Thunderbolt Display going black with El Capitan

Discussion in 'OS X El Capitan (10.11)' started by DavePidgeon, Oct 5, 2015.

  1. DavePidgeon macrumors newbie


    Oct 5, 2015
    I have a 27' Thunderbolt display connected to a 12' Macbook Pro (Late 2011). This display was working perfectly before I downloaded El Capitan and now the display goes black after a few minutes of use. Does anyone know why this is happening? I have read threads about this happening a lot with orders OS's but there isn't and fixes.

  2. DogCatMSMac macrumors member


    Nov 21, 2014
    I got my second screen to turn on again by changing screen savers. I'm seeing a problem with the second screen not wanting to turn on after Energy Saver turns off the screens.
  3. DavePidgeon thread starter macrumors newbie


    Oct 5, 2015
    It seems only to happen with the Thunderbolt display. I have my laptop connected to my TV right now with no issues. I should've pointed out that the display goes black and turns back on. Does it every few minutes.
  4. smithrh macrumors 68020


    Feb 28, 2009
    Oddly enough, it may be the cable between the display and your mac. I had a similar issue after a point release in Yosemite, so I figured it was a software issue. I eventually read somewhere that the integrated thunderbolt/magsafe cable can be problematic, and to try a different thunderbolt cable.

    No issues since I've done that.

    YMMV, but worth a shot.
  5. MaxwellH macrumors newbie

    Oct 19, 2015
    Did you ever find a fix for this? Mine is weird: ever since "upgrading" to el capitan my thunderbolt display is just . . . temperamental. It'll work in the mornings, but not in the afternoons. Weird. Frustrating.
  6. nm12b3 Suspended

    Nov 11, 2015
    It's not only you.. I have a same issue now ;(
    If you solve this problem, I hope you post the solution here.
  7. gol macrumors newbie


    Jun 7, 2017
    --- Post Merged, Jun 7, 2017 ---
    Try this.

    Unplug the power for 10 second to your display then turn it back on.

    Then go to System Preferences, Energy Saver, choose the “Turn Display off after:” to “Never”.

    It is not the power problem or the cable problem of the firmware issue!!!

    Good Luck

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