Mid-2014 with dedicated GPU users, can you guys try this?

Discussion in 'MacBook Pro' started by FlaccidSnake, Sep 26, 2014.

  1. FlaccidSnake macrumors newbie

    Sep 26, 2014

    Please see this video:

    I was able to see this black flicker/blinking when I reproduce this test.
    Can you guys try this and also set your resolution about "Best for Retina"?

    The reason why I searched this issue is because I run into this for apps that uses dGPU like Google Chrome.

    I currently temporarily bypass this issue by using gfx.io.

    I'm wondering if this is normal for all you dGPU Retina users?

  2. poiihy macrumors 68020


    Aug 22, 2014
    That's completely normal!
    How does it bother you?!
  3. leman macrumors G3

    Oct 14, 2008
    I would say some occasional flickering is ok when you change your graphical settings like that. It is certainly not ok when the system is running in the automatic switching mode and you experience flickering.
  4. FlaccidSnake thread starter macrumors newbie

    Sep 26, 2014
    I experience this occasionally when I'm using apps like Google Chrome where it switches on dGPU.

    This never happens to me on my old 2009 unibody with discrete card.

    My colleague who has the 2012 Retina doesn't have this issue either even when doing the manual switching.

    Does anyone have a Retina to see if they can reproduce this also?


    It bothers me because it happens intermittently while I'm using some apps. I'm forced to use gfx.io to force to use integrated to avoid this issue.
  5. goMac macrumors 604

    Apr 15, 2004
    The 2009 had two cards, but it did not do automatic switching. You had to change the setting and then logout before anything would actually switch.
  6. FlaccidSnake thread starter macrumors newbie

    Sep 26, 2014
    Just found this old thread:

    Seems I'm not alone with this issue. Kinda distracting. It looks like there just isn't enough screen buffer while you're on higher resolution. To be honest, I think this issue can be fixed via a firmware or driver update.

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