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Lion WiFi Connection Problem

668370 Views 2,670 Replies Latest reply: Apr 23, 2014 2:58 PM by ElJefeGrande RSS
  • cmitche1 Calculating status...
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    Apr 15, 2013 3:17 PM (in response to gphonei)

    gphonei

     

    It's a 13in 8,1 MacBook Pro (Early 2011)

  • samrolli Calculating status...
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    Apr 16, 2013 7:39 AM (in response to lrogersinlv)

    Hi there, Not sure if this is the right post for this but I am running a 15" MBP Retina with Mountain Lion, all of my software is up-to-date.

     

    This evening I was on my home wifi like normal, and my computer all of the sudden dropped the connection.Other wifi connections were still showing up in the dropdown and Both my wife and I's iphones were still connected to the home wifi. I figured the router needed to be reset so I did that, and no change.

     

    I've tried manually "Join Other Network" and still nothing, I've cleared my preferred networks list and then re-added the home wifi to the list, still nothing. Ran a scan to make sure it wasn't a spyware bug or something like that, nothing. From what I understand this issue is pretty common with Lion and Mountain Lion.

     

    Can Anyone help? I'd prefer to not have to go in and change my router settings as that isn't really fixing the problem, it sounds like its in the Lion software, wondering if there are any other fixes to this problem?

     

    Thank you in advance!

  • gphonei Level 1 Level 1 (0 points)
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    Apr 16, 2013 7:50 AM (in response to renzofromroma)

    renzofromroma wrote:

     

    As I already wrote above I have an iphone 5 which is capable (in theory) to transmit on the 5GHZ band. The phone of the guy was a small one, but I don't know which model (it was not a tablet).

    Okay, thanks for the info, I missed seeing that.  I also have an iPhone 5, and the wifi antenna system seems to be a little bit lacking to me as well.  I usually have my iPad or laptop with me as well, and I pull one of those out if needed.  I carry a Verizon MiFi device with me, and I use that most of the time, so my WiFi connection is close. So, I don't usually have problems with getting WiFi if I need it.  I have the original $30/mon, unlimited Data account on my phone, and the LTE speeds are usually acceptable in my home town, so having public WiFi is not usually something I worry about.  In fact, many public WiFi services are slower or stutter more than my LTE connection.  But, in other cities, I often experience slower or very broken connectivity.  There is nothing very dependable about RF when there are multiple users sharing the channel, and multiple transmissions going on around you, swamping the receiver.

  • gphonei Level 1 Level 1 (0 points)
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    Apr 16, 2013 3:39 PM (in response to samrolli)

    samrolli wrote:

     

    Can Anyone help? I'd prefer to not have to go in and change my router settings as that isn't really fixing the problem, it sounds like its in the Lion software, wondering if there are any other fixes to this problem?

     

    Thank you in advance!

    Hold down the "Option" key on your macbook, and click on the WiFi/Airport icon in the top bar.  You will see a menu item that says "Open Wi-Fi Diagnostics...".  Select that option.  Select "Turn on Debug Logs" and click "Continue".  Select "Basic Logs".  Check the box at the bottom that reads "Notify me when the Wi-Fi interace, and choose "Disconnects from the network" in the drop down next to that.

     

    Now, you should have some logging information accumulating which will help identify what issues your airport interface is having with your router.

     

    When a disconnect occurs, you can look through those logs.

     

    If you have Apple Care, call Apple and talk to them on the phone, or make a genious bar appointment, and take your router and your computer with you.

  • cmitche1 Level 1 Level 1 (0 points)
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    Apr 16, 2013 8:49 PM (in response to gphonei)

    gphonei wrote:

     

    cmitche1 wrote:

     

    Oh, and I figured out how to change the channel - didn't work AND it doesn't solve my issues that no matter what router I'm connected to I cannot increase my download speeds.

    Which model and year macbook do you have?

     

    As an update, I made a small partition (~20 GB) on my MBP 8,1 and tested a clean install of Snow Leopard... and the download speed was great. So I reformatted the entire disk to Snow Leopard, only to find that download speeds sucked again. So I went ahead and upgraded back to Lion. THEN I partitioned the drive and installed Lion on a smaller partition just to see what would happen, and to my surprise the download speeds were WORSE! I ran it at speedtest.net and it resulted in 1.0 mb/s and a 300 mb download showed over an hour to download.

     

    Now I'm back to Lion on my full disk and a 300 mb download takes about 1 hour via wifi and about 30 minutes via LAN. Not bad, however, AGAIN the PC at my work desk downloaded the same 300 mb file in less than 5 minutes.

     

    What's the deal? I know it MUST be the Lion OS because it doesn't matter which wifi port I use (work, home, cafe, etc.).

  • gphonei Level 1 Level 1 (0 points)
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    Apr 16, 2013 9:40 PM (in response to cmitche1)

    cmitche1 wrote:

     

    gphonei wrote:

     

    cmitche1 wrote:

     

    Oh, and I figured out how to change the channel - didn't work AND it doesn't solve my issues that no matter what router I'm connected to I cannot increase my download speeds.

    Which model and year macbook do you have?

     

    As an update, I made a small partition (~20 GB) on my MBP 8,1 and tested a clean install of Snow Leopard... and the download speed was great. So I reformatted the entire disk to Snow Leopard, only to find that download speeds sucked again. So I went ahead and upgraded back to Lion. THEN I partitioned the drive and installed Lion on a smaller partition just to see what would happen, and to my surprise the download speeds were WORSE! I ran it at speedtest.net and it resulted in 1.0 mb/s and a 300 mb download showed over an hour to download.

     

    Now I'm back to Lion on my full disk and a 300 mb download takes about 1 hour via wifi and about 30 minutes via LAN. Not bad, however, AGAIN the PC at my work desk downloaded the same 300 mb file in less than 5 minutes.

     

    What's the deal? I know it MUST be the Lion OS because it doesn't matter which wifi port I use (work, home, cafe, etc.).

    I don't know what could be causing such weird problems, except for this list of things:

     

    1.  Are you sure that your internet connection is not lagging due to other load; i.e., can you do the same download at the same time on another device and see one always being considerably faster? networking bandwidth "sharing" doesn't really exist in general, no quality of service guarentees are typically recognizable in the form of "shared" bandwidth.  If you can rule out that noone else is saturating the network, then that would be helpful.

    2.  The number of applications running, including "addons" in your browser and how the "download" is done, can create variability because of how "fast" new "read requests" from the network can be dispatched, as well as "TCP ACKs" that will cause more, higher speed streaming from the sender.

    3.  Your experiences with different "OSes" on the disk in different places, still makes me feel like you have something going on with your disk drive.  Look at http://support.apple.com/kb/ht1509 for information on how to run hardware diagnostics to see if you can find a problem with your disk or some other part of your computer.

     

    Let us know what you can find that's more definative and repetable.  Reloading the OS on different places on the disk and getting different results could be an indication of disk surface problems.  But, it could also be that you had an older version of something, or an addon doing something in your web browser.

     

    Did you try curl or wget to do the download outside of your web browser?

  • aldusw Calculating status...
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    May 17, 2013 2:16 PM (in response to lrogersinlv)

    To fix:

     

    Go to System Preferneces, Network

    Click on the Location drop down - which may be set to Automatic

    Click edit

    Add a new location

     

    When done click on Advanced..., TCP/IP, Renew DHCP lease

     

    Your connection should now work

     

    Solved it for me - tried a bunch of more technical solutions first none of which worked for more than a short while

  • gphonei Level 1 Level 1 (0 points)
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    May 18, 2013 9:19 AM (in response to aldusw)

    aldusw wrote:

     

    To fix:

     

    Go to System Preferneces, Network

    Click on the Location drop down - which may be set to Automatic

    Click edit

    Add a new location

     

    When done click on Advanced..., TCP/IP, Renew DHCP lease

     

    Your connection should now work

     

    Solved it for me - tried a bunch of more technical solutions first none of which worked for more than a short while

    These things are what is done normally by OS-X when your Airport/WiFi is turned on, and you have no connection, and the list appears to select a WiFi access point from.   If this is all it takes to solve the problem, then something has become corrupted/changed in your old WiFi configuration.  In many of the posts here, Apple Care support and In-Store employees have guided people to delete all WiFi entries and set a new one up.

     

    So, this is a known "step", which can work for some problems.  But, that problem is not the only problem people are experiencing.  Some people are having ISP problems.  Some people are having router firmware compatibility problems.  Others, are just having issues like this, which are related to "random" efforts by individuals to fix a problem by "poking" at it from every angle that they can find something to "change" on their machine, because they do not have the expertise to undertand how to work through each of the associated details/technologies to fix the real problem.

  • aldusw Level 1 Level 1 (0 points)
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    May 18, 2013 12:47 PM (in response to gphonei)

    I must apologise to all those folks who install Lion and suddenly discover that all the time their ISP settings, their router firmware and their knowledge of anything technical have in fact been completely wrong and must now be adjusted to correct the errors that the lastest versions of OSX can't and shouldn't possibly be expected to cope with.

     

    What occurred to me - having trawled through any number of potential solutions, was that my router was fine, my ISP settings were fine, and it might just be some quirky function of Lion that was making it constantly drop connections despite all other devices having no issues. So I was looking for a more basic solution. 

     

    I thought it might be worth sharing, given that it worked... particularly given that it then occurred to me that if a new MBPR running Lion could be fixed by this - I should apply it to my aging Mac Mini which, struggling with software designed to make you upgrade hardware, had also been having no end of wifi issues since putting Lion on - and I was indeed vindicated in that this machine has now also improved in terms of keeping its connections.

  • gphonei Level 1 Level 1 (0 points)
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    May 18, 2013 6:15 PM (in response to aldusw)

    aldusw wrote:

     

    I must apologise to all those folks who install Lion and suddenly discover that all the time their ISP settings, their router firmware and their knowledge of anything technical have in fact been completely wrong and must now be adjusted to correct the errors that the lastest versions of OSX can't and shouldn't possibly be expected to cope with.

     

    What occurred to me - having trawled through any number of potential solutions, was that my router was fine, my ISP settings were fine, and it might just be some quirky function of Lion that was making it constantly drop connections despite all other devices having no issues. So I was looking for a more basic solution. 

     

    I thought it might be worth sharing, given that it worked... particularly given that it then occurred to me that if a new MBPR running Lion could be fixed by this - I should apply it to my aging Mac Mini which, struggling with software designed to make you upgrade hardware, had also been having no end of wifi issues since putting Lion on - and I was indeed vindicated in that this machine has now also improved in terms of keeping its connections.

    There certainly can be some software problems in Lion.  Working through all of the issues to see which issue you are actually having is the painstaking process that people just don't spend the time to deal with, because it's easy to look at this, and the other "epic tales" on the internet about "Lion WiFi problems" and just decide that this any WiFi problems are "just" the Lion problem and there is nothing to do buy sit around and whine about it.

     

    Practically some people have a problem that they still have no solution to, but are unwilling to work through the details to figure it out.

     

    They think that Apple should be able to make Lion do everything to "fix" all possible problems, automatically.  What they don't understand is that Windows and many other products that use WiFi, are using "old technologies" because they are cheap to deploy and higher profit.  The end result, is that those things are now 10 years old, and are working because they've been on the market for a decade and have been patched and fixed, forever now.

     

    Apple, to support AirPlay, AirDrop and many other "higher bandwidth use" applications, decided to use 802.11n with MiMo, and there are just so many broken implementations of that, as a newer standard, on old routers that have never been "patched" or "upgraded" to fix/repair the issues. 

     

    I know that these things are not all of the issues.  However, understanding all the possible places where issues exist, and being able to work through the problems to pinpoint the real issue is what is required.

     

    Like it or not, that's where things are at...

  • msurowiec Level 1 Level 1 (15 points)
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    May 22, 2013 7:25 PM (in response to lrogersinlv)

    I hope this helps some folks out as it resolved my TIME OUT issues with Wifi for all of my devices using 2.4ghz.

     

    My router, a Belkin n750DB, was using NTP servers primary 192.43.244.18 and secondary 192.5.41.41 in North America that were serving the wrong date and time. The year was set as 1970.

     

    I changed NTP servers to different North American NTP's and everything works as advertised.

     

    For Apple routers the correct server should be time.apple.com or some addres you know that works. I also think(though not completely certain) the latest updates in the airport utility have stripped some NTP features so you'll have to roll back your Airport Utility to manipulate the settings.

     

    My gear:

    Macbook Pro 15" Early 2011

    Verizon Fios

    Belkin n750DB

  • gphonei Level 1 Level 1 (0 points)
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    May 24, 2013 7:22 AM (in response to msurowiec)

    msurowiec wrote:

     

    I hope this helps some folks out as it resolved my TIME OUT issues with Wifi for all of my devices using 2.4ghz.

     

    My router, a Belkin n750DB, was using NTP servers primary 192.43.244.18 and secondary 192.5.41.41 in North America that were serving the wrong date and time. The year was set as 1970.

     

    I changed NTP servers to different North American NTP's and everything works as advertised.

     

    For Apple routers the correct server should be time.apple.com or some addres you know that works. I also think(though not completely certain) the latest updates in the airport utility have stripped some NTP features so you'll have to roll back your Airport Utility to manipulate the settings.

    $ dig -x 192.43.244.18 | grep 'PTR[         ][a-z]'

    18.244.43.192.in-addr.arpa. 6175 IN          PTR          time.nist.gov.

    $ dig -x 192.5.41.41 | grep 'PTR[   ][a-z]'

    41.41.5.192.in-addr.arpa. 130          IN          PTR          tock.usno.navy.mil.

     

    I would not expect NIST to be handing out bad times.  I would be suspect of anyone else.  I use time-a.nist.gov and time-b.nist.gov if I am setting them manually. 

     

    It sounds like your were getting times very distant in the past (the UNIX epoch time of 0, is Jan 1, 1970) and that would cause your "DHCP Lease" to be "expired" and it would be constantly trying to "renew" the lease.  But, I am not sure that it would "drop" the connection.

     

    This is another great example of how many external factors come into play on whether your "WiFi" will work or not work.

  • James Wilde Calculating status...
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    Jun 23, 2013 12:49 AM (in response to gphonei)

    I'm actually running ML rather than Lion, but the problems are the same.

     

    In my case I had no problem with ML and wifi until an upgrade in, I think, December of 2011.  I've tried many of the suggestions, some a little esoteric, in this thread without success.  I have changed my router and tested Linksys, Netgear, D-link, Huawei and my current TP-link.  I've tried usb wifi adapters and the built-in adapter and nothing has worked.

     

    Now before I give up with a sigh and go back to Linux, I'm wondering if anyone has tested a re-install from original disk and found that the problem goes away.  Of course you'd have to disable automatic updates, but I'd rather have a version that works even if it doesn't have all the latest gizmos.

     

    //James

  • freediverx01 Level 1 Level 1 (40 points)
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    Jun 23, 2013 5:47 AM (in response to James Wilde)

    James, since a clean reinstall is a tedious process - and one with uncertain results - have you considered creating a separate boot partition (either on your internal drive or an external one) and creating a clean install there? Booting from that clean installation should allow you to determine whether the issue is hardware or software related, without messing with your existing OS installation.

     

    Needless to say, if you go this route avoid any sort of personalization or software installation on the new boot partition to ensure you're working with a truly clean install.

     

    Provided you have either the available disk space or an available external drive, this should be a very low effort endeavor.

  • James Wilde Level 1 Level 1 (0 points)
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    Jun 23, 2013 8:21 AM (in response to freediverx01)

    Thanks for the idea, Freediverx01.  Whilst I have regularly moved and resized partitions in Windows and linux, I've always been a little shy  about it under OS X.  Or I might put my clean install on a usb stick and try from there.

     

    Regards

     

    //James

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