Low resolution Login Screen Yosemite, PRAM reset doesn't work

Discussion in 'OS X Yosemite (10.10)' started by Arvind Muthu, Aug 16, 2015.

  1. Arvind Muthu macrumors newbie

    Aug 16, 2015

    I run my Late-2013 15" Mac Book Pro Retina running OS X Yosemite (10.10.5) in the highest possible resolution ("More Space"). I have recently noticed that the login screen on first boot up is at the default resolution which looks very low resolution compared to the normal desktop. When I login, the screen flickers a couple of times and the screen resolution is set correctly (to "more space"). If I log out the login screen is at high resolution, so the problem is only on the first boot up.

    It would appear that OS X has only recently started doing this as it always booted to a high resolution login screen.

    So, after much googling on this topic, I tried a PRAM reset a few days ago but it didn't solve the problem. Looks like plenty of other people say the same too...

    Are there any known fixes to this and is this a known bug ?

    I tried clean install of OS X Yosemite, but the issue not resolved !!!

  2. Taz Mangus macrumors 68040

    Taz Mangus

    Mar 10, 2011
    I have seen this. I don't believe there is a way to change that.
  3. Arvind Muthu thread starter macrumors newbie

    Aug 16, 2015
    OMG !
    For last 4 days, I am trying to find some answers, tried almost all the possibilities but no luck !
    Its annoying ! such a silly issue, but the apple team can't resolve it !
  4. DeltaMac macrumors 604


    Jul 30, 2003
    Could that be a difference in the login sequence when using File Vault? Have you recently turned FV on?
  5. Arvind Muthu thread starter macrumors newbie

    Aug 16, 2015

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