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Lion WiFi Connection Problem

666933 Views 2,664 Replies Latest reply: Apr 18, 2014 8:57 PM by farrago RSS
  • Nogueira Level 1 Level 1 (0 points)
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    Jul 13, 2012 1:22 PM (in response to lrogersinlv)

    Just complimenting: Never Ending Story, directed and produced by Apple.

    By the way: There's no "good" part in this story, at least for us, consumers.

  • PCCustodian Level 1 Level 1 (0 points)
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    Jul 13, 2012 1:55 PM (in response to Nogueira)

    But it's Apple, "It just works" .....  blasphemors!  I resolved the issue for one of my clients the other day by doing the mtu setting change someone had previously mentioned.  This is one of many problems that go unresolved. 

  • tylerelgar Calculating status...
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    Jul 17, 2012 9:19 AM (in response to lrogersinlv)

    I have a mid 2011 imac im running lion 10.7.4 and when i boot my computer it does not automatically conect to my wifi network. it also takes a few tries to connect it sometimes because it says my conection timed out. i have tried eveything to fix it. it works fine on my MBP and iphone. Has anyone come up with a fix that works?

  • MichaelJ44 Calculating status...
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    Jul 17, 2012 10:58 AM (in response to lrogersinlv)

    This has been an never ending problem. I've talked to AppleCare several times and had NO success.  WiFi's here today, maybe off and then on, maybe not tomorrow, then good for 10 days, then nothing.  I've had "senior technical advisors" tell me to delete the system fold and re-install, had them link up a data test, been told the the iMac isn't really a WiFi spot and I should buy an external WiFi unit, been promissed a review and call back - none ever came.  Was Lion a rushed beta test program and a series of fixes coming? - none have worked yet.  Is Mountain Lion another beta platform?  I never had a problem with Snow Leopard - now nothing but problems.

  • Mocksy Level 1 Level 1 (0 points)
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    Jul 17, 2012 3:34 PM (in response to lrogersinlv)

    I have the same issue, I try to connect to a wifi network, it cant get an ipaddress via dhcp (all my other devices can np, IPad, windows pc's and printers) it wont ping even though parental controls, firewalls and everything else is turned off (permissions denied) and it wont find the printer I have set up (Windows 7 sailed through with no problems)

     

    I have utterly lost faith in macs, since the Lion upgrade, wireless is a total disaster. utter crap.

  • CT Level 6 Level 6 (14,985 points)
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    Jul 17, 2012 3:35 PM (in response to Mocksy)

    Can't confirm!

  • Georg Portenkirchner Level 1 Level 1 (0 points)
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    Jul 17, 2012 10:35 PM (in response to lrogersinlv)

    Since activating the menubar icon of the Messenger beta app on my MacBook I am having the same problem. Every time I open or restart my MacBook the WiFi connects, loses the connection, searches for a signal and then tells me that it has timed out. Sometimes after some time the WiFi connects suddenly, sometimes I have to deactivate and re-enable the WiFi several times until it stays connected.

    Hope the stable Messenger app won't have this problem or I will go back to Adium.

  • Mocksy Level 1 Level 1 (0 points)
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    Jul 18, 2012 6:19 AM (in response to CT)

    I don't wish to nitpick, but we have 154 pages with messages regarding poor wifi connectivity spanning a at least a year back so I dont think i'm on my own here....

  • humdinger70 Calculating status...
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    Jul 18, 2012 1:32 PM (in response to lrogersinlv)

    You might also want to check lines (either cable or phone). I was having issues with my phone line (I use DSL and download speeds were atrociously bad!) and my telco company got it fixed.

     

    I've noticed that I just have to turn off my Wifi, wait a few seconds, then turn it on again and I'm back - no reboot necessary.. It only affects the Mac. Another computer that I use at home (my work Win7 laptop that I bring home daily) seems to stay connected wirelessly with no problem - even if I do the Wifi off/on thing.

     

    Granted it's not a true answer (until Apple delivers a 10.7.5 to fix it), but it's better than it has been. There are days I do wish I hadn't upgraded from Snow Leopard (10.6.8).

  • pec1521 Calculating status...
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    Jul 18, 2012 6:04 PM (in response to lrogersinlv)

    My Son brought a 15" 2009 MBP home since he got a replacement from work.  Using this machine I immediately noticed the symptom of being disconnected the my internet connection several times repetiously. Other computers and wireless devices such as phones had no problems with the internet connection.  I knew the problem lay with this one machine. I opened the Network Preferences pane, clicked the Advanced button and went to the DNS tab.  I compared the DNS servers with my working iMac desktop.  The setting for the DNS servers were different.  I typed in the known working DNS server numbers and the machine's internet connection has been working ever since (three days). The entire time The new laptop could "see" my home network but not stay connected to the internet. I hope this helps someone.

     

    Along similar lines, about a year ago the three computers in my house (Mac and Windows) slowly had increasing difficulty with staying connected to the internet.  All the machines, not just one in the paragraph above.  After many calls to my internet provider, a serviceman call detected the DSL noise signal had been changed by the DSL provider in an effort to improve service in general.  I did not have complaints with the service until the company changed the noise settings.  By the time the serviceman left, the DSL signal was restored to the proper amount of noise for my line. The DSL service was again as good as it had been. Appearently DSL needs a certain amount of noise to work properly.  The amount needed is dependent on distance from the DSL switch, etc.  The DSL provider had "ruined" my internet connection in an effort to improve it.

  • gphonei Level 1 Level 1 (0 points)
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    Jul 18, 2012 8:40 PM (in response to pec1521)

    pec1521 wrote:

     

    My Son brought a 15" 2009 MBP home since he got a replacement from work.  Using this machine I immediately noticed the symptom of being disconnected the my internet connection several times repetiously. Other computers and wireless devices such as phones had no problems with the internet connection.  I knew the problem lay with this one machine. I opened the Network Preferences pane, clicked the Advanced button and went to the DNS tab.  I compared the DNS servers with my working iMac desktop.  The setting for the DNS servers were different.  I typed in the known working DNS server numbers and the machine's internet connection has been working ever since (three days). The entire time The new laptop could "see" my home network but not stay connected to the internet. I hope this helps someone.

    I've tried really hard to try and get people to work through the issues here, and it's been very hard to get people to keep coming back here with results, in a problem resolution, stepwise way.

     

    There is a documented (http://www.dcwg.org/) malware that changed DNS entries in network settings to cause your machine to go to the wrong web sites.  This was used to allow the perpetrators to errect fake websites that would collect usernames and passwords.

     

    It was a really big deal.  On June 9th there was a final change of DNS configuration, world wide, to stop "automatically fixing" these broken DNS entries to point to the correct places.  Some ISPs reportedly are still "fixing" the broken DNS effects, so that their customers maintain service.

     

    Anyone who has any "static" DNS configuration on any of their network interfaces may be infected by this particular malware, and should call their ISP and ask what DNS configuration is appropriate.

     

    Was it about June 9th that this problem started for you?

  • MadMacs0 Level 4 Level 4 (3,320 points)
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    Jul 18, 2012 10:01 PM (in response to pec1521)

    I saw your posting earlier and came to the site to say essentially what gphonei just said, but decided it might clutter up the discussion.

     

    The DNSChange Torjan isn't the only one active which interfers with internet access, but they tend to redirect the browser to alternative web sites (as DNSChanger back in the day) so even though we are still seeing some of them and seemingly a new one that affects Mac's running Cisco's AnyConnect, I think we can safely discount them as causing any of this.

     

    It's not altogether surprising to see a computer that is new to your network to have different DNS settings from yours. If, by any chance, you recorded the original ones before you changed them, that would help us with diagnosis. Any computer set to it's default networking configureation should get it's DNS addresses from the network router, which normally gets them from your ISP. It's only when you change those addresses on either the router, the device or both that things get messy. There are many reasons for making such changes. If all ISP's operated their own fast, well maintained, ad free DNS servers in your local area, they would almost always be your best choice.  But often, such is not the case. Namebench can often help you decide, but be careful with that as running two tests 20 minutes apart can give you completely different results based on all kinds of variables associated with your network and the Internet.

     

    OpenDNS and Google Public DNS are probably the two most well known alternative services, but some of their "features" aren't always appreciated.

  • William Kucharski Level 6 Level 6 (14,400 points)
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    Jul 19, 2012 6:09 AM (in response to MadMacs0)

    Another possible issue is that you may have multiple DNS servers active on your network.

     

    This often happens when a cable or DSL modem and Wi-Fi router each have a DNS server running, but only one will provide a routable address.

  • gillesMA Calculating status...
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    Jul 22, 2012 5:12 AM (in response to lrogersinlv)

    Hi there,

     

    Same problem than "tylerelgar". I have a brand new (2011) iMac 21.5" with Lion 10.7.4, it has trouble connecting to my Wi-Fi router when i turn it on. I have to manually select my network. Once it is connected it seems very stable.

     

    I did a re-installation erasing all previous files...it worked for a few hours, then back again...If someone has a solution that would be great!

     

    I have an older eMac G4 running without problem on the same Wi-Fi network...

  • David Cher Level 1 Level 1 (0 points)
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    Jul 22, 2012 5:27 AM (in response to lrogersinlv)

    Mountain Lion on the verge of launching .....

     

    i called Apple to send the files over but no reply from them for months . i have given up and time to move on ...

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