Allex2501

Q: Ethernet cable Unplugged (which isn't)

My Imac is just connect wireless. I am trying to connect with the ethernet cable to get more speed, but my ethernet cable it is connected but it showing that is Unplugged.

 

I have an airport as my wirelless device.

 

Any help

 

Allex

iMac, Mac OS X (10.7.2)

Posted on Apr 16, 2012 9:59 AM

Close

Q: Ethernet cable Unplugged (which isn't)

  • All replies
  • Helpful answers

Previous Page 2 of 3 last Next
  • by egejo,

    egejo egejo Jan 13, 2013 10:11 PM in response to bill33
    Level 1 (0 points)
    Jan 13, 2013 10:11 PM in response to bill33

    Not for all of us I just updated to Mountain my imac 27" and got these issue even on 10.8.2 wich auto updated after the new OSX install. Please Apple take these into consideration again.

  • by Allex2501,Solvedanswer

    Allex2501 Allex2501 Feb 2, 2013 2:33 PM in response to egejo
    Level 1 (0 points)
    Feb 2, 2013 2:33 PM in response to egejo

    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 belowScreen Shot 2013-02-02 at 8.18.21 PM.png

  • by Grant Bennet-Alder,

    Grant Bennet-Alder Grant Bennet-Alder Feb 2, 2013 3:27 PM in response to Allex2501
    Level 9 (60,904 points)
    Desktops
    Feb 2, 2013 3:27 PM in response to Allex2501

    What was set differently before?

  • by Allex2501,

    Allex2501 Allex2501 Feb 2, 2013 10:53 PM in response to Grant Bennet-Alder
    Level 1 (0 points)
    Feb 2, 2013 10:53 PM in response to Grant Bennet-Alder

    It was different

    Basic was blank

     

    After I put this configuration it worked righ way.

  • by bill33,

    bill33 bill33 Feb 20, 2013 11:43 AM in response to Allex2501
    Level 1 (40 points)
    Feb 20, 2013 11:43 AM in response to Allex2501

    I have the above same settings and I stll get Status: Cable unplugged.....

     

    its like a ghost...keeps coming back...

  • by duplesa,

    duplesa duplesa Feb 7, 2014 6:34 AM in response to bill33
    Level 1 (0 points)
    Feb 7, 2014 6:34 AM in response to bill33

    I have the same issue!  Bought new cables, modem, did SMC reset as well as PRAM and nothing!  Screen Shot 2014-02-07 at 4.29.37 PM.png

  • by Shaunsail,

    Shaunsail Shaunsail Jan 9, 2015 1:15 AM in response to Allex2501
    Level 1 (0 points)
    Jan 9, 2015 1:15 AM in response to Allex2501

    Update:

    I fixed the speed of both Mac and PC to 100Mbps full -  Reset AE, power cycle Switch, then added mac - speed 75Mbps. Added PC, both at 75Mbps. All is wel!. PC goes to sleep, wakes up back to 9Mbps on both.  Both show link speed of 100 (fixed).

    Question: how to a find the link speed of the Airport Extreme?  Switch only has green LED so no clues there.

     

    Additional:

    I also had a problem with both Mac and PC (different time) where they said cable disconnected. PC would connect until operating system up, then switch LED would go off and PC would report cable unplugged. Simular for Mac.  I have seen other post with same problem.

    The fix is to power off all systems and start again - all the other fixes suggest, change config etc  in effect restart the router. I changed switches and cables with no effect.

    Hence I think that the issue is the auto negotiation of the AE and re-start all system restart/refresh the auto negotiation. fixing the end client help.

     

    Conclusion:

    it used to work ok, so what has changed. AE firmware?

     

    Solution for me:

    Use WiFI may only give 40MBps but it is better than 9Mbps !!!

  • by Hotchili,

    Hotchili Hotchili Feb 27, 2016 12:27 PM in response to duplesa
    Level 1 (4 points)
    Feb 27, 2016 12:27 PM in response to duplesa

    I had this same issue rear it's head today, on 2 iMacs at the same time. While it says the cable is unplugged, the lights on both a router and a hub light up when the cables are plugged in to either machine. A third iMac on the same network is not suffering this issue.

    SMC and PRAM resets did nothing.

    I tried going into System Preferences/Network, then selecting ethernet and deleting it. When I tried to add it back, it was not a option. Ethernet was gone from the interface options. Somehow, overnight, 2 of 3 iMacs did this with no updates or other changes.

    My interim solution is to use USB -> ethernet dongles, but I'd sure like to figure out what is going on here. All 3 iMacs are running 10.11.2, one is a brand new iMac (that one still works), the other 2 are 2 and 4 years old respectively.

    If anyone has any suggestions, I'm open to hear them,

    thanks.

  • by FurryOne,

    FurryOne FurryOne Feb 27, 2016 12:51 PM in response to Hotchili
    Level 1 (9 points)
    Feb 27, 2016 12:51 PM in response to Hotchili

    Just reboot, hold down the Comand & R keys, do a First Aid (as a safety measure) from the Disk Utility menu, then do a Reinstall OS (of course you have to be online somehow to do this. (My WiFi worked, so I used that).  Once you've reinstalled the OS, your Ethernet port should work again.  It did for me!  (That's the quick way to do it - from Apple Tech Support)

  • by KamsGram,

    KamsGram KamsGram Feb 27, 2016 1:05 PM in response to Hotchili
    Level 1 (8 points)
    Desktops
    Feb 27, 2016 1:05 PM in response to Hotchili

    Hi, I'm having a similar problem. All of a sudden my iMac won't connect to the internet through the Ethernet setting, tried lots of different things to figure out why.  I opened Network utilities and discovered I'm missing the ethernet card and setting. I'm able to connect to the Wi Fi, luckily. Screen Shot 2016-02-27 at 3.49.33 PM.png

    Screen Shot 2016-02-27 at 3.57.12 PM.png

    Tried doing a hardware test but couldn't. Finally found a message under Software....

    Disabled Software...

    com.apple.iokit.AppleBCM5701Ethernet:

    Version 10.1.12  Reason Kext Exclude                  List Date Disable 9/16/15, 8:25 PM


    com.apple.iokit.AppleYukon2:

    Version 3.2.3     Reason Kext Exclude                   List Date Disable 9/16/15, 8:25 PM

    This is what I am running for a computer Screen Shot 2016-02-27 at 4.02.16 PM.png

    Because of the date I'm not sure that this is the reason for my ethernet problem.

    Does anyone know how I can re-install my ethernet card. Any help would be greatly appreciated.

    Thank you for any consideration to this problem.


    com.ap

     

    Vers

      Version:

  • by FurryOne,

    FurryOne FurryOne Feb 27, 2016 1:09 PM in response to KamsGram
    Level 1 (9 points)
    Feb 27, 2016 1:09 PM in response to KamsGram

    First, your Ethernet card will reappear when you shutdown and turn it back on again, so leave your WiFi connected, then...

     

     

    Just reboot, hold down the Comand & R keys, do a First Aid (as a safety measure) from the Disk Utility menu, then do a Reinstall OS (of course you have to be online somehow to do this. My WiFi worked, so I used that).  Once you've reinstalled the OS, your Ethernet port should work again.  It did for me!  (That's the quick way to do it - from Apple Tech Support)

  • by g.biggs,

    g.biggs g.biggs Feb 27, 2016 2:44 PM in response to Allex2501
    Level 1 (0 points)
    Feb 27, 2016 2:44 PM in response to Allex2501

    I don't know you have hear the news...

     

    http://www.macrumors.com/2016/02/27/ethernet-not-working-imac-macbook-pro/

     

    might the source of the issue.

  • by Quique6679,

    Quique6679 Quique6679 Feb 27, 2016 2:54 PM in response to KamsGram
    Level 1 (0 points)
    Feb 27, 2016 2:54 PM in response to KamsGram

    First of all, sorry for my english, it is not my first language.

    Today I turned on my Mac mini (latest version with latest version of el capitán) and found that ethernet connection was not working.

    Trying to find a solution online, I have found this post.

    I was worried that it was a hardware problem but it is really weird that this problem appears today to many people so I think it must be software related.

    I have done SMC RESET without any luck. I can not do PRAM RESET because I do not have a keyboard, I use my iPhone to control the Mac mini.

    I can not use the solution given here of configure manually the ethernet port to 100 because I deleted the service and when I was going to add it again, it has disappeared.

    How do I reinstalll de OSX? Will I lose all my personal data in the process?

    if anyone find a solution to this please let me know.

    Thank you.

    Regards.

  • by Quique6679,

    Quique6679 Quique6679 Feb 27, 2016 3:19 PM in response to g.biggs
    Level 1 (0 points)
    Feb 27, 2016 3:19 PM in response to g.biggs

    Thank you Biggs!

    At the end of that post of macrumors is the solution.

    My ethernet port is working again.

    Thank you again!

  • by Roger Wilmut1,

    Roger Wilmut1 Roger Wilmut1 Feb 27, 2016 3:21 PM in response to Quique6679
    Level 9 (78,198 points)
    iTunes
    Feb 27, 2016 3:21 PM in response to Quique6679

    People who today are finding their ethernet not working are not helping themselves by trying to get an answer from this thread, which was started years ago. Tacking onto an ancient thread is a quick way of gaining out-of-date information.

     

    The problem lies with a 'silent' software update which affects only Macs using the Broadcom BCM5701 driver, which the update inadvertently renders inactive. The various 'solutions' posted above prior to today will not work; a reinstall is necessary, either of the System or (possibly) the updated version of the update which is causing the trouble.. There is a discussion and proposed solutions in the more recent posts in this thread:

     

    Ethernet Not working

Previous Page 2 of 3 last Next