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HT3131: Mac notebooks: How to use your computer in closed clamshell (display closed) mode with an external display

Learn about Mac notebooks: How to use your computer in closed clamshell (display closed) mode with an external display

HT3131 How to change wallpaper on second screen?

2489 Views 5 Replies Latest reply: Nov 28, 2012 4:08 PM by tko54321 RSS
Dina Level 1 Level 1 (135 points)
Currently Being Moderated
Mar 13, 2012 7:53 AM

Hi all,

 

I'm using a second monitor with my MBP, in clamshell mode. I recently upgraded to Lion. In the past, once hooked up to the external monitor, it would look exactly like my main screen, except larger. Now, it shows the default wallpaper. Why doesn't in mirror exactly my MBP screen? (I do have it set to mirror in the monitor preferences...) Thanks.

MacBook Pro (15-inch Mid 2009), Mac OS X (10.7.3), KVM switch to share monitor w/G5
  • eww Level 9 Level 9 (52,975 points)
    Currently Being Moderated
    Mar 13, 2012 8:03 AM (in response to Dina)

    When you are using the MBP in clamshell mode, there is nothing on the built-in screen for the external screen to mirror, so it presents the default desktop image. Open System Preferences > Desktop and Screen Saver and select the desktop image or folder of images you want it to use.

     

    The desktop will also revert to the default image if you've selected an image or images from an iPhoto Library, you have more than one iPhoto Library, and the currently active iPhoto Library (the last one you opened) is not the one containing your chosen image. If you don't have more than one iPhoto Library, this situation will never arise, and you can ignore this paragraph.

  • eww Level 9 Level 9 (52,975 points)
    Currently Being Moderated
    Mar 13, 2012 11:54 AM (in response to Dina)

    The connection was lost, yes. I don't know the reason and won't guess at it. Create a new connection, and see whether it sticks.

  • tko54321 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 28, 2012 4:08 PM (in response to Dina)

    I had the same problem, but a simple restart fixed it.

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