Ethernet not working on Yosemite

Discussion in 'Mac Basics and Help' started by Olbert000, Mar 6, 2015.

  1. Olbert000 macrumors newbie

    Feb 7, 2011
    My ethernet cable internet has stopped working.

    I normally connect my 2013 MBP to the internet via my home wifi network, however I often like faster internet for downloads, games, etc and connect using an ethernet cable and a thunderbolt adapter. It has stopped working. Normally I have to turn off the wifi to force it to use the ethernet (not sure why!?) but that makes it work. This time that doesn't work and diagnostic/assistant doesn't help either.

    The wifi works on the same network. The ethernet cable and port works on a different laptop (I haven't checked the thunderbolt adaptor because it's not a mac).

    Why would it stop working (I haven't changed anything)? How can I fix it?
  2. Fishrrman macrumors G5


    Feb 20, 2009
    Simple question (perhaps you've already done it), but...

    ... have you tried rebooting the MacBook?
  3. Olbert000 thread starter macrumors newbie

    Feb 7, 2011
    Yes - I've tried rebooting it.

    Interestingly the last time it worked was when I was on Bootcamped Windows 7. Could that have messed with any settings?
  4. blueroom macrumors 603


    Feb 15, 2009
    Toronto, Canada
    Are you using the Apple GigE Thunderbolt adapter or a 3rd party?
  5. Olbert000 thread starter macrumors newbie

    Feb 7, 2011
    Apple one.

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