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Wifi Constantly Dropping in Lion

524453 Views 2,266 Replies Latest reply: Mar 28, 2014 2:35 AM by WSR RSS Branched to a new discussion.
  • rainerfromdresden Calculating status...
    Currently Being Moderated
    Aug 17, 2011 2:55 AM (in response to lhale)

    I have the same problem after 10.7.1. - no change!

    Please Apple, make it better. It is not  a good way to work with a internet connection which drops always after 2 minutes.


    I have a iMac from End of 2009. (3,06 Ghz COre 2 Duo)

    I uses a Wireless LAN Router Speedport W320V.

    Changing the channel or from a/b/g to a/n and another frequence don't change anything.

    I use a WPA2 Wireless LAN.

  • haggibbor Level 1 Level 1 (5 points)
    Currently Being Moderated
    Aug 17, 2011 3:45 AM (in response to rainerfromdresden)

    A lot of people have commented on how small the download for 10.7.1 is (<18 MB) when using Software Update. On the Support Downloads page, it is listed as almost 80 MB. Could that be related? Is the shorter download skipping something important? I don't know.


    Re: Speculation on this board about whether Lion is causing routers to fail. That seems very odd, but I don't have the engineering knowledge to say it can or can't happen. In public Wifi areas, they have all kinds of devices and OSs using the Wifi. Does one of them cause the router to stop working? Never heard of that. Malicious hackers would love it as a way of messing with people and businesses. But if it happens, whose fault is it? OS 10.7 or the router?


    In my expericence, 10.7 on my iMac dropped wifi many times, but the router (Airport Extreme) was never affected; other computers (Mac 10.6.8 and Windows 7) remained connected.


    So far, no problem with 10.7.1, but that is obviously not true for all of you.

  • LandSharkLaw Level 1 Level 1 (0 points)
    Currently Being Moderated
    Aug 17, 2011 3:55 AM (in response to Alf Megson)

    I posted earlier regarding connectivity issues.  Zero connection issues in SL, upgraded to Lion on day 1, within half an hour (maybe sooner) after  the install was completed I immediately began getting random loss of wi-fi (bars grayed out with no connection as well as bars remaining dark and everything indicating that I was connected, but no connection being registered by Safari), no pattern or predictability, problem persisted and worsened.  And when I was able to connect on an intermittent basis, my speeds were a fraction of what I was getting pre-Lion (about 50% to 60% slower than my pre-Lion download speeds and about 30% slower on my upload speeds).  I also noticed that -- again only after my Lion upgrade and never before -- my iPad2 began showing intermittent but infrequent connection issues.  Far less than my April 2011 iMac 27 inch but nonetheless on an irregular regular basis with some drop of speed as well (but, again, not as dramatic a drop as with the iMac.  Curiously, my laptop PC and my kids' Androids on the same wireless home network (HTC &amp; SAMSUNG) experienced absolutely no connectivity issues, and their speeds remained throughout consistent with those they ran pre my Lion update and consistent with those upload and download speeds I enjoyed on my iMac pre-Lion.


    SO . . . today I'm thrilled when I hear about .1 and rush to update.  For the most part connectivity seems to have improved.  Apparently no drops and the computer has not told me that I am connected while Safari, YouTube, Spotify, etc act as if I'm not connected.  I don't know about the iPad yet because were still with the period of irregular regularity so that I don't know if I'm between episodes of connection problems or if the iPad has straightened itself out.


    HOWEVER -- and this is big BUT:  I am now getting a lot of Safari error pages with the grayed out writing and compass saying that Safari cannot find the server.  I have to refresh repeatedly or go back and try again, and usually after the fourth or fifth time, it hits.  It feels like Vegas, but I do better in Vegas.  To be clear, I never saw one of these pages before . . . NEVER.  Not pre-lion, not post-Lion with the connection issues, not ever.  ****, I don't even know what server it's trying to find because, believe me, if I knew I'd go find it myself and put an end to it.  Understand, this isn't humor for humor's sake.  I don't want to know about lost servers or 4 8's on some DNS or Terminal pinging that you have to hide but not close.  I also don't want to hear from WK telling me how it's my router's fault or how Apple couldn't have screwed up or how other things must have bugs in them when they never had them before and only manifested these peculiar symptoms, coincidentally, only after Lion.  And I don't want to hear from him hiding behind jargon and explanations when any idiot can clearly grasp the fact that it worked before, it does not work now, PC and Androids on the same system continue to work fine and the only difference, only difference, only difference between before and now is that the machine that doesn't work anymore now got some bad dope call Lion.  Well, not any idiot . . . WK still seems to be caught up the stream in denial.


    Sorry for the length, but it had to be said.  And being a firm believer that if you say something that's worth saying, it kind of undercuts your position if you don't have the brass to put your name to it, I sincerely remain a hopeful Apple enthusiast,



  • FishComputer Calculating status...
    Currently Being Moderated
    Aug 17, 2011 4:45 AM (in response to lhale)

    disconnect from wifi


    connect to ethernet


    open Java Preferences in the Utiliies Folder


    In Java Pref run Software update


    Then run the software update from the  menu


    now restart the computer


    does it work?

  • Darryl Mylrea Calculating status...
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    Aug 17, 2011 5:22 AM (in response to LandSharkLaw)

    Well said, Abraham.  Thanks.

  • Shaunmull Calculating status...
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    Aug 17, 2011 5:37 AM (in response to Darryl Mylrea)

    I've updated to .1 and since doing so havent experienced any drop or freeze,YET. 


    Something I had started to do was to quit both iTunes and Safari before placing the machine into sleep.  This didnt solve or prevent the drops of wifi or freezing of Safari but it did reduce the amount of times it happened.

  • Fred-Norfolk, VA Level 1 Level 1 (0 points)
    Currently Being Moderated
    Aug 17, 2011 6:06 AM (in response to Simsonic)

    Yes, Simsonic, I did call Apple.  As I stated in an earlier post, the rep told me that if the solution he offered didn't work then there was nothing else he could suggest.  Well, what he suggested didn't work.  I tried everyting the rep suggested and everything that was suggested on this forum and one other.  The only thing that held a connection even temporarily was pinging a server. Toward the end even that was not working.  My WiFi and my Ethernet experienced identical conditions.  What finally worked was installing 10.7.1.  And, as you can see from the notes posted here, installing 10.7.1 hasn't worked for some people.

  • Elementone85 Calculating status...
    Currently Being Moderated
    Aug 17, 2011 7:57 AM (in response to Fred-Norfolk, VA)

    Ok, I wrote a cuple of pages back, that a clean install of Lion would have solved my did...for like 7hrs the mashine was running perfect. After that it was worse than before....

    After Logic then crashes all the time and some Plugins made problems, I brought the Snow Leopard back in Business....I also wrote the Appstore Support an email about a possible refund....and surprise I got my Money back. I guess they are fully aware of all the problems and bugs... So now I am using my iMac with SL and maybe I try Lion again in a year or so.


    So, the only way all works perfect is to be patient and wait for a later built of Lion.


    All this just cost me about 30hrs of life....backing up and reinstalling for a few times....

  • LenJC57 Calculating status...
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    Aug 17, 2011 8:08 AM (in response to lhale)

    I believe it has something to do with the Network software part of Lion; I was watching the Network system preferences window, and before my eyes, the DHCP lease failed to renew. When that happened, the IP address falls off the proverbial cliff, and then, poof! No Internet. Airport network is up and running as pretty as you please. A short time later, the DHCP lease renews, IP address is restored, and I'm free to surf once more... until it happens again 20 minutes later. This is where the fault lies, I think. Any thoughts? Any fixes?

  • coolm6n Calculating status...
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    Aug 17, 2011 8:56 AM (in response to lhale)

    has being happily using my imac 27" for 2 months until i upgraded to lion. ever since it has being nightmare. wifi has being dropping even when i was actively surfing the internet. (usually no less than 15mins, my wifi will dropped off)


    yesterday night was the worst, the wifi crashed my imac 27" on lion (has reported to apple)

    Below is a snippet of the error log:


    Tue Aug 16 22:53:43 2011

    Panic(CPU 1): Unresponsive processor (this CPU did not acknowledge interrupts) TLB state:0

    RAX: 0x00000000ffffffff, RBX: 0x0000000000002710, RCX: 0x0000000000007000, RDX: 0xffffff807a625078

    RSP: 0xffffff8080753c8c, RBP: 0xffffff8080753c90, RSI: 0x0000000000007000, RDI: 0xffffff806be5d004

    R8:  0xffffff807a595408, R9:  0x0000000000000000, R10: 0x8000000000100000, R11: 0x0000000000000000

    R12: 0x0000000000007000, R13: 0xffffff806be5d004, R14: 0x0000000000000003, R15: 0x0000000000000000

    RFL: 0x0000000000000292, RIP: 0xffffff7f80ef5a1f, CS:  0x0000000000000008, SS:  0x0000000000000010

    Backtrace (CPU 1), Frame : Return Address

    0xffffff807a5bef50 : 0xffffff80002c783c

    0xffffff807a5bef80 : 0xffffff80002c27b0

    0xffffff807a5befd0 : 0xffffff80002d7bf2

    0xffffff8080753c90 : 0xffffff7f80ed3bae

    0xffffff8080753cf0 : 0xffffff7f80f1e006

    0xffffff8080753d10 : 0xffffff7f80f1ed3c

    0xffffff8080753d30 : 0xffffff7f80f1f127

    0xffffff8080753da0 : 0xffffff7f80ecda3b

    0xffffff8080753e20 : 0xffffff7f80ec6f5c

    0xffffff8080753e60 : 0xffffff7f80ef74f3

    0xffffff8080753e80 : 0xffffff7f80ec3015

    0xffffff8080753ec0 : 0xffffff7f80e83936

    0xffffff8080753ef0 : 0xffffff8000639536

    0xffffff8080753f30 : 0xffffff80006382b0

    0xffffff8080753f70 : 0xffffff8000638154

    0xffffff8080753fb0 : 0xffffff8000820057


      Kernel Extensions in backtrace:

   [01000ACB-C064-3F42-820F-BDE2008267 25]@0xffffff7f80e64000->0xffffff7f80fa3fff

                dependency:[95ABB490-3AB5-3D5E-9C21-67089A9AE6A1]@0xffff ff7f80821000

                dependency:[78A58272-2170-3068-9C63-88301C99C406]@0xf fffff7f80e2c000

                dependency:[59A00F6B-3710-3E07-9921-70C45782FF8C]@0 xffffff7f8090e000

          Kernel Extensions in backtrace:

   [01000ACB-C064-3F42-820F-BDE2008267 25]@0xffffff7f80e64000->0xffffff7f80fa3fff

                dependency:[95ABB490-3AB5-3D5E-9C21-67089A9AE6A1]@0xffff ff7f80821000

                dependency:[78A58272-2170-3068-9C63-88301C99C406]@0xf fffff7f80e2c000

                dependency:[59A00F6B-3710-3E07-9921-70C45782FF8C]@0 xffffff7f8090e000



    This morning, i did an upgrade to 10.7.1. intially i thought the wifi problem has being fixed. but after 30mins while i am still actively surfing the internet, the internet connection goes off....

  • Fred-Norfolk, VA Level 1 Level 1 (0 points)
    Currently Being Moderated
    Aug 17, 2011 9:13 AM (in response to coolm6n)

    And until a few minutes ago I thought the .1 upgrade had fixed my problem.  Then I realized that Mail wasn't sending a message.  I went to my browser, and it was the same old story:  the computer had lost its connection to the Internet.  I had to go through the diagnostics.  Couldn't make my Ehternet connection work, but I finally go a connection back via WiFi.


    Apple, this is NOT acceptable.  This is a load of crap, in fact.  Fix it.  And don't wait a month to do it.

  • M. Schnaars Calculating status...
    Currently Being Moderated
    Aug 17, 2011 9:15 AM (in response to lhale)

    Hi guys,

    I am from Germany and was looking for help in this forum.

    Same problems over here, by the way.

    I called Apple, they called me back and wrote e-mails etc., but nothing helps.

    I keep losing my WiFi connection several times a day.

    Nobody seems to know what it is.

    Fact is that I never ever had any problems before I upgraded to Lion.

    What is this?

    Why can Apple not fix this?

    Don't they read posts like this?

    Don't they have guys who know how to write stable programs?

    I really don't get it.

  • StephenCox Calculating status...
    Currently Being Moderated
    Aug 17, 2011 9:22 AM (in response to M. Schnaars)

    Certainly Apple is aware of this problem--it's been widely discussed as one of the most irritating problems with Lion.  I agree that it's really hard to imagine they adequately tested Lion on any platform and didn't come across this problem.  I had the misfortune of having a computer die a week before the new OS came out, so I have a brand new Mac that shipped with Lion and is suffering just like all the upgraded computers.

  • M. Schnaars Level 1 Level 1 (0 points)
    Currently Being Moderated
    Aug 17, 2011 9:34 AM (in response to StephenCox)

    So I assume you have a MacBook Air then, don't you?

    If it was shipped with Lion installed, it can only be the MacBook Air, as far as I know, since all other computer still have Snow Leopard as their OS, right?

    This is strange, though.

    I got my wife a brand-new MacBook Air and it never loses its WiFi connection, only my upgraded iMac does.

  • StephenCox Level 1 Level 1 (0 points)
    Currently Being Moderated
    Aug 17, 2011 9:44 AM (in response to M. Schnaars)

    I have a Macbook Air, but every current Mac ships with Lion installed.  The update just showed us that there are two different versions of Lion--one for the MBA and Mini, one for everything else.

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