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  1. Geierwally

    R9 280X Resolution Problem -NO 2560x1440 under Yosemite

    Problem solved! I switched the Framebuffer from Futomaki to Hamachi. sudo nvram 1F8E0C02-58A9-4E34-AE22-2B63745FA101:AtiFramebuffer=Hamachi
  2. Geierwally

    R9 280X Resolution Problem -NO 2560x1440 under Yosemite

    Thank you for you reply but I've already done this. Max choosable resolution is 1920x1080 under scaled menu.
  3. Geierwally

    R9 280X Resolution Problem -NO 2560x1440 under Yosemite

    I have a problem with the resolution of my video card. When I boot, then I have the full 2560x1440 resolution. Once the PC is on Login Screen, the resolution drops to 1920x1080. I've tried everything but nothing has helped yet. Graphics card is a Sapphire Vapor-X R9 280X, Model: 11221-20-40G...
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