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Internet Drops

350 Views 12 Replies Latest reply: Dec 22, 2012 4:03 PM by Trane Francks RSS
IndianaJones10 Calculating status...
Currently Being Moderated
Dec 21, 2012 10:09 AM

Macbook, 13-in, Aluminum, late 2008 2.4 GHz Intel Core 2 Duo 4 GB 1067 MHz (I upgraded from 2 GB) OS X 10.8.2

No Applecare left, either on computer or Mountain Lion update.

My wireless network seemingly drops out for no reason, and I can't seem to pinpoint the reason each situation seems different. It has happened with the computer both open and closed moving between rooms. It has happened while sitting in the same room all day. There really is no rhyme or reason that I can discover.

Running network diagnostics does not help, it is extremely slow in stating the internet is not connected. I get full bars of connection, run the diagnostic and its says everything is fine. If I leave it long enough it will eventually say not connected, or clicking on the network is will say connection timed out.

I've had the cable company in, they analyzed the network it was seemingly fine. Sent a repairman to check out the hard connections and to replace modem. The issue still occurs, I bought a new router, problem still occurs so I ended up returning it.

The modem seemingly does what every it wants as well. I go to reset it, and either the Internet light is blinking and all the others are off including the power light even though its plugged in. Or they are all on, but the internet still drops.

I believe its the computer, but I don't know how to go about troubleshooting it or fixing it. My iphone, my roommate's iphone and macbook are all connected to the internet no problem. Just my computer.

Sorry for the wall of text. Please let me know if there is any information I still need to provide in order for you to help. Thank you so much, any help would be greatly appreciated!

MacBook (13-inch Aluminum Late 2008), OS X Mountain Lion (10.8.2)
  • Trane Francks Level 2 Level 2 (205 points)
    Currently Being Moderated
    Dec 21, 2012 6:23 PM (in response to IndianaJones10)

    Hi.

     

    The first thing to try is fixing your permissions in Disk Utility. I had a client once who had constant Wifi problems until we fixed his perms. Suddenly, his networking worked perfectly. If that doesn't solve the problem for you, at least we'll have ruled out one possibility.

  • Trane Francks Level 2 Level 2 (205 points)
    Currently Being Moderated
    Dec 22, 2012 12:18 AM (in response to IndianaJones10)

    Hi again.

     

    It might be worth creating a new location in your Network preferences and then connecting to your wireless network again with a new configuration in that newly created location. If that stabilizes your connection, it would indicate some kind of corruption within your default (Automatic, likely) location.

  • Trane Francks Level 2 Level 2 (205 points)
    Currently Being Moderated
    Dec 22, 2012 12:55 AM (in response to IndianaJones10)

    Hi. Another thought: Is your wifi router using WEP or WPA/WPA2? I've read that some folks have experienced problems with WEP and that changing to WPA or WPA2 enabled a more stable connection.

  • Trane Francks Level 2 Level 2 (205 points)
    Currently Being Moderated
    Dec 22, 2012 3:28 PM (in response to IndianaJones10)

    Hi. Yes, it would be good to enable WPA2 and then redo your connection from the Mac so that you see the connection as WPA2 Personal in your Preferred Networks section of System Preferences - > Networks - > AirPort - > Advanced - > AirPort. Even should it not fix the immediate problem, it improves security.

     

    The mix-mode configuration of the router shouldn't pose an issue, but if you're sure that you have no devices that need A or B modes, go ahead and try go G-only. Most articles I've read regarding these issues actually suggest disabling G-only and going mixed-mode, so whether it'll work is mostly up to the quirks of your system at this point.

     

    Other things to work through (one at a time rather than all at one go):

     

    • Check your DHCP settings in the router to ensure that you're not running out of IP addresses (it's not likely, but still); you should have the full subnet enabled for the DHCP lease pool;
    • Reset your NVRAM, done by powering off the system, powering up and immediately holding the Cmd-Opt-P-R keys (yeah, 2 hands there )  -- keep holding till you hear the startup tone twice, then release;
    • Reset your SMC, done one of two ways: 1. (systems with removable batteries) take out battery, disconnect AC, press and hold power button for 5 seconds; 2. (systems with nonremovable batteries) shutdown computer, make sure AC is connected, press and hold Shift-Ctrl-Opt and power button for 5 sec and then release all at the same time; then press the power button on the computer;
    • Safe Boot to clean all your system caches, etc., by holding the Shift key at the startup tone;
    • Nuke your user profile's network settings: delete com.apple.internetconfigpriv.plist and com.apple.internetconfig.plist files from ~/Library/Preferences and reboot;

     

    For the last gem, I'd be more inclined to locate the files and move them for safe-keeping. This lets you restore them should removal not solve the problem.

     

    Good luck and may the Force be with you.

  • Trane Francks Level 2 Level 2 (205 points)
    Currently Being Moderated
    Dec 22, 2012 3:36 PM (in response to IndianaJones10)

    I almost forgot!

     

    Download iStumbler: http://istumbler.net/downloads/istumbler.html

     

    This is a great utility for letting you view networks in the neighbourhood and see what channels are being used. This will enable you to determine whether a channel may be creating issues for your network. The mapping is viewable here:

     

    http://en.wikipedia.org/wiki/List_of_WLAN_channels

  • Trane Francks Level 2 Level 2 (205 points)
    Currently Being Moderated
    Dec 22, 2012 3:57 PM (in response to IndianaJones10)

    I wouldn't necessarily disable WPA, but you do want your own connection to utilize WPA2 Personal. The other issue I touched on earlier, which you didn't remark on, was regarding creating a new network location and joining the network under the new location. This is a very useful step in troubleshooting corruption in network settings.

     

    Cheers.

  • Trane Francks Level 2 Level 2 (205 points)
    Currently Being Moderated
    Dec 22, 2012 4:03 PM (in response to IndianaJones10)

    You're most welcome. Thanks for the clarification.

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