Weird '18 mini problem

Discussion in 'Mac mini' started by Martyimac, Jun 2, 2019.

  1. Martyimac macrumors 68000

    Martyimac

    Joined:
    Aug 19, 2009
    Location:
    S. AZ.
    #1
    Decided to install the 10.14.5 combo updater to my mini. Numerous times the computer/monitor would go into sleep mode and the install would stop. Tried to cmd-R restart, no go. Cmd-option-R startup would work and disk utility first aid said no problems.
    To make a long story shorter I found that if I pulled the video cable out of one USB-C port and put in another one would bring the monitor out of sleep mode and the install would continue.
    I was able to complete the reinstall of the combo updater but this has me scratching my head. Any thoughts?
    OBTW, if it matters the monitor is a Dell P2715Q
     
  2. Stephen.R macrumors 65816

    Stephen.R

    Joined:
    Nov 2, 2018
    Location:
    Thailand
    #2
    Are you sure the install stops when the display goes to sleep?
     
  3. Martyimac thread starter macrumors 68000

    Martyimac

    Joined:
    Aug 19, 2009
    Location:
    S. AZ.
    #3
    Yes, waited 10 minutes and no display, no monitor flicker, nothing. Display went into "sleep mode".
     
  4. Duncan68 macrumors regular

    Duncan68

    Joined:
    Sep 22, 2018
    #4
    I had an issue where the monitor went blank after updating to 10.14.5. It seems to have worked itself out after a few reboots.

    Monitor is an Acer 25".
     
  5. Martyimac thread starter macrumors 68000

    Martyimac

    Joined:
    Aug 19, 2009
    Location:
    S. AZ.
    #5
    I was hoping that would happen but after waiting at least 30 minutes on one of my numerous tries, monitor remained in "sleep mode".
     
  6. Duncan68 macrumors regular

    Duncan68

    Joined:
    Sep 22, 2018
    #6
    Even now, when starting up my mini from a cold boot, during the macOS load process the monitor will go blank for a few seconds. Thankfully it's always come back up.

    There is something weird with this update and monitors.
     
  7. Stephen.R macrumors 65816

    Stephen.R

    Joined:
    Nov 2, 2018
    Location:
    Thailand
    #7
    I would wait more than 10 minutes personally. I’ve seen some combo updates take 30+ minutes to install (crazy I know)
     
  8. Martyimac thread starter macrumors 68000

    Martyimac

    Joined:
    Aug 19, 2009
    Location:
    S. AZ.
    #8
    As have I, but the amount of times the monitor goes black is measured in seconds, and that is usually during a restart, not always but usually, and I have never had a monitor go into sleep mode during an install of ANY OS update over the last 8 years.
    OBTW, once I figured out the remove then reinsert the video cable, my troubles were over. If the monitor went into sleep mode, I just shifted to a different port on the mini.
     
  9. doboy macrumors 68020

    Joined:
    Jul 6, 2007
    #9
    Had the same problem yesterday with display failing to show status/repair screen through HDMI. Luckily, I tried the USB-C connection and it worked fine through Mojave re-installation.
     
  10. oppastopa macrumors newbie

    Joined:
    May 25, 2019
    #10
    Yes, my update process went oddly. Screen went black and finally went to sleep. The update finished but there was no indication it finished and I had to wake my computer, thinking it was still updating.
     

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9 June 2, 2019