Windows 10: Wrong resolution on main display at boot in dual screen mode Solved

  1.    18 Sep 2016 #1

    Wrong resolution on main display at boot in dual screen mode

    In a few words,
    I have a MSI AMD Radeon HD 7700 Graphic card with the latest driver installed 16.40.2011 in Win 10 Pro 1607, and I've noticed that when I plug the second monitor (a hd ready wide TV screen) into the hdmi slot, the main desktop screen (1280*1024) have the boot logo screen sequence stretched in vertical.

    The resolution are set as recommended but indeed these are different. As soon as I remove the TV, everything is getting back to normal. Anyone experienced this behavior ?
      My ComputerSystem Spec

  2. Posts : 1,927
    Windows 10 x86 14383 Insider Pro and Core 10240
       18 Sep 2016 #2

    Yes there are problems with second displays affecting the primary display in many cases.

    You may be lucky in the fact that removing the second display restores the primary display to normal - sometimes it remains distorted until rebooting.

    No doubt the problems will go in time as the TV hardware improves, and the PC display drivers become more effective for multiple different display formats.
      My ComputersSystem Spec

  3.    18 Sep 2016 #3

    oh, good to know, thanks; As soon as the boot sequence is finished and we are into the OS window, the resolution is fine on the main display even with the second display plugged in. It looks like is something related to the way UEFI handle the boot screen resolution not the VGA driver because this is happening before getting into the OS as I've mentioned above, imho.

    LE: I've managed somehow changing the way mobo's logo is displayed during the boot sequence in UEFI.
    There are 3 options: in Auto mode the screen is vertically stretched (not a good option) but using Disable or Full screen could be a better approach, the boot screen it looks fine on the main screen.
    Last edited by Sara; 18 Sep 2016 at 14:06.
      My ComputerSystem Spec


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