swiping up to mission control causes horizontal lines

Discussion in 'MacBook Air' started by clemsy, Oct 8, 2014.

  1. clemsy macrumors newbie

    May 19, 2014
    Hi guys,

    I've noticed in the past couple of days, that whenever I swipe up with four fingers to mission control, I notice a thin horizontal line (across the screen) will flicker on the screen. As soon as mission control is fully swiped, the line disappears, so its very brief.

    Any ideas why?

  2. motrek macrumors 68020

    Sep 14, 2012

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