8.8.4.4) or OpenDNS.
>>
>> Perhaps your ISP's IPv6 implementation is less than perfect. Try resetting to Link-Local Only.



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Re: Dropping Wi-Fi

Al Varnell
In reply to this post by John Robinson-3
I have never had any of those issues either, but I know dozens of others who have had a variety of problems which are being blamed on discoveryd.  Based on those rumors, Apple agrees that at least some of those issues appearing for some users cannot currently be fixed in discoveryd.  

Reverting to mDNSResponder is not as easy as most people think, however, since it must be upgraded to support all the new Yosemite features (mostly Continuity which must be made to work with the version of discoveryd that currently comes with iOS 8).  Continuity is the keystone feature or Yosemite and iOS 8 and if that get’s screwed up then everybody is going to wait on El Capitan and iOS 9.

-Al-

On Thu, Jun 11, 2015 at 04:32 PM, John Robinson wrote:

>
> The discoveryd situation is weird. I continue to have NO issues with Wi-Fi connections and basic syncing of my iPhone4, iPad Air to my iMac iTunes12.
>
> I haven’t had the failures others experience w Wi-Fi syncing since Mavericks.
>
> 27” iMac14,2, Yosemite, iPad Air iOS 8.3.
>
> Aside from Wi-Fi issues, iTunes12 continues to drop audiobook covers on my iPad Air. I wiped the iPad Air to new this week and manually added everything back. One audiobook cover continues to become blank on the iPad Air. All audiobooks are designated audiobook in GetInfo, Options.
>
>
>
>> On Jun 11, 2015, at 6:14 PM 🌙, Josh Centers <[hidden email]> wrote:
>>
>> The problem is that Apple replaced the reliable mDNSResponder DNS service with discoveryd in Yosemite, which has caused all sorts of network problems.
>>
>> The good news is that Apple is reverting back to mDNSResponder in 10.10.4 and El Capitan.
>>
>> For now, there isn’t a good solution, other than to install the betas that ditch discoveryd.
>>
>>> On Jun 11, 2015, at 6:03 PM, Al Varnell <[hidden email]> wrote:
>>>
>>> This is a common complaint with Yosemite through 10.10.3, but so much with Mavericks.
>>>
>>> I don't believe it could have anything to do with Memory. To verify, open Activity Monitor->Memory tab and scroll to the bottom. If the MEMORY PRESSURE gauge doesn't go red, you should be OK there.
>>>
>>> It could be a DNS issue (System Preferences->Network->Advanced... Button->DNS tab).  If you are using your ISP default try Google Public DNS (8.8.8.8 & 8.8.4.4) or OpenDNS.
>>>
>>> Perhaps your ISP's IPv6 implementation is less than perfect. Try resetting to Link-Local Only.
>>
>> ---
>> Josh Centers
>> Managing Editor - TidBITS
>> http://TidBITS.com
>> http://joshcenters.com
>> @jcenters
>>
>>
>>
>>
>> ____________TidBITS Talk Participation Guidelines____________
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>> Be polite and constructive, and comment on posts, not people.
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>
>
>
>
> ____________TidBITS Talk Participation Guidelines____________
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-Al-
--
Al Varnell
Mountain View, CA







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Re: Dropping Wi-Fi

Al Varnell
In reply to this post by Charles Hawkins
No.  As I said before, the kind of issue you described became common in Yosemite and from reports and rumors, it seems Apple is ready to agree that discoveryd is the root cause.

Just not in your case.

-Al-

On Thu, Jun 11, 2015 at 04:57 PM, Charles Hawkins wrote:
>
> Did Apple put discoveryd in updates to Mavericks?



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Re: Dropping Wi-Fi

Randy B. Singer
In reply to this post by Charles Hawkins

On Jun 11, 2015, at 3:10 PM, Charles Hawkins wrote:

> Have any of you heard of this sort of thing?

Yes.  Have a look at this article:

<http://www.macissues.com/2014/10/31/fix-or-help-stem-wi-fi-connectivity-problems-in-os-x/>


___________________________________________
Randy B. Singer
Co-author of The Macintosh Bible (4th, 5th, and 6th editions)

Macintosh OS X Routine Maintenance
http://www.macattorney.com/ts.html
___________________________________________






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Re: Dropping Wi-Fi

Charles Hawkins
Huh, interesting.  I’ll explore that some more.  Right now the WiFi router I’m using is built into the internet router from my provider, so I don’t have a lot of control over it, other than resetting.  Have to look into that.

Thanks,

Chuck

On Jun 11, 2015, at 8:56 PM, Randy B. Singer <[hidden email]<mailto:[hidden email]>> wrote:


On Jun 11, 2015, at 3:10 PM, Charles Hawkins wrote:

Have any of you heard of this sort of thing?

Yes.  Have a look at this article:

<http://www.macissues.com/2014/10/31/fix-or-help-stem-wi-fi-connectivity-problems-in-os-x/>


___________________________________________
Randy B. Singer
Co-author of The Macintosh Bible (4th, 5th, and 6th editions)

Macintosh OS X Routine Maintenance
http://www.macattorney.com/ts.html
___________________________________________




Charles E. Hawkins                                  Ask Questions
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Re: Dropping Wi-Fi

Charles M. Sklar
In reply to this post by Charles Hawkins
On Thu, Jun 11, 2015 at 7:57 PM, Charles Hawkins <[hidden email]> wrote:

> Did Apple put discoveryd in updates to Mavericks?
>

No. Your problem is something else. Although not stated, I assume that
sometime early on you restarted your MBP to see if the problem would
evaporate.

Seems to me you can rule out your ISP as being the source of the problem
*for now* since your other computers are not dropping Wi-Fi. Explore the
potential of a DNS issue, as Al suggested earlier. If you eliminate DNS as
being the culprit, see if the WiFi issue exists with a different user
account—create a new account if need be.

--
Chuck


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Re: Dropping Wi-Fi

Doug Hogg
In reply to this post by Charles Hawkins
A client with an AT&T modem/router kept losing wifi connection, so we changed its settings and added an AirPort Extreme which stabilized the wifi.

:-)

Doug Hogg

Sent from my iPhone

> On Jun 11, 2015, at 6:01 PM, Charles Hawkins <[hidden email]> wrote:
>
> Huh, interesting.  I’ll explore that some more.  Right now the WiFi router I’m using is built into the internet router from my provider, so I don’t have a lot of control over it, other than resetting.  Have to look into that.
>
> Thanks,
>
> Chuck
>
> On Jun 11, 2015, at 8:56 PM, Randy B. Singer <[hidden email]<mailto:[hidden email]>> wrote:
>
>
> On Jun 11, 2015, at 3:10 PM, Charles Hawkins wrote:
>
> Have any of you heard of this sort of thing?
>
> Yes.  Have a look at this article:
>
> <http://www.macissues.com/2014/10/31/fix-or-help-stem-wi-fi-connectivity-problems-in-os-x/>
>
>
> ___________________________________________
> Randy B. Singer
> Co-author of The Macintosh Bible (4th, 5th, and 6th editions)
>
> Macintosh OS X Routine Maintenance
> http://www.macattorney.com/ts.html
> ___________________________________________
>
>
>
>
> Charles E. Hawkins                                  Ask Questions
> Professor Emeritus of Physics                Seek Answers
> Department of Physics and Geology       Question the Answers
> Northern Kentucky University Question the Questions
> Highland Heights, Kentucky
> Phone:    859-572-0925
> FAX:        859-572-6092
>
>
>
>
>
>
>
>
>
>
>
>
>
> ____________TidBITS Talk Participation Guidelines____________
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Re: Dropping Wi-Fi

Ryoichi Morita-2
In reply to this post by Charles Hawkins
> On Jun 11, 2015, at 6:01 PM, Charles Hawkins <[hidden email]> wrote:
>
> Huh, interesting.  I’ll explore that some more.  Right now the WiFi router I’m using is built into the internet router from my provider, so I don’t have a lot of control over it, other than resetting.  Have to look into that.
>
 
Have you called the tech support of your ISP? Sometimes, they can run some diagnostic tests and reset the unit over the phone. I’ve had to call my ISP a couple of times to “unstick” my unit.
 
Ryoichi Morita


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Re: Dropping Wi-Fi

Charles Hawkins
Ryoichi,

No, I haven’t.  I live just outside of Cincinnati OH, in a city on the bluffs above the Ohio River.  The relevance is that my back yard is part of a deep gully, filled with trees (and deer!).  Cincinnati Bell is my ISP, and their lines, power lines,etc. run through those trees.  So it takes little—a strong wind or a lightning stroke—to disrupt power, phone, cable, etc.

If I seem to be wandering, the point is that I’ve assumed since I first saw this phenomenon that it was due to such issues, or too many people on the net (even though Cinti Bell has fiber in my area), or some such outside cause.

It is only in the past week or so that I realized that something else is going on, so I have not contacted my ISP.

Good advice, though!!

Chuck

On Jun 11, 2015, at 9:28 PM, Ryoichi Morita <[hidden email]<mailto:[hidden email]>> wrote:

On Jun 11, 2015, at 6:01 PM, Charles Hawkins <[hidden email]<mailto:[hidden email]>> wrote:

Huh, interesting.  I’ll explore that some more.  Right now the WiFi router I’m using is built into the internet router from my provider, so I don’t have a lot of control over it, other than resetting.  Have to look into that.


Have you called the tech support of your ISP? Sometimes, they can run some diagnostic tests and reset the unit over the phone. I’ve had to call my ISP a couple of times to “unstick” my unit.

Ryoichi Morita


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Re: Dropping Wi-Fi

Franconi Enrico
In reply to this post by Josh Centers
On 12 Jun 2015, at 01:14, Josh Centers <[hidden email]> wrote:

> The problem is that Apple replaced the reliable mDNSResponder DNS service with discoveryd in Yosemite, which has caused all sorts of network problems.
> The good news is that Apple is reverting back to mDNSResponder in 10.10.4 and El Capitan.
> For now, there isn’t a good solution, other than to install the betas that ditch discoveryd.

I have all sorts of problems caused by discoveryd. I launch the following applescript (saved as an app) whenever I see some symptom, and everything goes back to normal. Maybe this can help you as well.
cheers
—e.

do shell script "launchctl unload /System/Library/LaunchDaemons/com.apple.discoveryd.plist;launchctl load /System/Library/LaunchDaemons/com.apple.discoveryd.plist" with administrator privileges



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Re: Dropping Wi-Fi

@lbutlr
In reply to this post by Charles Hawkins
> On Jun 11, 2015, at 15:10, Charles Hawkins <[hidden email]> wrote:
> if I turn WiFi off and then back on again (on the Mac), it reconnects and everything is AOK.


I haven't seen this specifically, but I've had some odd wifi issues with all my machines recently.

I finally created a launchd task to reboot discoveryd everyday, and things are better.

Open up activity monitor and check the memory use of discoveryd. If it's more than a couple hundred MB, and especially if it's multiple GBs, quit it. It will relaunch.

--
This is my signature. There are many like it, but this one is mine.




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Re: Dropping Wi-Fi

Sam Silverman
My mid 2011 Mac Mini running Yosemite 10.10.3 consistently drops Wi-Fi. It’s not a problem for me as I have a wired Internet connection and only use Wi-Fi to for some links to my iPhone, but it happens several times a day.

Sam

> On Jun 12, 2015, at 10:39 AM, LuKreme <[hidden email]> wrote:
>
>> On Jun 11, 2015, at 15:10, Charles Hawkins <[hidden email]> wrote:
>> if I turn WiFi off and then back on again (on the Mac), it reconnects and everything is AOK.
>
>
> I haven't seen this specifically, but I've had some odd wifi issues with all my machines recently.
>
> I finally created a launchd task to reboot discoveryd everyday, and things are better.
>
> Open up activity monitor and check the memory use of discoveryd. If it's more than a couple hundred MB, and especially if it's multiple GBs, quit it. It will relaunch.
>
> --
> This is my signature. There are many like it, but this one is mine.
>
>
>
>
> ____________TidBITS Talk Participation Guidelines____________
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Re: Dropping Wi-Fi

Al Varnell
In reply to this post by Franconi Enrico
The OP is running Mavericks which does not use discovered.

-Al-

On Fri, Jun 12, 2015 at 03:16 AM, Enrico Franconi wrote:
>
> On 12 Jun 2015, at 01:14, Josh Centers <[hidden email]> wrote:

>> The problem is that Apple replaced the reliable mDNSResponder DNS service with discoveryd in Yosemite, which has caused all sorts of network problems.
>> The good news is that Apple is reverting back to mDNSResponder in 10.10.4 and El Capitan.
>> For now, there isn’t a good solution, other than to install the betas that ditch discovered.

> I have all sorts of problems caused by discoveryd. I launch the following applescript (saved as an app) whenever I see some symptom, and everything goes back to normal. Maybe this can help you as well.
> cheers
> —e.
>
> do shell script "launchctl unload /System/Library/LaunchDaemons/com.apple.discoveryd.plist;launchctl load /System/Library/LaunchDaemons/com.apple.discoveryd.plist" with administrator privileges



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Re: Dropping Wi-Fi

Charles Hawkins
Al,

Yup.  Someone mentioned using Activity Monitor to see what is going on, so for the heck of it I looked, and there is indeed no discovered (however it is spelled) running in Mavericks.

Several of the responses missed that point, I guess because there have been so many issues like this in Yosemite.

Chuck

On Jun 12, 2015, at 4:09 PM, Al Varnell <[hidden email]<mailto:[hidden email]>> wrote:

The OP is running Mavericks which does not use discovered.

-Al-

On Fri, Jun 12, 2015 at 03:16 AM, Enrico Franconi wrote:

On 12 Jun 2015, at 01:14, Josh Centers <[hidden email]<mailto:[hidden email]>> wrote:

The problem is that Apple replaced the reliable mDNSResponder DNS service with discoveryd in Yosemite, which has caused all sorts of network problems.
The good news is that Apple is reverting back to mDNSResponder in 10.10.4 and El Capitan.
For now, there isn’t a good solution, other than to install the betas that ditch discovered.

I have all sorts of problems caused by discoveryd. I launch the following applescript (saved as an app) whenever I see some symptom, and everything goes back to normal. Maybe this can help you as well.
cheers
—e.

do shell script "launchctl unload /System/Library/LaunchDaemons/com.apple.discoveryd.plist;launchctl load /System/Library/LaunchDaemons/com.apple.discoveryd.plist" with administrator privileges



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Charles E. Hawkins                                  Ask Questions
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Northern Kentucky University Question the Questions
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Phone:    859-572-0925
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Re: Dropping Wi-Fi

Paul Brians
In reply to this post by Charles Hawkins
My iPhone 6+ frequently drops my home WiFi signal, even when it’s a just a few feet from my Airport Extreme. It works fine most of the time, but sometimeds when I unlock the screen to use it the connection is gone. The network shows up as logged into in Settings, and the little WiFi symbol shows up at upper left of the screen, but the phone can’t actually do anything with data (voice still works). Although the AT&T LTE symbol is also displayed, it doesn’t default back to the cell tower signal either.

The fix I’ve found is fully powering down the phone. As soon as it boots back up it connects properly with my home WiFi and everything works—until the next time it disconnects.

Paul Brians
Bainbridge Island


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