Yosemite login screen background

Discussion in 'OS X Yosemite (10.10)' started by jgbr, Aug 21, 2014.

  1. jgbr macrumors 6502

    Joined:
    Sep 14, 2007
    #1
    Hi

    Does anyone know if the yosemite login screen background (the blurred yosemite default picture) can be changed easily or a way to do so? I had hoped Apple would add any option for this in system preferences.

    Thanks
     
  2. umzyi macrumors regular

    umzyi

    Joined:
    Apr 21, 2011
    Location:
    UK
    #2
    Login screen background in yosemite is default to your current desktop background. Once you change your destop bacground wallpaper, the login screen background change as well.
     
  3. jgbr thread starter macrumors 6502

    Joined:
    Sep 14, 2007
  4. bmac89 macrumors 6502a

    bmac89

    Joined:
    Aug 3, 2014
    #4
    Login background doesn't change for me either.
     
  5. umzyi macrumors regular

    umzyi

    Joined:
    Apr 21, 2011
    Location:
    UK
    #6
    Yes could be, file a report!
     
  6. bvv macrumors newbie

    Joined:
    Sep 7, 2014
    #7
    A few simple steps:
    Code:
    sudo ln -sF [An image you want to use as a wallpaper].jpg /System/Library/CoreServices/DefaultDesktop.jpg
    sudo rm -rf /Library/Caches/com.apple.desktop.admin.png
    Log out.
    Done.
     
  7. RadicalxEdward, Sep 14, 2014
    Last edited: Sep 14, 2014

    RadicalxEdward macrumors 6502

    RadicalxEdward

    Joined:
    Mar 8, 2011
    #8
    Mine changed when i changed my background wallpaper. It was a nice pic of my gf at the time. Now we've been broken up for a month and a half and I'm still stuck with a blurry picture of her as the login background, despite having changed the backgrounds of all users.

    EDIT: I tried again and for some reason it worked this time. Not sure why.
     
  8. ErikGrim macrumors 68040

    ErikGrim

    Joined:
    Jun 20, 2003
    Location:
    Brisbane, Australia
    #9
    Because you have finally let go.
     
  9. Cloudrider macrumors newbie

    Joined:
    Nov 5, 2014
    #10
    Logischen is gray

    Good Evening,

    Sorry I am New here and Switched from windows. My question: My login screen is gray and then comes the prompt where I suppose to put my password in, it doesn't show the blurry version of my wallpaper like you described. Any idea how to change that? That gray is ugly...
    Thanks a lot!

    Art
     
  10. ErikGrim macrumors 68040

    ErikGrim

    Joined:
    Jun 20, 2003
    Location:
    Brisbane, Australia
    #11
    Do you have File Vault enabled on your startup disk?
     
  11. Cloudrider macrumors newbie

    Joined:
    Nov 5, 2014
    #12
    Login Screen

    Hey,

    Yes! File Vault is on and I switched it yesterday off and MBP is still calculating / de encrypting . Yes my question was targeted to keeping the File Vault on...

    Best regards Art
     
  12. jimmyj3rd macrumors newbie

    Joined:
    Dec 31, 2014
    #13
    Custom OSX 10.10 Yosemite Login Background

    In the process of building a custom OSX 10.10 image I found the following to work for setting custom login background, prevent users from changing it.

    1. Replace /Library/Caches/com.apple.desktop.admin.png with custom png background. Could also rename original file to hold onto.

    2. Log off or reboot to make sure new file is being used.

    3. Log back in and then Lock the file running terminal command:

    sudo chflags uchg /Library/Caches/com.apple.desktop.admin.png

    Done.

    If you don't lock it, when user changes their desktop background it will replace the com.apple.desktop.admin.png file with a blurred version of their desktop background

    If you want to unlock the file run:

    sudo chflags nouchg /Library/Caches/com.apple.desktop.admin.png

    On previous versions of OSX I had run into issues with the OS using my custom PNG files created from Adobe Photoshop (Likely do to how i saved them), so I typically just open my custom png or jpg images in Apple Preview app and do an export to PNG, resolved that issue. If you run into issue might be worth doing.

    Hope this helps someone.
     
  13. Cloudrider, Jan 2, 2015
    Last edited: Jan 2, 2015

    Cloudrider macrumors newbie

    Joined:
    Nov 5, 2014
    #14
    This looks great. Thanks a lot Jimmy but I cannot find the the file "com.apple.desktop.admin.png" in my cache folder. Any ideas?

    Thanks a lot Cloudrider


     
  14. jimmyj3rd, Jan 2, 2015
    Last edited: Jan 2, 2015

    jimmyj3rd macrumors newbie

    Joined:
    Dec 31, 2014
    #15
    Yosemite Login background

    Make sure your not looking in User Library/Caches but root Library/Caches Should only see maybe 8 files and 2 folders. Open Macintosh HD then should see Library folder w/ Caches in there.

    Also you might not see the extension .png might just show as com.apple.desktop.admin
     

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