Beware: 10.11.2, Mac Pro 2013 will not wake up 4k Displays

Discussion in 'Mac Pro' started by Processor, Dec 9, 2015.

  1. Processor macrumors member

    Joined:
    Feb 10, 2012
    Location:
    Hamilton, New Zealand
    #1
    I have installed 10.11.2 today and found the Mac Pro will not wake up the 4k displays connected to thunderbolt ports. I tried many kinds of 4k displays including u28e590d, u24e590d, p2716q etc, but none of them would wake up after sleep. the only resolution is to unplug and replug the thunderbolt (display port) cable to a different thunderbolt port.
    those displays all work perfectly with 10.11 and 10.11.1.

    Steps to Reproduce:
    1: have a Mac Pro 2013, any configurations and install 10.11.2
    2: plug a 4k display like u28e590d to thunderbolt port using mini-displayport cable.
    3: let the Mac Pro go sleep
    4: when press a key or click the mouse, the Mac Pro will wake up but the 4k display will not wake up.

    anyone is experiencing the same problem?
     
  2. keysofanxiety macrumors 604

    keysofanxiety

    Joined:
    Nov 23, 2011
    #2
    Does the issue persist after running a PRAM reset (hold Cmd, Alt, P, R on startup until you hear the Apple boot chime 3 times, then let go)?
     
  3. Processor thread starter macrumors member

    Joined:
    Feb 10, 2012
    Location:
    Hamilton, New Zealand
    #3
    Yes, have reset pram and smc several times but no luck
     
  4. keysofanxiety macrumors 604

    keysofanxiety

    Joined:
    Nov 23, 2011
    #4
    Hmm, definitely confirms it's software then. Not sure what else to try beyond volume verification or restore TM backup from earlier OS iteration. I guess it's just a case of submitting a bug report and possibly turning sleep mode off for the time being.

    Hopefully a few other posters on the same OS/nMP will be able to confirm if it happens for them as well.
     
  5. tomvos macrumors 6502

    tomvos

    Joined:
    Jul 7, 2005
    Location:
    In the Nexus.
    #5
    Some years ago there was the curious issue that the MacMini did not awake the display when the Mac was awoken via a key pressed on the keyboard. However by awaking the Mac with the rear power button, the display did wake up just fine.

    It's a little bit far stretched, but try to wake the MacPro with the rear power button instead of the keyboard/mouse. Perhaps this makes a difference?
     
  6. Processor thread starter macrumors member

    Joined:
    Feb 10, 2012
    Location:
    Hamilton, New Zealand
    #6
    Thank you for the suggestion , I have tried it but didn't work XD
     
  7. sirisy macrumors newbie

    Joined:
    Feb 13, 2015
    Location:
    Brazil
    #7
    I have 3 dell up2414q that sometimes have trouble waking up (one wakes up, others not ...) with 11.10.2, so far at least, these problems did not occur anymore. Among the latest versions of osx, the 11.10.1 was the worst for me (regarding this issue)
     
  8. pat500000 macrumors 604

    pat500000

    Joined:
    Jun 3, 2015
    #8
    :( Thanks for notice! IT will be helpful for those who are about to install it.
     
  9. pat500000 macrumors 604

    pat500000

    Joined:
    Jun 3, 2015
    #9
    So your mac pro went to COMA state, huh? Can't even go to recovery boot and reinstall, right?
     
  10. Processor thread starter macrumors member

    Joined:
    Feb 10, 2012
    Location:
    Hamilton, New Zealand
    #10
    Thank you very much for your reply.
    I guess the Mac Pro works, but there is no video output, the screen is black, I can't do anything XD.

    it seems there are many people with Mac Pro are experiencing the same problem:
    https://discussions.apple.com/message/29441872?ac_cid=op123456#29441872
     
  11. pat500000 macrumors 604

    pat500000

    Joined:
    Jun 3, 2015
    #11
  12. thefredelement macrumors 65816

    thefredelement

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    Apr 10, 2012
    Location:
    New York
  13. kfscoll macrumors 65816

    kfscoll

    Joined:
    Nov 3, 2009
    #13
    Interesting. I submitted a bug report for the last two beta versions of 10.11.2 because they wouldn't wake up the Samsung S34E790C (34" 3440x1440 ultra wide monitor) attached to my nMP. Apple responded and asked me to provide more info, which I did, and I haven't run into the issue - yet - with the final 10.11.2 build. However, it was an intermittent issue, so it's possible it could show up again.
     
  14. Macinsquatch macrumors member

    Joined:
    Mar 28, 2015
    #14
    So far so good here. I have 3 Dell 4k monitors hooked up to my nMP. Wasn't expecting all to be running at 60hz at full resolution. Still waking up after the 10.11.2 update.
     
  15. TimEdmonton macrumors newbie

    Joined:
    Dec 10, 2015
    Location:
    Edmonton
    #15
    I have a nMacpro 8c/64/6gb Graphics and two original Apple 30 inch Cinema displays. That always worked using DVI on my old Mac Pro but when I switched to the mini plug on the old Mac Pro and now the new Mac Pro one or other of the displays intermittently doesn't wake up and I have to pull the plug and replace and this fixes it. I assumed it was a problem with the two Kanex dual link DVI convertors, but I have tried the Apple versions and they are worse and a third party version from Amazon which was dreadful. Just wondering if it is a comms error in the convertor plug?

    Tim
     
  16. kfscoll macrumors 65816

    kfscoll

    Joined:
    Nov 3, 2009
    #16
    Yup, I spoke too soon -- it's definitely still screwed up. I'm glad to see I'm not the only one though.
     
  17. jardinager macrumors member

    jardinager

    Joined:
    Apr 24, 2015
    #17
    My nMP running 10.11.2 will not recognize my displays now. I have to restore to .1 tonight. This stinks. There is no reason for a problem like this to be released live. I never install betas on this machine, and 10.11.2 behaves like a beta build.
     
  18. kfscoll macrumors 65816

    kfscoll

    Joined:
    Nov 3, 2009
    #18
    Yup, t's definitely frustrating, especially since Apple knew about the problem at least two builds ago.

    In the meantime, while your computer is powered on, try switching which Thunderbolt ports your monitors are connected to. After they light up, you can tell the OS to never let them go to sleep (if this is a viable option for you) and then turn them off and on manually until a fix is released.
     
  19. jardinager macrumors member

    jardinager

    Joined:
    Apr 24, 2015
    #19
    Switching the ports doesn't seem to help. Forced reboot required. The screen saver also never kicks in under 10.11.2 despite settings manipulation.

    The restore to .1 is almost done.

    Shame, Apple, shame!
     
  20. Demigod Mac macrumors 6502a

    Joined:
    Apr 25, 2008
    #20
    It's like they don't bother testing different configurations anymore.

    Because everyone's Mac Pro setup looks something like this, right Apple?

    [​IMG]
     
  21. Simon R. macrumors 6502

    Joined:
    Sep 25, 2006
    #21
    Not trying to hijack, but anybody knows if this problem exists with nVidia cards on cMP too or is it isolated to nMP?
     
  22. lowendlinux Contributor

    lowendlinux

    Joined:
    Sep 24, 2014
    Location:
    North Country (way upstate NY)
    #22
    That's interesting I'd love to hear what the difference in wake sequence is between the two ways.
     
  23. edanuff macrumors 6502

    Joined:
    Oct 30, 2008
    #23
    I can confirm this is happening on my nMP with two Dell P2415Q 4K monitors attached. The only thing that got it to wake was to unplug and replug the displayport cable for one of the two monitors. Once I did that, both monitors woke up. Very annoyed to discover this.
     
  24. ixxx69 macrumors 6502a

    Joined:
    Jul 31, 2009
    Location:
    United States
    #24
    I have two Dell P2715Q 4K displays and having the same intermittent issues described here that started with 11.2.

    It doesn't happen every time - actually kind of weird because the last two mornings in a row, they woke up without incident, but the last two evenings in a row (upon returning from the office), they wouldn't wake up.

    Unplugging one of them from the TB port and plugging it into a different TB port appears to force them to wakeup.
     
  25. bax2003 macrumors 6502a

    bax2003

    Joined:
    Dec 25, 2011
    Location:
    Belgrade, Serbia
    #25
    Even that does not work properly for lots of peaple.
     

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