Graphical glitch on boot has me worried

Discussion in 'macOS' started by juliancs, Apr 17, 2011.

  1. juliancs macrumors 6502

    Aug 24, 2006
    Hi folks, when moving from the grey :apple: boot screen to the login window, there is normally some blue first. At the moment I get a half blue half black screen,split by a jagged diagonal line. It then flashes and goes to my login.
    I'm a little worried this could be something more serious..PRAM/Permissions/Disk Repair done. Computer works fine and I can game for hours with no artifacts so don't think it's the GPU that is fried.

    Mac Pro Quad 2.9, 10.6, 6GB with a 285...
  2. MacForScience macrumors 6502


    Sep 7, 2010
    No other issues don't worry about it. Its 10.6 being glitchy.

  3. aussie_geek macrumors 65816


    Apr 19, 2004
    Sydney Australia

    Can u take a photo of it?

    does it look like this?

    if so, i reinstalled osx and it went away. It came back a month or two ago and I narrowed it down to "Air Display" - an iPad app to extend your monitor. Once that was deleted, the iMac was fine.

    Here is a thread I made about it a while back.


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