sflomenb
Level 1 (40 points)

Q: Mountain Lion disconnect from Ethernet in sleep mode

I have a late 2009 iMac running Mountain Lion. I use a program called LogMeIn to remotely access my iPhone from other computers and my iPhone. This app worked in Lion, since it was able to work even if my iMac was in sleep mode. However, in Mountain Lion, my iMac looses connection to both my Ethernet and Wi-Fi when it is in sleep mode, renedering LogMeIn useless. In order to use it, I had to sett sleep to never in the Energy Saver prefrences.

 

So basically, all networking stops on sleep, on both Ethernet and Wi-Fi. I did not encounter this problem in Lion, but ever since upgrading to Mountain Lion it's been happening. Does anyone have any suggestions to fix this? Is anyone else havin

iPhone 4S, iOS 5.1.1, Verizon, 16 GB, Black

Posted on Jul 30, 2012 4:07 AM

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sflomenb

Q: Mountain Lion disconnect from Ethernet in sleep mode

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  • by alfredo87,

    alfredo87 alfredo87 Sep 23, 2012 1:41 AM in response to kevinwschafer
    Level 1 (5 points)
    Sep 23, 2012 1:41 AM in response to kevinwschafer

    Hi to all on this forum,

     

    the 10.8.2 update does nothing to resolve this issue.

    After a thunderstorm and lightning slowed my Orange.fr internet to 80 KB/sec I downloaded the update and nothing has changed the disconnect problem!

     

    We all have to carry-on waiting for the Apple reply:

    here is a challenge to this forum:

    which value to give to X in the expression 

    "Update 10.8.X is available"

     

    Only values greater than 2 are allowed....

  • by bsu1960,

    bsu1960 bsu1960 Sep 23, 2012 1:59 AM in response to alfredo87
    Level 1 (0 points)
    Sep 23, 2012 1:59 AM in response to alfredo87

    Howdy Alfredo87,

     

    I really had high hopes 10.8.2 would be the magic fix for the loss of internet connectivity on my 2 Apple Computers.

     

    Sadly the trouble persists.

     

    All you can do is restart the computer as you use it and then just shutdown when your done.

     

    I am really shocked, and too perturbed for kind words.

     

    Apple is turning into Microsoft.

  • by margate,

    margate margate Sep 23, 2012 2:31 AM in response to bsu1960
    Level 1 (0 points)
    Sep 23, 2012 2:31 AM in response to bsu1960

    Just wonder,

     

    Do you all have "Configure : Automatically" on Network / Hardware Tab, other settings is

    Speed:      1000baseT

    Duplex:      full-duplex, flow-control

    MTU:         Standard (1500)

     

     

    I'm using DHCP and static DNS entries, my lease time is back to normal 7200, besides that I haven't seen the problem since I did SMC reset and the safe boot, running 10.8.2

     

    I use LAN, not WIFI

     

    Maybe disconnect 30 minutes or so, doing SMC reset, I unplugged before I left for work

  • by bsu1960,

    bsu1960 bsu1960 Sep 23, 2012 11:13 AM in response to margate
    Level 1 (0 points)
    Sep 23, 2012 11:13 AM in response to margate

    I am connected to the internet-- sporadically-- using wifi -  with an Airport Extreme wireless device.

  • by alfredo87,

    alfredo87 alfredo87 Sep 23, 2012 1:18 PM in response to bsu1960
    Level 1 (5 points)
    Sep 23, 2012 1:18 PM in response to bsu1960

    hi bsu1960

     

    it's happening already: this is update 10.8.X to come soon to our iMacs!!

     

    windows-to-apple.png

    only joking!!

  • by kaleio,

    kaleio kaleio Sep 23, 2012 2:05 PM in response to alfredo87
    Level 1 (5 points)
    Sep 23, 2012 2:05 PM in response to alfredo87

    That was really funny!  You had my hopes up there for a second.

  • by kevinwschafer,

    kevinwschafer kevinwschafer Sep 23, 2012 5:15 PM in response to sflomenb
    Level 1 (0 points)
    Sep 23, 2012 5:15 PM in response to sflomenb

    All,

    since my last post I have re-enabled the hard drive sleep.  My setting is to let the hard drive sleep after 15 mins.  So far so good....no issues.  Have not had the ethernet disconnect and when waking, it connects in a timely manner.  Hopefully this helps everyone and gets the attention of Apple.

     

    So....to restate what I have done to get through this....manually set my dns severs to open dns and googles.  Also, changed the search domains to be http://www.bing.com (I am sure if you set it to google or yahoo or whomever it will work).

  • by boisebimmer,

    boisebimmer boisebimmer Sep 23, 2012 5:22 PM in response to kevinwschafer
    Level 1 (130 points)
    Sep 23, 2012 5:22 PM in response to kevinwschafer

    Sorry I didn't read every post in the forum.

     

    Did you rename the system configuration folder and drag it to the desktop?

  • by kevinwschafer,

    kevinwschafer kevinwschafer Sep 23, 2012 5:42 PM in response to boisebimmer
    Level 1 (0 points)
    Sep 23, 2012 5:42 PM in response to boisebimmer

    No...all I did was manually set my dns sever in my ethernet settings.  Like this:

    dns_2.png

    dns_1.png

     

     

    That's it...simple.  I fought with this for days....was getting real upset that the ethernet wasn't stable.  Then I noticed my log in my router was getting hit with dhcp requests and was erroring....thought that was weird.  I also stumbled upon an old forum dated sometime earlier this year with programmers writting code for something and thet were having problems with dns requests.  Here is that link again for the forum:  http://code.google.com/p/tunnelblick/issues/detail?id=206

  • by lucas2999,

    lucas2999 lucas2999 Sep 23, 2012 9:06 PM in response to kevinwschafer
    Level 1 (0 points)
    Sep 23, 2012 9:06 PM in response to kevinwschafer

    My setting is to let the hard drive sleep after 15 mins. 

     

    Where is the setting for hard drive sleep in minutes ??

     

    BTW: I have 10.8.2 clean installed on a second hard drive to test.. Same issue

  • by kevinwschafer,

    kevinwschafer kevinwschafer Sep 24, 2012 3:21 AM in response to lucas2999
    Level 1 (0 points)
    Sep 24, 2012 3:21 AM in response to lucas2999

    I am sorry, that was an incorrect statement.  It's the computer sleep at 15 mins.  That setting is under "System Preferences"...then "Energy Saver".  And for all of you wanting updates, again this morning when I "Woke" my iMac 21.5" mid-2011, the ethernet connection connected without any issues.

  • by margate,

    margate margate Sep 24, 2012 8:36 AM in response to sflomenb
    Level 1 (0 points)
    Sep 24, 2012 8:36 AM in response to sflomenb

    Hi

     

    Are u all on right EFI and SMC levels

     

    http://support.apple.com/kb/HT1237

     

     

     

    Model Name:          iMac

    Model Identifier:          iMac12,2

    Processor Name:          Intel Core i7

    Processor Speed:          3,4 GHz

    Number of Processors:          1

    Total Number of Cores:          4

    L2 Cache (per Core):          256 KB

    L3 Cache:          8 MB

    Memory:          16 GB

    Boot ROM Version:          IM121.0047.B1F

    SMC Version (system):          1.72f2

  • by lucas2999,

    lucas2999 lucas2999 Sep 24, 2012 8:58 AM in response to margate
    Level 1 (0 points)
    Sep 24, 2012 8:58 AM in response to margate

    Now i have 10.7.5 clean installed on my external hard drive - and all is fine..

     

    SMC / PRAM reset / Safe mode / DNS and all the hints here have not helped..

     

     

    I go back to Lion.. I need my system for work...shame

  • by alfredo87,

    alfredo87 alfredo87 Sep 24, 2012 9:04 AM in response to margate
    Level 1 (5 points)
    Sep 24, 2012 9:04 AM in response to margate

    I bought the iMac about a month ago: EFI and all up to date.

    This is a 'red herring'

     

    The fact is that Apple does not care for their users and they will first to have to accept that this is a bug, then give it to some 'genius guru' to work on it and then, and only then, tell us that the update includes the' network connection sleep on iMacs' bug correction.

     

    DISGUSTING BEHAVIOUR .... Apple, please, correct it soon, please!!

  • by Chris96,

    Chris96 Chris96 Sep 25, 2012 8:35 AM in response to sflomenb
    Level 1 (0 points)
    Sep 25, 2012 8:35 AM in response to sflomenb

    My solution....

    Turn on in iCloud settings Back to my Mac.

     

    since then no drop for me...

     

    cheers.

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