cyslmq
Level 1 (0 points)

Q: Macbook pro fails to auto connect Internet after rebooting wifi router

My macbook pro with retina can’t automatically connect to wifi after the wifi router was rebooted.

 

There is exclamation mark on wifi sign. As the picture shows, when I clicked the wifi sign, it shows no Internet connection. However, It is strange there is a tick in front of my wifi name. Moreover, in preference set, it shows a confused self-assigned IP address 169.254…(showed in picture). In order to use wifi, I had to turn wifi off, and then turn it on. And the correct IP address for my mac should be 192… (showed in picture).

 

I had tried to delete my preferred networks and tested macbook in my friend’s home, but it still failed. This bug happens in my friend’s macbook pro with retina (same to mine) and macbook air. However, the previous version, Macbook pro (not retina), has no this problem.

 

This happened just when I reboot the router. It is normal working (connect automatically) when I come back home. Appreciating for any way to solve it!

QQ20130505-3@2x.jpg

QQ20130505-4@2x.jpg

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MacBook Pro with Retina display, OS X Mountain Lion (10.8.3)

Posted on May 5, 2013 5:07 AM

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cyslmq

Q: Macbook pro fails to auto connect Internet after rebooting wifi router

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  • Helpful answers

  • by Lexiepex,

    Lexiepex Lexiepex May 5, 2013 5:29 AM in response to cyslmq
    Level 6 (10,536 points)
    Mac OS X
    May 5, 2013 5:29 AM in response to cyslmq

    The exclamation mark means that there is no connection to the internet, but the WiFi of the router is connected to your computer:

    Do Following:

    Take the power connection out of the Modem and the Router;

    Set the Airport antenna in your computer to OFF;

    Wait 10 seconds;

    Reconnect power to the Modem, let it start completely, may take a minute;

    Then reconnect power to the Router, let it start completely;

    Then set the Airport antenna to on again,

    That is all.

  • by cyslmq,

    cyslmq cyslmq May 5, 2013 8:04 AM in response to Lexiepex
    Level 1 (0 points)
    May 5, 2013 8:04 AM in response to Lexiepex

    Hi

    I have no ideas about the Airport antenna, what is it? Where can I control it on macbook? Thanks

  • by Baby Boomer (USofA),

    Baby Boomer (USofA) Baby Boomer (USofA) May 5, 2013 8:10 AM in response to cyslmq
    Level 9 (57,660 points)
    May 5, 2013 8:10 AM in response to cyslmq

    I have no clue of what an Airport antenna is either.  I know my Airport Extreme does not have one.

     

    Try the basics first:

       Change your router channel number.  Most times this works & is all you have to do.

     

    Disconnect & reconnect your modem.  unplug it for about 10 seconds.  Plug it back in.  Do the same for Apple’s routers.  Wait for everything to reboot.

     

    System Preferences>Network

    Click the Assist Me button.

    In the next window that pops up, click the Diagnostic button & do the necessary.

     

    Research Knowledge Base for network problems that pertain to the OS that is currently installed on your computer.   See these basic networking KB Articles:  http://support.apple.com/kb/HT1401 AirPort troubleshooting guide

     

    http://support.apple.com/kb/HT2712 Using network locations in Mac OS X

     

    Manually provided DNS server addresses are higher priority than DHCP's

     

    http://support.apple.com/kb/HT1714 Solutions for connecting to the Internet, setting up a small network, and troubleshooting

     

    ============================

     

    What to do when you can't connect to the Internet

     

    Also, run the Airport Utility app which is located inside the Utilities folder.

     

    =====================

     

    If using a  Linksys router, contact LinkSys Customer Support and/or post in their forums.

     

    If using Apple's Airport, please re-post over in one of the AirPort Forums.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

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  • by cyslmq,

    cyslmq cyslmq May 5, 2013 8:26 AM in response to Baby Boomer (USofA)
    Level 1 (0 points)
    May 5, 2013 8:26 AM in response to Baby Boomer (USofA)

    Hi

    Why it should be work by changing the control channel? Why the channel just affects "router rebooted" action, since it is normal when i normally use it.

  • by Baby Boomer (USofA),

    Baby Boomer (USofA) Baby Boomer (USofA) May 5, 2013 8:31 AM in response to cyslmq
    Level 9 (57,660 points)
    May 5, 2013 8:31 AM in response to cyslmq

    If a lot of people are connecting to same channel, it can affect your wifi access.  Reason why you should try changing the channels.

     

     

     

     

     

     

     

     

     

     

     

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  • by LowLuster,

    LowLuster LowLuster May 5, 2013 8:31 AM in response to cyslmq
    Level 6 (12,074 points)
    May 5, 2013 8:31 AM in response to cyslmq

    What is meant by "Airport antenna' is the wifi icon in the menu bar. It looks like a antenna. But to me is looks more like radio waves beaming out from a antenna

    cyslmq wrote:

     

    Hi

    I have no ideas about the Airport antenna, what is it? Where can I control it on macbook? Thanks

  • by Lexiepex,

    Lexiepex Lexiepex May 5, 2013 9:52 AM in response to cyslmq
    Level 6 (10,536 points)
    Mac OS X
    May 5, 2013 9:52 AM in response to cyslmq

    @cyslmq:

    Yes, the Airport Antenna is represented by the icon on the menu bar.

    @babyboomer:

    the WiFi can be influenced by interference, but that is not the case here, it is the internet connection between the modem and the router, that is not working.

  • by cyslmq,

    cyslmq cyslmq May 5, 2013 4:19 PM in response to Lexiepex
    Level 1 (0 points)
    May 5, 2013 4:19 PM in response to Lexiepex

    Yep. But this only happened in router rebooted action. And my router and modem is a combined device, so I can't reboot them seperately. And I have done the channel changing, but it didn't work as well.

  • by Lexiepex,

    Lexiepex Lexiepex May 6, 2013 12:10 AM in response to cyslmq
    Level 6 (10,536 points)
    Mac OS X
    May 6, 2013 12:10 AM in response to cyslmq

    As I said, missing the internet connection has not to do with the wifi channel. If you have a combined device you have to restart it as I suggested (Modem and router at the same time inevitably). Did you do that?

  • by cyslmq,

    cyslmq cyslmq May 6, 2013 12:19 AM in response to Lexiepex
    Level 1 (0 points)
    May 6, 2013 12:19 AM in response to Lexiepex

    Surely I did that many times. I switched off the power of the modem and router(combined device), and then turn on. Actully it is normal if I forwardly connected my mac to wifi. The problem only existed when I rebooted the router, so that my mac can't connect to it automatically. Because in a good working situation, it should be connected automatically.

  • by Lexiepex,

    Lexiepex Lexiepex May 6, 2013 2:45 AM in response to cyslmq
    Level 6 (10,536 points)
    Mac OS X
    May 6, 2013 2:45 AM in response to cyslmq

    You are right, it shold connect automatically to the internet.

    Did you by any chance also reset the modem/router when you put it off and on (the reset button or little hole)?

    Have you changed some settings in the modem router?

    It is confusing me that the WiFi net connects to an ip address other than 192.168.....

    Settings normally are "using dhcp" so that the wifi net distributes an address to the devices to connect, that can change but is in the 192.168..... range.