Monitor won't sleep

Discussion in 'Mac Pro' started by miamialley, Jun 1, 2010.

  1. miamialley macrumors 68030

    miamialley

    Joined:
    Jul 28, 2008
    Location:
    Los Angeles, CA
    #1
    Even though I've had the same setting (monitor goes to sleep after 10mins) since I got my ALUM MBP 18 months ago, the monitor will often not sleep. It just stays on. I restart...sometimes it will sleep (after appropriate inactivity) and sometimes it won't. I don't have a screen saver of any sort enabled...just monitor goes off at 10 mins.

    And yes I'm positive the mouse isn't being moved or keys pressed.

    Ideas?
     
  2. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #2
    what application do you leave active when this happens? i find some applications to be very tempremental - e.g. Safari, if there is flash on the website often my screen will not sleep.

    i normally go back to the Finder and make it active, then the screen will sleep for me.
     
  3. miamialley thread starter macrumors 68030

    miamialley

    Joined:
    Jul 28, 2008
    Location:
    Los Angeles, CA
    #3
    Hmm...I'm not sure I'll have to play with it. I've had the computer for a year without this problem. Not sure why it would start happening.
     
  4. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #4
    hmm odd. maybe its worth checking out the program "Activity Monitor" (in the Utilities folder) and seeing if there is anything chewing CPU usage.
     
  5. miamialley thread starter macrumors 68030

    miamialley

    Joined:
    Jul 28, 2008
    Location:
    Los Angeles, CA
    #5
    As of now it's working again. I set the monitor to turn off after 1 min to test and it works as planned.

    Re: Activity Monitor, iTunes and Safari (Flash player) are each using 1.4%.
     
  6. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #6
    hmm good to hear anyway. :)

    those CPU usages are perfectly normal.
     
  7. miamialley thread starter macrumors 68030

    miamialley

    Joined:
    Jul 28, 2008
    Location:
    Los Angeles, CA
    #7
    The thing is, in a few days the monitor will remain on when it should sleep again. I'll have to keep poking around. I just wondered if anyone else had the same issue and maybe found a fix (or cause).

    Thanks for the help!
     

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