black bars at boot

Discussion in 'MacBook Pro' started by mentaluproar, May 31, 2014.

  1. mentaluproar macrumors 68000

    mentaluproar

    Joined:
    May 25, 2010
    Location:
    Ohio, USA
    #1
    Sometimes I get these black bars at boot before I get to the login screen on my rMBP running Mavericks. This time, I booted into single-user mode to force a trim on the SSD and after that it did this. This has happened after booting from windows too. Has anybody else see this behavior before?
     
  2. Charadis macrumors 6502a

    Joined:
    Jul 3, 2010
    #2
    I don't really know why it would do that, but mine booted with black bars like 30 minutes ago. I had shut down my rMBP while it was still connected to a Sony Bravia though, which had to view with bars due, so I assume it was still "thinking" in that state when I had rebooted. I rebooted again, and the bars did not show up this time. Sent from my MacBook Pro.
     
  3. mentaluproar thread starter macrumors 68000

    mentaluproar

    Joined:
    May 25, 2010
    Location:
    Ohio, USA
    #3
    Last time this happened, it wouldn't go away unless I connected the tv to it via HDMI, booted, disconnected the cable and reboot.
     

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