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gadget_aussie_man Level 1 (0 points)

I have a new Mac Mini 2011 i7 Quad CPU version.  I have a Thunderbolt 27 inch display.  I have found that the display randomly turns off and won't turn on when I use the keyboard or mouse.  This occurs when I am doing stuff on the machine, it is not a display sleep issue.  The first couple of times I had to use Remote Desktop to reboot the Mac Mini to fix the issue.  The last time it happened I removed the Thunderbolt plug from the Mac Mini and reinstalled it and this fixed the issue.  I have the latest software updates on the Mac Mini and the Thunderbolt Firmware update on the Display.


I am running Lion 10.7.1

  • darkj2k Level 1 (0 points)

    I have the same issue as you after done with Thunderbold Display Firmware Update 1.0. Mac mini 2011 with all latest system, driver and firmware. I think it's the display firmware update 1.0 caused this issue. Do not have this issue before firmware update.

  • Hacir Level 1 (0 points)

    I have the same setup as you with the latest updates and am experiencing the same problem.  I received the unit today and had the issues appear after the firmware update.

  • Takeo from Kyoto Level 1 (0 points)

    I got similar trouble. My MacBook Air was suddenly hung up, Then after few minute Thunderbolt Display became black out.

    After that trouble I could still login my mac via SSH. WidowServer process with new firmware may have problem.

    A setup was changed so that a computer nevert sleep as the tempraly solution. I hope this issue will fix soon.

  • cpickrell Level 2 (260 points)

    I just experienced this while actively using my 2011 MBA with the display. The interesting thing is all peripherals connected continued to work and I could hear sound from the display. A reboot was necessary. I've turend on screen sharing so if it happens again I can test remotely if I can wake the display though system preferences Detect Display. The logs showed nothing.

  • Brendan Min Level 1 (0 points)

    Me, the same issue. Using Mac Mini Server 2011 dell 2311H monitor attached(upgraded RAM up to 8GB and is the only one change from original), finally got a Thunderbolt 27'' display two days ago. Then found 27'' Thunderbolt display would gone randomly even dell is perfectly ok at the same time (using dual display). Everything except 27'' Thun-di. I've been through this 3 times already during this morning. I just 'restart' my server ('this is a SERVER, jees..') and it corrected problem for the time being. No logs, nothing else helpful...


    Waiting firmware upgrade, that's all i can do now... sigh...!

  • gadget_aussie_man Level 1 (0 points)

    Latest is that I am still having the issue.  The good news is that Apple contacted me to ask for further data to assist with analysing the problem.  The difficulty is that it does seem to be random in that I have now seen a pattern emerge as to when it happens, and if I repeat what I was doing when the display went off, then it doesn't reoccur the second time.  I have had it happen when I am using iMovie and this morning when I was recording an audio stream using Sound Studio. 


    Has anyone else seen any sort of pattern to the occurences.

  • Brendan Min Level 1 (0 points)

    Well, i've just patched firmware update for Thunderbolt display from Apple customer support site. I'm sure you've done this already because it's dated 19, Sep. Well, I'll try to find the pattern anyway if the same thing happens again.

    And, for your information, those happened while i was using 'Remote Desktop Connection' from MS-Office, which i set as expanded 'full screen', targeted Thun-di, (I've mentioned i'm using dual display, Dell 2311H and Thun-di above reply).

    Plus, I found some interesting bug for the 'full screen feature' of RDC of MS-Office, which is sometimes got confusing which 'desktop' it should use. when i added one more desktop from 'Mission Control', ran RDC in full screen mode from 'desktop 2', it should just remained on 'desktop 2' when i switched to my original 'desktop 1'. But, when i did switch to 'desktop 1', RDC just switched to 'desktop 1' and remained in 'full screen mode'. I feel strange, 'cause the feature worked fine yesterday, but not today, and the 'Thun-di''s gone randomly.

    Too many clues and multiple bugs appeared at the same time, made me confused, RDC of MS-Office, Lion, and Thun-di(oh, just added patch from Apple, TT)...

    Wait for solution with fingers get crossed, haha...

  • gadget_aussie_man Level 1 (0 points)

    I have got the updated Thunderbolt Display firmware.  In fact I first got the issue after installing the firmware, but as I had only set up the machine with the Thunderbolt Display before updating it I have not got sufficient running time with it prior to the firmware update to know if the issue existed before updating.

  • Brendan Min Level 1 (0 points)

    Well, it's obvious 'this problem' was and is, irrelevant to this firmware patch.

    I got no same turning off problem yet, though.

    Still using dual, RDC of MS.

    Let's see what happens next!

    Good luck 2 U!

  • Dick_from_Roswell Level 1 (0 points)

    I'm seeing the same symptoms with a brand new display.  Second day of use, connected to a MBA 13".  No warning..screen just goes black, like someone pulled the power cord.  MBA screen continues to work.  I hear no fan noise at all nor do I feel moving air.  This has happened twice in the 2 days I 've had the display.  S/N is C02G88HBDJGR, if that means anything.  How do I report this ?

  • AlohaSpirit2 Level 1 (0 points)

    I have the lastest Mac Mini Server:  Hooked up the new Thunderbolt 27 display.  There is no on off switch. 


    On plug in via the new Thunderbolt cable the screen came on.  I ran the firmware updates as advised by Apple. 


    Now, the screen shuts off randomly.  The screen is off right now.


    The screen will not come back on unless I take out the cable and then re-insert. This technique brings the screen back to life.


    Very odd. 


    Any fixes out there? 

  • Hacir Level 1 (0 points)

    There are no fixes at this juncture.  I have the exact configuration you do and have tried 10.7.2 beta and various cable combinations with the same result.  The good news is that Apple is working on identifying the root cause and is doing so aggressively (I've spoken with customer support a couple of times).  I am certain a fix will be out ASAP.

  • AlohaSpirit2 Level 1 (0 points)

    Apple tells me new screen is in order as this is not to occur.  Call support and get new screen...mine went off a second time while I was speaking to tech...would not restart with the cable pull method.... A real hassle. 

  • AlohaSpirit2 Level 1 (0 points)

    Correction would not restart without the cable pull method.... Cable pull restarted monitor...

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