Display won't sleep using energy saver settings.

I’ve had this problem for some time. I repaired permissions and the sleep timer worked for about a day and then never again. I’ve tried closing all applications that might be running something, didn’t work. Reset pram and tried all the other things I’ve read about and nothing works. My son, who is a system admin and knows OS and Windows said he was having the same problem running Yosemite. I’m running 10.8.5 on a late 2010 iMac.

Long shot.
Do a backup.
Quit the application.
In Finder hold down the option/alt key while selecting the Go menu item. Select Library. Then go to Preferences/com.apple.systempreferences.plist. Move the .plist to your desktop.
Restart the computer, open the application and test. If it works okay, delete the plist from the desktop.
If the application is the same, return the .plist to where you got it from, overwriting the newer ones.
If you want to make your user library permanently visible, run the below command in Applications/Utilities/Terminal.
chflags nohidden ~/Library/
You will need to do that after any updates.

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    Long shot.
    Do a backup.
    Quit the application.
    In Finder hold down the option/alt key while selecting the Go menu item. Select Library. Then go to Preferences/com.apple.systempreferences.plist. Move the .plist to your desktop.
    Restart the computer, open the application and test. If it works okay, delete the plist from the desktop.
    If the application is the same, return the .plist to where you got it from, overwriting the newer ones.
    If you want to make your user library permanently visible, run the below command in Applications/Utilities/Terminal.
    chflags nohidden ~/Library/
    You will need to do that after any updates.

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    Dragon Dictate in use. Occasionally mistakes are made. I correct the ones I notice…

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  • Display won't sleep after being in suspend once.

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    Regards Robin Hansson

    When rebooting the computer, the display sleeps after set interval and can manually be put to sleep using shift+ctrl+eject.
    However if the computer goes to sleep or I myself close the lid to make it sleep, the display won't sleep again.
    The display won't sleep after set interval in power settings and when I press shift+ctrl+eject the keyboard backlit turns off but the screen stays on.
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  • Energy Saver settings not controlling shutdown

    I've reset the SMU and PRAM and my problem continues to return. The computer shuts down in about 30 minutes regardless of what settings I put into Energy Saver. The only way I can prevent it is to open an image in Photoshop and then open an edit screen in a NIK plug-in. It still tries to shutdown but this stops it. I've noticed if Lightroom is running as well that it gets shutdown (even if playing a slideshow) and then the computer tries to quit but Photoshop stops it.
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    Hi Mel
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  • My macbook pro's screen constantly goes dim. I have set the energy saver settings for battery to 7 mins but it goes dim if the period of inactivity is less than 7 mins. Please help.  MBP 13" OSX 10.6.8 (2011)

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