Skip navigation

Wifi Constantly Dropping in Lion

523611 Views 2,266 Replies Latest reply: Mar 28, 2014 2:35 AM by WSR RSS Branched to a new discussion.
  • jhendrich Calculating status...
    Currently Being Moderated
    Aug 29, 2012 7:48 AM (in response to gphonei)

    I feel about the same way.  Totally incomprehensible to me.  If the issue had been on IPad, I suppose a fix would have come out.  For my part, my snow leopard macbook pro, my IPad, my IPhone, my Apple Tv all work fine.  Just the iMac Lion fails.  Apple's support walked me through an inspect of my wifi settings particularly vis-a-vis channels, and  I'm running on low traffic channels, but it doesn't help.  I keep a ping process (to my router) going in the background and that is my workaround -- thank goodness it works or this imac would be near unusable.  I freely talk about the wifi failure to anyone I talk to about apple products these days, especially the fact that after more than a year there still hasn't been a fix. 

     

    If it hadn't been for this issue I would probably be 100% certain my next computer/device would be apple.  i wouldn't have even considered other makers.  Now, I know it would be utterly irresponsible not to give a hard look at other makers. 

  • gphonei Level 1 Level 1 (0 points)
    Currently Being Moderated
    Aug 29, 2012 8:23 AM (in response to Selinger)

    Selinger wrote:

     

    My airport bars will go grey and stay grey...however now I just disable my wifi entirely and use my USB device...

    Okay, here's something that everyone having this problem can try.  This is more easily done then the other things mentioned here so far.

     

    Open up a finder window, and navigate to /System/Library/CoreServices.  In this folder, there is an app called "Wi-Fi Diagnostics.app".  Double click on that, and in the initial window, click "Turn on Debug Logs", and click Continue.  In the next pane, open on the "Basic Logs" entry by clicking on the > icon on the left of it, and then click on "Wi-Fi Logging" and "DHCP".  At the bottom of that pane, select "Notify me when the WiFi interface", and select "Disconnects from the network".

     

    Turn you airport back on, with your USB device unplugged.  When it disconnects, a dropdown will appear with "Stop Logging" and "Continue Logging" buttons.  Select "Stop Logging".

     

    A .tgz file will be placed on  your desktop which has lots of logging information in it.  It is an archive of multiple files, double click on it, and a folder will be created.  You can look in that folder at the files to see what they reveal about the moment the disconnect occured.

     

    I'd be tempted to also just take my machine to the Apple store and say, here is the failing logs, tell me why it failed.

  • aiki Calculating status...
    Currently Being Moderated
    Sep 2, 2012 2:34 AM (in response to jhendrich)

    Since changing to Mountain Lion my wifi has become stable again. No more random grey outs of the signal strengh bar. I just hope some future update doesn't trigger the problem again.

    Jon

  • aiki Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 2, 2012 2:39 AM (in response to aiki)

    Also as this topic has a wide viewer group can any one add to this topic of annoyance with a new feature, be it a bug or deliberate.

    Finder window snaps to top after copy

    https://discussions.apple.com/message/19450058#19450058

     

    Any help appreciated

  • Big Red Dog Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 2, 2012 8:32 AM (in response to gphonei)

    OK, I think I’m fixed.

    I’ve been following this Forum for a year now ever since upgrading to Lion and began experiencing daily “loss of connection to the Internet”. Both my MacBook and MacPro were affected. They could still access the Router’s Admin Page, but not any site on the Web through the MODEM.

    As a reminder, the MacBook is connected via WiFi, but my MacPro is HARDWIRED to the LAN via a RJ-45 connectorized cable to the Cisco Router. The hardwire made no difference … the MacPro still loss connection. While the MacBook link could be re-established by turning the WiFi off and on again, the MacPro required a Restart.

    Four days ago I noticed my iPhone failing to sync with the iCloud server. It was timing out. When I checked into the Internet connectivity with my ISP, I found longs periods of time when the link was down. Rather than having continuous 10Gb/s service, the average rate was down to 1-2 Gb/s, with gaps in connectivity lasting as long as 12 seconds.

    I had Brighthouse (Roadrunner) check it out and they found my MODEM defective. It was replaced.

    For the past 4 days, I have had NO loss of connection to the Internet. The only cause I can think of is the Lion software, that monitors external connection integrity, is shutting down the link(s) when those applications which periodically communicate to the Web (like Mail, Outlook, Software updates, etc.) fail to re-establish connection within a minimum period of time. Apparently, 12 seconds exceeds this minimum.

    This fixed the issue for me, but based on the symptoms others have described, changing a MODEM may not fix everyone’s problems.

  • gphonei Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 2, 2012 3:02 PM (in response to Big Red Dog)

    Big Red Dog wrote:

     

    OK, I think I’m fixed.

     

    This fixed the issue for me, but based on the symptoms others have described, changing a MODEM may not fix everyone’s problems.

    This is precisely the deal that a lot of posts here have reinforced.  There might be a problem which Apple needs to fix, but not everyone is really experiencing "The Apple Problem".  Only though careful diagnoses of the problem can you find the root cause to get it fixed.

  • jayna wallace Level 1 Level 1 (15 points)
    Currently Being Moderated
    Sep 4, 2012 11:22 AM (in response to lhale)

    My Wi-Fi ceased to work on my 2010 MacBook Pro after upgrading last May from Snow Leopard to Lion (10.7.3).

     

    The Wi-Fi appeared in the menu bar as being connected (full strength), but when attempting to visit sites like www.google.com on Firefox, I received the error "Server not found."

     

    I was able to fix the issue by altering the text in the Authorization file based on the notes here: http://www.24100.net/?s=how+to+fix+the+mac+os+x+lion

     

    This morning (09/04/2012) I updated to 10.7.4, and I am experiencing the exact same issue. According to the Network Preferences panel, Wi-Fi is connected (and the bubble is green).

     

     

    I've tried typing "ping -c 4 8.8.8.8" into Terminal and hit return. I saw the following:

     

    PING 8.8.8.8 (8.8.8.8): 56 data bytes

    64 bytes from 8.8.8.8: icmp_seq=0 ttl=48 time=29.165 ms

    64 bytes from 8.8.8.8: icmp_seq=1 ttl=48 time=29.548 ms

    64 bytes from 8.8.8.8: icmp_seq=2 ttl=48 time=29.976 ms

    64 bytes from 8.8.8.8: icmp_seq=3 ttl=48 time=33.200 ms

     

    According to an earlier post on this forum: "Then your wireless connection IS WORKING, but "DNS" or some other packets are being dropped by your ISP."

     

    I then attempted typing "dig @8.8.8.8 www.apple.com" and hitting return.

     

    ; <<>> DiG 9.7.3-P3 <<>> @8.8.8.8 www.apple.com

    ; (1 server found)

    ;; global options: +cmd

    ;; connection timed out; no servers could be reached

     

    I'm also using a desktop Mac (running 10.6.8) and another (newer/2012) MacBook Pro (running 10.7.4), both of which have no issues connecting to the internet on the same ISP/same router.

     

    The instructions from

    http://www.24100.net/?s=how+to+fix+the+mac+os+x+lion won't work this time around - the code from the 10.7.4 authorization file no longer syncs up to the code shown in the 24100.net post (it was written for 10.7.3).

     

    Any assistance would be appreciated.

  • gphonei Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 4, 2012 9:40 PM (in response to jayna wallace)

    jayna wallace wrote:

     

    I've tried typing "ping -c 4 8.8.8.8" into Terminal and hit return. I saw the following:

     

    PING 8.8.8.8 (8.8.8.8): 56 data bytes

    64 bytes from 8.8.8.8: icmp_seq=0 ttl=48 time=29.165 ms

    64 bytes from 8.8.8.8: icmp_seq=1 ttl=48 time=29.548 ms

    64 bytes from 8.8.8.8: icmp_seq=2 ttl=48 time=29.976 ms

    64 bytes from 8.8.8.8: icmp_seq=3 ttl=48 time=33.200 ms

     

    According to an earlier post on this forum: "Then your wireless connection IS WORKING, but "DNS" or some other packets are being dropped by your ISP."

     

    I then attempted typing "dig @8.8.8.8 www.apple.com" and hitting return.

     

    ; <<>> DiG 9.7.3-P3 <<>> @8.8.8.8 www.apple.com

    ; (1 server found)

    ;; global options: +cmd

    ;; connection timed out; no servers could be reached

    So the ping demonstrates that packets of network traffic (ICMP Echo packets) can travel from your computer to the network, and be returned.   So the "network" part is working.

     

    The fact that you can not get a DNS lookup of www.apple.com from the google DNS servers, says that there is something not working with TCP routing.  TCP is a higher level protocol and needs more functions of the network to work. 

     

    Let's try some additional things.   What does

     

    traceroute -w 1 -n 8.8.8.8

     

    printout?  This will show the path, on the internet, from your machine, to the 8.8.8.8 machine (googles public server for DNS and other services).

     

    Also, please open SystemPreferences and double click on "Network" preferences, and then select your Wi-Fi entry from the list on the left.  Next, click "Advanced" in the bottom right.  At the top, click on the DNS "tab". What entries are in the "DNS Servers" list?

     

    For each entry in that DNS list, do you get any different results from doing

     

    dig @DNSSERVER www.apple.com

     

    where DNSSERVER is one of those addresses in the DNS list?

  • jayna wallace Level 1 Level 1 (15 points)
    Currently Being Moderated
    Sep 5, 2012 12:30 PM (in response to gphonei)

    Thanks so much for replying!

     

    Wanted to give an update - after a few failed attempts at creating a new location and manually entering in some numbers (and deleting a few .plist files) - I ended up booting in Recovery Mode (Command-R) and reinstalling Lion over the existing system (without deleting all my files). Article here: http://www.macworld.com/article/1167870/hands_on_with_mountain_lions_os_x_recove ry_and_internet_recovery.html

     

    I'm back up and running with no issue!*

     

    *Until the next time I decide to run Software Update. Which I'm hesitant to ever do again.

     

    Thanks again for the support!

  • AlterDuo Calculating status...
    Currently Being Moderated
    Sep 5, 2012 6:37 PM (in response to lhale)

    As a freelance Network Administrator and IT Consultant i can safely confirm that there are some serious issues with 10.8 (10.8.1) when it comes to WiFi connectivity. I support around hundred Apple Computers from simple 13 inch Macbooks to Company Server environments and since the release of ML i had a HUGE increase in phone calls with complaints about dropping WiFi...ALL of them running 10.8 or 10.8.1.

     

    So far the issues seems to arise only on certain routers and network configurations. No issues over ethernet as it already has been stated a million times. My clients are mostly in the creative departement and tend to travel a lot using a multitude of WiFi networks so i got a good picture on the issue. Some have no problems at all, some experience drops on certain networks and some get drops contantly no matter where they are.

     

    While i as many others here search for a stable solution to this mess i also have to state that it is not the users responsibility to change Routers/Modems/Access Points/ISPs which have worked flawlessly for months or years with 10.6/10.7 or Windows/Linux Computers. Today i had a raging movie producer on the phone who was rightfully ****** that his new 2000 Dollar Macbook Air performs worse in terms of connectivity than his sons 300 dollar china plastic netbook. And while i am a huge supporter of Apple i can do nothing else but to agree with him. This is pathetic and seriously disrupts the workflow.

     

    Don`t get me wrong Apple i earn my money with supporting Apple Users but this is just bad performance and already causes bad publicity as i can tell. I have no choice at the moment but to recommend NOT to buy any Apple Product running ML or upgrading to it because of this simple issue. Today i spent almost 10 hours with four different 10.8.1 Macbooks ranging from 2009 models to the actual lineup with no real progress on the problem. And i played out all my cards up to the point where i pretty much wrecked the WiFi config on my own Macbook in attempts to experiment my way to a decent workaround.

     

    About one hour ago a good friend of mine dropped by with his new and shiny Retina MacbookPro and BAM the issue showed up pretty much after doing the initial set up. His face expression was somewhere between the urge to blow his new purchase up and sitting in the corner crying for the rest of the week after i explained the current situation to him.

     

    People EXPECT to have a reliable WiFi connection especially after buying a premium product. Get this fixed ASAP!! Running constant pings in the background, playing around with .plists, messing around with well established Network/DNS setups and brutalizing the systems down to 10.6 Kext is NOT a solution for the daily user! The daily user feels pretty much betrayed at the moment...

  • CT Level 6 Level 6 (15,015 points)
    Currently Being Moderated
    Sep 5, 2012 6:54 PM (in response to AlterDuo)
  • gphonei Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 5, 2012 7:09 PM (in response to AlterDuo)

    AlterDuo wrote:

     

    As a freelance Network Administrator and IT Consultant i can safely confirm that there are some serious issues with 10.8 (10.8.1) when it comes to WiFi connectivity. I support around hundred Apple Computers from simple 13 inch Macbooks to Company Server environments and since the release of ML i had a HUGE increase in phone calls with complaints about dropping WiFi...ALL of them running 10.8 or 10.8.1.

     

    So far the issues seems to arise only on certain routers and network configurations. No issues over ethernet as it already has been stated a million times. My clients are mostly in the creative departement and tend to travel a lot using a multitude of WiFi networks so i got a good picture on the issue. Some have no problems at all, some experience drops on certain networks and some get drops contantly no matter where they are.

    Can you share what you've found about the actual network state?  Is the WiFi signal strength always grey, sometimes grey, always black when they experience a non-functioning WiFi?  I keep asking people for details, because this really is like an illness.  The visible details all help with the diagnoses.

     

    Everyone of your "customers" with new hardware should be calling AppleCare, or you should be for them, and hitting them up for an answer, or some confirmation that they have a fix coming ASAP.

     

    What security mode is involved, what manufacture routers, what is the area of the world etc?

     

    Information from a large diverse set of circumstances can be a lot of information, but can be very revealing about what is really going on.

  • AlterDuo Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 6, 2012 1:25 AM (in response to gphonei)

    gphonei wrote:

     

    AlterDuo wrote:

     

    As a freelance Network Administrator and IT Consultant i can safely confirm that there are some serious issues with 10.8 (10.8.1) when it comes to WiFi connectivity. I support around hundred Apple Computers from simple 13 inch Macbooks to Company Server environments and since the release of ML i had a HUGE increase in phone calls with complaints about dropping WiFi...ALL of them running 10.8 or 10.8.1.

     

    So far the issues seems to arise only on certain routers and network configurations. No issues over ethernet as it already has been stated a million times. My clients are mostly in the creative departement and tend to travel a lot using a multitude of WiFi networks so i got a good picture on the issue. Some have no problems at all, some experience drops on certain networks and some get drops contantly no matter where they are.

    Can you share what you've found about the actual network state?  Is the WiFi signal strength always grey, sometimes grey, always black when they experience a non-functioning WiFi?  I keep asking people for details, because this really is like an illness.  The visible details all help with the diagnoses.

     

    Everyone of your "customers" with new hardware should be calling AppleCare, or you should be for them, and hitting them up for an answer, or some confirmation that they have a fix coming ASAP.

     

    What security mode is involved, what manufacture routers, what is the area of the world etc?

     

    Information from a large diverse set of circumstances can be a lot of information, but can be very revealing about what is really going on.

     

    So far i am still in the process of collecting data, i should get detailed feedback from three clients today on their network experience at home and at work. Symptoms are the same across the board. WiFi signal strength is always black with websites suddenly no longer loading. Pretty much what you experience when DNS problems start to show up yet the DNS Servers are working fine. Disable/Enable brings back connectivity for some time period.

     

    My "customers" don`t have time nor motivation in hanging on the phone for hours to get help from AppleCare thats what they have me for. And since this is little Austria where we don`t even have an official Apple Store you can imagine how hard it is to get official support even if you call Apple Germany. The only big licensed retailer providing store support in this country is a high-horse hipster store where they deny all knowledge of this issue blaming it on the user themselves which of course is not helping at all. And YES of course i keep forwarding the fact that a fix is coming ASAP what else am i supposed to say? Suck it up?

     

    I will be in a company later this day with Cisco Access Points and and 10.6.8 Xserve providing DNS/DHCP where everybody on 10.8.1 suffers from drops. Will sniff around there for a while to see if something interesting shows up or provides interesting data.

     

    What is really interesting is that i am on a network at the moment which shows no drops for the user owning it. The guys details are:

     

    2009 A1260 Macbook Pro 10.8.1 without any adjustments to the system. He just upgraded from 10.7.4 and never had WiFi issues so far.

    Standard 20/1mbit XDSL from local provider with a dynamic public IP and DNS provided by the ISP.

    The modem/router is a standard Fritzbox Fon Wlan 7170 SL providing DHCP.

    WiFi Channel is on Auto in 802.11g+b mode, 802.11g++ mode is activated in addition.

    Security is adjusted to WPA2(CCMP).

     

    I will try to apply similar setting to the Cisco Access Points later today to see if it brings any changes, even my own laptop which drops constantly the last days works without issues on the Fritzbox WiFi so maybe i am up to something here. Will report back after i experimented with this hint.

    Xserve (Early 2009), Mac OS X (10.6.8)
  • biggerboy Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 7, 2012 2:07 PM (in response to AlterDuo)

    Anyone having problems using Cisco equipment? Apparently over there they've found the solution:

     

    https://supportforums.cisco.com/thread/2114266

    https://supportforums.cisco.com/docs/DOC-26228

  • gphonei Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 7, 2012 3:42 PM (in response to biggerboy)

    biggerboy wrote:

     

    Anyone having problems using Cisco equipment? Apparently over there they've found the solution:

     

    https://supportforums.cisco.com/thread/2114266

    https://supportforums.cisco.com/docs/DOC-26228

    This is an interesting find.  This might be the answer for a lot of large campus environments/users.  I wonder still, if there are also people with multiple routers, at home, on the same band with the same SSID but with different security modes?

Actions

More Like This

  • Retrieving data ...

Bookmarked By (82)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.