Ethernet and Wi-Fi cuts out every 20-30 mins

Discussion in 'OS X Mountain Lion (10.8)' started by copydeskcat, Nov 23, 2012.

  1. copydeskcat macrumors regular

    Joined:
    Jun 12, 2008
    #1
    I've been on Mountain Lion on my Mac Mini since it came out, and I get this same problem on a daily basis:

    my network connection times out every 20-30 mins, for roughly 2-3 minutes at a time, then comes back on with no prompting from me.

    It was doing it when I was connected on wifi, so I turned off wifi and moved to ethernet - and it's still doing it. I tried changing the MTU setting to 1453, tried using a static IP address and reserving one on my router. I've had the cable company out (VirginMedia) and they can't find anything wrong with my connection or my modem/router (known as a Superhub). It only seems to happen on my Mac, not on any other devices.

    Does anyone have any idea what's going on here? Is it a Mountain Lion bug?

    Best,


    CDC
     
  2. z06gal macrumors 6502

    Joined:
    Aug 30, 2011
    #2
  3. copydeskcat thread starter macrumors regular

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    Jun 12, 2008
    #3
    Yep, I've done all that before - it hasn't made any difference. It's happening on wifi and ethernet.
     
  4. z06gal macrumors 6502

    Joined:
    Aug 30, 2011
    #4
  5. copydeskcat thread starter macrumors regular

    Joined:
    Jun 12, 2008
    #5
    It's definitely not solely a wifi problem. I have wifi switched off and ethernet only, and it's still doing it. I wonder if it's a network card issue?
     
  6. z06gal macrumors 6502

    Joined:
    Aug 30, 2011
    #6
    It seems like it has to be if ethernet is doing the same thing. I haven't had the ethernet issue and my wifi drops have been rare....couple times a week. Your issue sounds hardware related
     
  7. fisherking macrumors 601

    fisherking

    Joined:
    Jul 16, 2010
    Location:
    ny somewhere
    #7
    if it's happening in regular intervals, i doubt it's hardware...especially since you say it started with ML.

    have you tried contacting apple? or going to the, cough, "genius bar"?
     
  8. copydeskcat thread starter macrumors regular

    Joined:
    Jun 12, 2008
    #8
    Contemplating making a Genius Bar appointment.

    Is there anyway I can monitor my ethernet network activity and take a log of it?
     
  9. Krazy Bill macrumors 68030

    Krazy Bill

    Joined:
    Dec 21, 2011
    #9
    Don't bother. Your connection will work perfectly at the Apple Store and pass all tests. They will tell you to contact your service provider.
     
  10. copydeskcat thread starter macrumors regular

    Joined:
    Jun 12, 2008
    #10
    It's 100% not my service provider. They've tested and tested the line, the router and the connection out in the street.

    When it happens, I can access the net fine on every other device in the house. It's local to the Mac Mini, no question.
     
  11. Krazy Bill macrumors 68030

    Krazy Bill

    Joined:
    Dec 21, 2011
    #11
    Which is why I said don't bother. Apple will not acknowledge the fickle wi-fi issue.
     
  12. copydeskcat thread starter macrumors regular

    Joined:
    Jun 12, 2008
    #12
    Like I say, it's not limited to wifi. It's happening on Ethernet too, with wifi switched off.
     
  13. chickaboom, Nov 24, 2012
    Last edited: Nov 24, 2012

    chickaboom macrumors newbie

    Joined:
    Nov 24, 2012
    Location:
    Baku, Azerbaijan
    #13
    It's a Mountain Lion bug unfortunately. I have the exact same problem and have no luck in fixing it, although I've read what feels like thousands of posts/threads on this. Here's one with some solutions you might try: http://forums.macrumors.com/showthread.php?t=1451152

    Some of the suggestions are:
    reset PRAM
    reset SMC
    renew DHCP license
    delete your wifi connection and create a new one
    empty cache on all browsers
    manually add a new IP address
    change the MTU to 1453
    delete the password in Keychain Access
    fresh install of 10.8.2
    etc. etc., just follow the link or Google "Mac 10.8.2 problems"

    Nothing has worked for me sadly. To make matters worse I travel a lot for work and can't get a decent connection if I can get online because I'm in hotels and can't access routers to maybe troubleshoot if it that is even the problem. That means not being able to work properly and not being able to talk to my family. I'm so fed up.

    I hope one or some of the above work for you. It seems that different solutions work for different people, so keep trying. Good luck!
     

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