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Wifi Constantly Dropping in Lion

522216 Views 2,266 Replies Latest reply: Mar 28, 2014 2:35 AM by WSR RSS Branched to a new discussion.
  • seandlh Calculating status...
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    Apr 12, 2012 8:54 AM (in response to lhale)

    I had a WRT54GL running DD-WRT and was continually having this problem on all channels with 802.11g. I was able to work-around the problem with a wireless bridge connected to ethernet port, but it wasn't pretty.  So, I ordered a Linksys E3000 router and haven't had any drops since.  I'm now running 802.11n on the 5GHz band (default channel).  I'm getting very good speed on my entire network since now that my iPhones and laptops can stay on the 2.4 GHz band.

  • WSR Level 1 Level 1 (30 points)
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    Apr 12, 2012 4:32 PM (in response to goatcabin)

    goatcabin wrote:

     

    "Did you expect anything different?"

     

    I didn't expect anything, actually. However, the current situation is incomparably better than the prior one.

    Cheers,

    Alan Shank

    Indeed, but just for the record then, you can *always* expect the connection to drop when it's asleep.

  • denismc Calculating status...
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    Apr 13, 2012 2:06 AM (in response to lhale)

    I will just add my recent experience, I have had Wifi dropping  after 4 minutes of inactivity since i got my iMac a few weeks ago. All my other devices don't have a problem maintaining connection.

    I had tried most of fixes on here to no avail but then someone suggested reducing security on the router.

     

    So i removed the firewall on the iMac and my router (zxyel660hw) and removed the WPA security on my router and i was able to maintain a connection. I turned the firewalls back on and everything was still good but when i turned the WPA security back on the problems reappeared.

    So at least i have something to work on.

    There is an equally large thread on the forum with the iPad2 having similar wifi issues. A few people on there have mentioned WPA security as well.

  • Harpo Marx Level 1 Level 1 (10 points)
    Currently Being Moderated
    Apr 13, 2012 2:27 PM (in response to lhale)

    Follow these steps - it will fix the issue (After restarting or waking from sleep, my computer might not connect to the Internet) on the latest iMac with Lion 10.7.3:

     

    What we will do here is - first install the latest iMac Wi-Fi Update. Then remove our preferred network in network settings plus remove the stored network passwords from KeyChain Access Utility. Restart and rebuild our preferred network with password. Done. Please follow the instructions carefully.

     

     

    1) Download iMac Wi-Fi Update v1.0 here: Download

     

    This update resolves an issue that may cause an iMac to not automatically connect to a known Wi-Fi network after waking from sleep. February 24, 2012 - 25.81 MB

    http://support.apple.com/kb/DL1500

     

    2) (http://support.apple.com/kb/HT4628?viewlocale=en_US) - (slightly modified below)

     

    Symptom: After restarting or waking from sleep, my computer might not connect to the Internet

    • 1. Select the Wi-Fi tab and view your Preferred Networks list.
    1. Select each network and click the minus sign to remove those networks from your Preferred Networks list.


      => REMOVE ALL NETWORK - including your PREFERRED NETWORK (which is the very one you are having issues with)

    2. Click OK and close the Network preferences.

    2. Remove your stored network passwords using the Keychain Access Utility.

    1. Open Keychain Access from /Applications/Utilities. Your window will look like this:
    2. Remove your AirPort network passwords from the login keychain: Select the "login" keychain from the Keychain sidebar. Click the "Kind" column to order the list of keychain items by their type. Remove all entries of the kind: "AirPort network password".
    3. Remove your AirPort network passwords from the System keychain: Select the "System" keychain from the Keychain sidebar. Click the "Kind" column to order the list of keychain items by their type. Remove all entries of the kind: "AirPort network password".

      Note: The above steps will remove your Wi-Fi network passwords. If you do not know them, or if your network does not use passwords to restrict access, you should contact your network administrator.

    3. Restart your computer.

     

    4. Go to network settings / preferred networks and click the button to add your preferred network. Join your Wi-Fi network. You will need to enter your password for your network again if it requires one.

     

    Done.

     

    Click Sleep and wake it and it all will be fine!

    https://discussions.apple.com/message/18121501/edit

  • jhendrich Calculating status...
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    Apr 13, 2012 9:45 PM (in response to Harpo Marx)

    I follow these steps and get to the keychain and there's no airport network password stored there.


    In any case, I've had this iMac since about last september.  The remarkable thing is that in the time since I got it, the wife connectivity has only gotten worse. Connectivity averages just a couple minutes or so before I have to take action (renew DHCP, restart wifi etc).  I do that and it stays connected for another couple of minutes. Seems like rebooting makes it last longer, but eventually it gets wacked out.  I have four other apple devices IPhone, Ipad 2, macbook pro (snow leopard), and apple tv, and none of them have exhibited this issue.  It really makes the iMac almost unusable. 

  • technomystic Calculating status...
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    Apr 14, 2012 2:18 PM (in response to lhale)

    I have a recurring "Wi-Fi: Looking for networks" message in airport every one or 2 minutes. Ever since Lion 10.7.3 update.

    I can't even stream video much anymore because of it ( I have a 12 mb/sec Comcast connection).

     

    It happens on several different networks with several different routers (airport and not, both 2.4 and 5.0, both g and N)

     

    Older Macbook pro core 2 duo. Tried resetting SMC and clearing all previous networks.

     

    Very annoying. I wonder when Apple is going to respond, there are 112 pages of complaints?

  • Apostropher Royal Calculating status...
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    Apr 14, 2012 11:04 PM (in response to lhale)

    Just wanting to add my voice to the growing list of people affected by this crazy issue.

     

    In my house I have two iPhone 3Gs running iOS 4, two iPhone 4s running iOS 5, a MacBook (May 2006) running OS X Snow Leopard and an iMac (Late 2009) running OS X Lion. Only one of those devices has trouble connecting, and staying connected, to my BoB2 wireless modem/router.

     

    No prizes for guessing which.

     

    And of note, it had no problems before I upgraded its OS to Lion. Ran Apple's iMac Wi-Fi Update, and have tried all the solutions suggested here, but still no joy.

  • dimitrimacapple Level 1 Level 1 (0 points)
    Currently Being Moderated
    Apr 17, 2012 3:43 PM (in response to lhale)
    1. I have had dropping wifi issues with the imac 27" i7 i picked up first week of 2012.
    2. I had with the imac 27" i7 i ended up returning as well but not nearly as frequent.
    •        no ryhme or reason.

      

     

    btw hanging persists through both machines

  • NYCBrian Calculating status...
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    Apr 17, 2012 8:44 PM (in response to lhale)

    Just purchased a new iMac in March for photo editing and am so disappointed with its connectivity issues. This is my fifth Macintosh computer (the others have been laptops - iBook, Powerbook, Macbook pro x2) and I'm really frustrated to find that this forum is the only place where people are discussing the issue - I thought for sure it would be front and center on Apple's support page, with a link to a patch to fix the problem.

     

    When an Apple fix comes out, I hope we'll be getting an update.

  • William Kucharski Level 6 Level 6 (14,395 points)
    Currently Being Moderated
    Apr 17, 2012 9:48 PM (in response to NYCBrian)

    NYCBrian wrote:

     

    Just purchased a new iMac in March for photo editing and am so disappointed with its connectivity issues. This is my fifth Macintosh computer (the others have been laptops - iBook, Powerbook, Macbook pro x2) and I'm really frustrated to find that this forum is the only place where people are discussing the issue - I thought for sure it would be front and center on Apple's support page, with a link to a patch to fix the problem.

     

    When an Apple fix comes out, I hope we'll be getting an update.

     

    Have you tried the obvious troubleshooting steps, like making sure your router's firmware is up to date?

     

    A lot of people like to blame Apple for issues when in fact it's amazing how many people's problems are solved when their third party router vendor updates their firmware.

     

    That doesn't mean Apple issues don't exist, but rather that not every seeming "incompatibility' issue is Apple's fault.

  • NYCBrian Level 1 Level 1 (0 points)
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    Apr 18, 2012 4:09 AM (in response to William Kucharski)

    William - I'm hesitantly optimistic that updating the firmware did the trick. Thanks for the suggestion.

  • completelyterrified Calculating status...
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    Apr 20, 2012 7:26 AM (in response to lhale)

    Going to add my voice to this. Extremely frustrated that no fix is in place yet.

     

    Bought my iMac with SL last June or July, upgraded when Lion was released. Ever since then, I've had a whole world of problems with wifi. Strangely, for a month or two, the problem completely vanished, then over the past 2-3 weeks, it's come back with a vengeance.

     

    I've tried all the fixes short of a full system restore, which I'm not willing to do, as the machine is our daily driver and used for my partner's teaching work - any lengthy down time will affect her ability to do her job (as will downgrading to SL for software reasons).

     

    The 'ping' solution is no longer working - a steady stream of pings to 8.8.8.8 used to do the trick, but that's now not working. I've installed the update/fix. I've gone through the removal/re-adding of locations/keychain entries, and no change. I've enabled and disabled 'N', I've changed beacon settings, I'm using the 'correct' type of security, and nothing. Often, after a reconnect or a change, it'll appear fine for 24 hours or so, then the problem will start again.

     

    Over the past few days, the connection has been dropping after around 10 seconds of re-connection. Using the diagnostic tool, I'm finding that the events logger shows BSSID changed, same as a lot of other people experiencing the issue. Also, I'll get "country code changed", which I've seen a few other people around the net getting.

     

    I know it's not a router issue, as all of my other wifi enabled products are fine, including my early 2009 MacBook with SL, which connects and remains connected in a reliable fashion. The iMac itself was also connecting fine and dandy prior to this.

     

    I'm really appalled by this. I'm a huge fan of Apple's products, and my partner is now also a heavy Mac user. It's getting harder and harder to justify the £1200 we spent on the iMac with "it just works" when wifi connectivity is so useless. I can't undestand how they've managed to get this so wrong, and stay silent on it for so long too. Media outlets should be having a field day with this, and I can't understand why they're not.

     

    Apple, please, if anyone is reading this thread, or many of the countless others, do something. When people are spending thousands of their hard earned dollars & pounds on these products, they deserve to be addressed when they have massive problems. Issue a statement. Acknowledge the fault. Do something. Anything.

     

    While I'm waiting for this fault to be resolved, can anyone recommend a good wifi USB adaptor I can use? I need to do something to keep our connection going, and the layout of our house is going to make wired connections very problematic.

  • CT Level 6 Level 6 (14,960 points)
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    Apr 20, 2012 7:30 AM (in response to completelyterrified)
  • completelyterrified Level 1 Level 1 (0 points)
    Currently Being Moderated
    Apr 20, 2012 8:00 AM (in response to CT)

    Humour attempt?

  • pillaishaun Calculating status...
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    Apr 21, 2012 12:31 AM (in response to completelyterrified)

    Guys I found the way!!! This happened unintentionally.

     

    Just use Firefox , it works! 5 days now and wifi signal has never broken so I'm thinking the problem isn't in osx , its in safari!

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