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  1. #1

    Member Since
    Jan 21, 2011
    Newcastle upon Tyne, UK
    Macbook, iPad, iPhone
    Unhappy Extended Desktop not working
    Hi I am trying to hook up my Macbook (aluminium version) to a Samsung 226BW monitor for an extended desktop.

    I have done this before so am not sure why it has stopped working but it works in mirror mode but when i change to extended desktop the screen just goes black. I can move applications into the extended desktop area but they do not show up on the monitor.

    The monitor is working for mirror so i think connections etc are fine... i am puzzled???

  2. #2

    chas_m's Avatar
    Member Since
    Jan 22, 2010
    Victoria, BC
    Mid-2012 MBP (16GB, 1TB HD), Monoprice 24-inch second monitor, iPhone 5s 32GB, iPad Air 2 64GB
    Sounds like a resolution mismatch. You have set the extended desktop to the resolution the 226BW can't handle perhaps.

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