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  • 195. Re: Mountain Lion disconnect from Ethernet in sleep mode
    hexdiy Level 1 Level 1 (60 points)

    OK. Btw, I forgot to add the link in my last post. It is: http://forums.macrumors.com/showthread.php?t=1480259,

    Post by derbothaus, who seems to know his way around Terminal pretty well.

    Good luck!

  • 196. Re: Mountain Lion disconnect from Ethernet in sleep mode
    NeridaSydney Level 1 Level 1 (0 points)

    I have found a solution that works for me: choose "Sleep" when I walk away from the computer, and the ethernet connection will come up normally when I wake the computer up.

     

    Alternatively, if I forget to do this, and come back to a lost connection, I can choose "Sleep" and then wake the computer again, and all is well.  Certainly better than restarting, and I'm a happier camper now.

  • 197. Re: Mountain Lion disconnect from Ethernet in sleep mode
    murrayE Level 1 Level 1 (40 points)

    NeridaSydney wrote:

     

    I have found a solution that works for me: choose "Sleep" when I walk away from the computer, and the ethernet connection will come up normally when I wake the computer up....

    In my experience, that does not always work! Over a period of months, the only solution I've found that works consistently on my hard-wired iMac is that, after I wake it up, execute the following commands in Terminal:

       

       sudo ifconfig en0 down

       sudo sleep 10

       sudo ifconfig en0 up

  • 198. Re: Mountain Lion disconnect from Ethernet in sleep mode
    hexdiy Level 1 Level 1 (60 points)

    For users experiencing the same problems over WiFi, it might be interesting to substitute "en0" by "en1":

    sudo ifconfig en1 down

    sudo sleep 10

    sudo ifconfig en1 up

    Thank you, murrayE!

  • 199. Re: Mountain Lion disconnect from Ethernet in sleep mode
    hexdiy Level 1 Level 1 (60 points)

    And, BTW, coulnd't somebody make a daemon out of both Terminal command sets ( en0 + en1)  that reacts at wakeup? I myself am not experienced enough, but surely somebody out here is?

  • 200. Re: Mountain Lion disconnect from Ethernet in sleep mode
    margate Level 1 Level 1 (0 points)

    Only a few times I lost my network since August where I did the SMC resets etc.

     

    Anyway, Thanks to Bernhard de Baehr it is fairly easy to make a function to Down/Up interfaces using sleepwatcher 2.2 which you can download from http://www.bernhard-baehr.de/

     

    I choosed system wide, so my commands are for system wide

     

    1. Download SleepWatcher_2.2 to Desktop

    2. Dbl. click to unzip, a SleepWatcher 2.2 folder is created in desktop

    3. Open ReadMe.rtf and follow "Installation for new SleepWatcher users" using Terminal Window

     

    Comments on steps in ReadMe.rtf:

    Step 3:     

     

    With vi or your favorite editor create .sleep and .wakeup scripts with actions in your home folder /Users/<username>

     

    For this problem I only use  .wakeup with the follwing content, omit ---------------------------------- lines

     

    ----------------------------------

    #!/bin/sh

    #Used by sleepwatcher to do stuff on wakeup

    #Called from /etc/rc.wakeup

    #Edit GW,  LIF and WIF as needed.

     

    #Gateway to test

    GW=192.168.1.1

    #LAN IP and Interface information

    LIF=en0

    #WIFI IP and Interface information

    #WIF=en1

     

    #Down and Up LAN interface if GW is unavailable through $LIF

    if [ "$LIF" != "" ] && [ $(ping -b $LIF -t 1 -c 4 $GW 2>&1|grep -c "100.0% packet loss") != 0 ]; then

            ifconfig $LIF down

            sleep 1

            ifconfig $LIF up

            logger "wakeup: $LIF re-cycled"

    fi

     

    #Down and Up WIFI interface if GW is unavailable through $WIF

    if [ "$WIF" != "" ] && [ $(ping -b $WIF -t 1 -c 4 $GW 2>&1|grep -c "100.0% packet

    loss") != 0 ]; then

            ifconfig $WIF down

            sleep 1

            ifconfig $WIF up

            logger "wakeup: $WIF re-cycled"

    fi

    #Other stuff to follow

    -----------------------------------

     

    Change permission

    chmod 750 .sleep

    chmod 750 .wakeup

     

    Step 5: I skipped this because file copied in Step 6 and permanent load is done with -w in Step 7

    Step 6:

     

    sudo cp Desktop/sleepwatcher_2.2/config/de.bernhard-baehr.sleepwatcher-20compatibility. plist /Library/LaunchDaemons/

    chmod 644 /Library/LaunchDaemons/de.bernhard-baehr.sleepwatcher-20compatibility.plist

    sudo cp Desktop/sleepwatcher_2.2/config/rc.* /etc

    sudo chmod 750 /etc/rc.sleep

    sudo chmod 750 /etc/rc.wakeup

     

    There is a extented attribute "com.apple.quarantine" on the config files, remove with

     

    sudo xattr -d com.apple.quarantine /Library/LaunchDaemons/de.bernhard-baehr.sleepwatcher-20compatibility.plist

    sudo xattr -d com.apple.quarantine /etc/rc.wakeup

    sudo xattr -d com.apple.quarantine /etc/rc.sleep

     

    Step 7:

     

    sudo launchctl load -w /Library/LaunchDaemons/de.bernhard-baehr.sleepwatcher-20compatibility.plist                              

     

    4.Test

     

    reboot

    from Terminal do

     

    sudo launchctl list | grep sleepwatcher and check that "de.bernhard-baehr.sleepwatcher" is running

     

    tail -f /var/log/system.log | grep wakeup

     

    sleep/wake a few times and watch for wakeup entries in system.log

     

    if ping succeeds in .wakeup there are no wakeup entries

     

     

    All set

  • 201. Re: Mountain Lion disconnect from Ethernet in sleep mode
    Taskil Level 1 Level 1 (0 points)

    I have same email problem but only using an iMac with with wifi on a Sky modem/router. I have tried it with other modem/routers like BT and it works fine. Sometimes restarting mail works, sometimes resetting the modem and sometimes restarting the iMac but it definitely seems to be only with the Sky router. Not tried a wired ethernet connection as presumed it was an incompatability between router and iMac.

  • 203. Re: Mountain Lion disconnect from Ethernet in sleep mode
    Allex2501 Level 1 Level 1 (0 points)

    FIxed my problem!

     

    After years the problem was solved somply!

     

    Go to System preferences

    Go to Ethernet
    Go to Advance
    Go to Hardware

     

    The just make the changes like in the pictures below

     

    it work for me Screen Shot 2013-02-02 at 8.18.21 PM.png

  • 204. Re: Mountain Lion disconnect from Ethernet in sleep mode
    Ronaldo1965 Level 1 Level 1 (0 points)

    Hi,

    Sorry to say it does not help. Actually it was even more difficult to come out the disconnected state.

    Officially you can only do this if you are are able to set your switchport to 1000Fdx instead of autonegotiate. And then it even might work. Because the problem looks like a negotitiation problem. But most switches can't be managed. So then it won't fix anything.

  • 205. Re: Mountain Lion disconnect from Ethernet in sleep mode
    Ronaldo1965 Level 1 Level 1 (0 points)

    This looks very good. I am going to try this too.

  • 206. Re: Mountain Lion disconnect from Ethernet in sleep mode
    Allex2501 Level 1 Level 1 (0 points)

    So did u try?

    Let me know what happen after u tried

  • 207. Re: Mountain Lion disconnect from Ethernet in sleep mode
    BigBar Level 1 Level 1 (0 points)

    My Mountain Lion Mail also refuses to connect to accounts after waking from sleep. I have to quit and restart Mail to get the accounts to reconnect. One interesting twist to this is that one time I let the machine go to sleep while Windows 7 on Parallels had an open window. In this case, Mail did not lose connection to the accounts. This might be a clue. VERY frustrating!

  • 208. Re: Mountain Lion disconnect from Ethernet in sleep mode
    KID MAYHEM Level 1 Level 1 (0 points)

    My work around is keeping a shortcut to Network Diagnostics on my Dock Menu. To do this, follow the instruction Here. Running this Utility gets my Wifi connection back after resuming from Sleep Mode.

  • 209. Re: Mountain Lion disconnect from Ethernet in sleep mode
    BigBar Level 1 Level 1 (0 points)

    My problem was that the Mail accounts would disconnect during Sleep. I had to quit and researt Mail to get my mail flowing again. After I upgraded to OS10.8.2, about a week ago, the problem went away and hasn't returned.

    Mac Mini 2010.