uribejm

Q: Ethernet port in Thunderbolt Display connecting intermittently

Hello,

 

I have a 1.8 GHz Core i7 Macbook Air connected to a thunderbolt display.

 

Some days the displays Ethernet port works and some other days (now the majority) the Ethernet Display shows no connection (red dot, s if the cable was not plugged in). I have tried different cables and different connections (I have a 100 Mbps port non powered and a 1000 Mbps port non powered) all with the same result. I know the ports are working because I have tried different computers and peripherals and they all work.

 

Has anybody seen this issue?

 

Can it be fixed?

 

I recently applied the latest firmware update from apple.

 

 

Regards,

 

 

Jaime.

MacBook Air, Mac OS X (10.7.2), Core i7

Posted on Nov 23, 2011 7:41 AM

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Q: Ethernet port in Thunderbolt Display connecting intermittently

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  • by GSVNotInventedHere,

    GSVNotInventedHere GSVNotInventedHere Aug 1, 2013 2:04 AM in response to Kriya Yogi
    Level 1 (0 points)
    Aug 1, 2013 2:04 AM in response to Kriya Yogi

    I had this issue last month.

    Kriya Yogi's fix worked for me.

    Thanks awfully old bean.

  • by cchamberlain,

    cchamberlain cchamberlain Aug 1, 2013 8:59 AM in response to uribejm
    Level 1 (0 points)
    Aug 1, 2013 8:59 AM in response to uribejm

    I am now experiencing what most of you have. I am running 2.4 GHz MBP on Moutain Lion 10.8.4 connected to a TBD. I have had no problems running my peripherials out of the USB ports until today. I've tried a multitude of fixes listed on the threads from deleting preferences from the library to changing up the the individual peripherials using the ports to no avail. I'm feeling this might be a hardware problem and about to take it back to Apple to have it fixed.

     

    Are there any real solutions that have worked for most disgruntled owners using the TBD in the same way?

     

    How many individuals have just returend their monitors as a last resort?

  • by Mark TTU,

    Mark TTU Mark TTU Aug 1, 2013 9:12 AM in response to cchamberlain
    Level 1 (0 points)
    Aug 1, 2013 9:12 AM in response to cchamberlain

    I still live with the failings of the TBD. I upgraded from a 13" MBA to a 15" MBPR a few months ago and still randomly have issues with the display part working, but nothing else: no ethernet, no usb, no firewire. When that happens I have to close out all my programs, and try to shutdown my MBPR. Typically I can't get my Mac to shutdown so I just hold the power button until its off and then reboot while connected to the TBD.

     

    Overall I'd say 4 out of 5 times everything works as it should and while I'm not happy about the 20% of the time it doesn't I've given up on Apple actually caring and just learned to live with it. Seems if you're not talking about an iOS device Apple's give a **** is seriously broken these days.

  • by woodja8,

    woodja8 woodja8 Oct 1, 2013 10:30 AM in response to Kriya Yogi
    Level 1 (0 points)
    Oct 1, 2013 10:30 AM in response to Kriya Yogi

    This is the only thing actually worked for me.  Thanks Kriya!

  • by degger,

    degger degger Oct 20, 2013 6:02 AM in response to uribejm
    Level 1 (0 points)
    Oct 20, 2013 6:02 AM in response to uribejm

    Actually I just also had the problem with the thunderbolt display and ethernet simply not connecting anymore, seemingly due to not having a valid MAC address anymore (as can be determined by the empty MAC address field under "Advanced..." in the Hardware tab). Fixed it by selecting "Display Ethernet", hitting the "-" button to remove it, followed by Apply, reconnecting the display, hitting the "+" button and readding "Display Ethernet". Works now again for me.

  • by jak352,

    jak352 jak352 Dec 15, 2013 5:35 AM in response to degger
    Level 1 (0 points)
    Dec 15, 2013 5:35 AM in response to degger

    Thanks degger, that fixed the problem for me using my new Macbook Pro Retina on Mavericks. I want to connect to the network with my Thunderbolt to Ethernet adaptor and I now have the MAC address displayed in the Hardware tab (it was missing before).

  • by tbirdvet,

    tbirdvet tbirdvet Dec 15, 2013 6:57 AM in response to GSVNotInventedHere
    Level 4 (3,018 points)
    Mac OS X
    Dec 15, 2013 6:57 AM in response to GSVNotInventedHere

    All TB ports work with my 2012 Mini but the USB2 ports run slower with USB2 hardware than USB ports on the Mini but this is a known issue.

  • by NStrecker,

    NStrecker NStrecker Jun 10, 2014 7:29 AM in response to Thosel
    Level 1 (0 points)
    Jun 10, 2014 7:29 AM in response to Thosel

    Two years later, this post just solved my same issue- Thanks!

  • by TheMatador,

    TheMatador TheMatador Sep 8, 2014 8:28 AM in response to Kriya Yogi
    Level 1 (0 points)
    Sep 8, 2014 8:28 AM in response to Kriya Yogi

    Workaround:

    I was getting an error that the cable was connected but I didn't have an IP (v4 or 6) address.  If I set the IP address manually (and router, subnet mask, DNS server etc.) then it works fine.

     

    This suggests that it's the DHCP packets that aren't getting through.  Once the IP address is there it works fine.

     

    This suggests that it's nothing to do with the cable.  Also, when I connect directly to the Thunderbolt adapter directly on the Mac it's fine, so it's not an issue with the MBP either.

  • by eduasand,

    eduasand eduasand Oct 4, 2014 5:26 PM in response to uribejm
    Level 1 (0 points)
    Oct 4, 2014 5:26 PM in response to uribejm

    I had the same problem, so i tried my thunderbolt ethernet adapter. I plugged the thunderbolt ethernet adapter on my display and connect it to a ethernet cable and it is working fine. I don't know why the ethernet port on the display doesn't work, but this trick work for now until apple fines a solution.

  • by dmltv,

    dmltv dmltv Oct 13, 2014 2:45 PM in response to Kriya Yogi
    Level 1 (8 points)
    Mac OS X
    Oct 13, 2014 2:45 PM in response to Kriya Yogi

    This fixed my problem too, I was having the same issue and was worrying that I would have to do a clean install, the issue didn't persist on a freshly installed copy of OS X. Luckily Kriya Yogi's solution saved me the trouble for now

  • by PatrickL,

    PatrickL PatrickL May 8, 2015 9:08 AM in response to uribejm
    Level 1 (59 points)
    Mac OS X
    May 8, 2015 9:08 AM in response to uribejm

    I am having this issue as well. I enjoyed have a free TB port on my MBPr 15" (use my TB display as a hub), but now have to occupy it with a TB-to-Ethernet adapter, which works just fine.

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