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IMac won't stay asleep

408 Views 11 Replies Latest reply: Dec 31, 2012 4:24 AM by Cobbyco RSS
Cobbyco Calculating status...
Currently Being Moderated
Oct 5, 2012 12:02 PM

If I leave my iMac alone a while the screen will go off but it seems that after I don't know how long it pops up the password box with the starry background. This is the box that appears when I jiggle the mouse or trackpad.


The problem is this box will not then disappear and it's actually burnt an image on the screen. It does seem to have faded after leaving it switched off for a few days but I'm nervous about leaving it on as it always seems to do this and I don't want a permanent image!


I read that Spotify can stop macs going to sleep but I've left Spotify off, in fact I've closed down all programs, but it still happens.  Anybody got any ideas to try?


I have the display and computer sleep options set to trigger after about 15m and am running Mountain Lion.  I have Carbonite running in the background but can't think of anything else relevant.



imac 3.06GHz Core 2 Duo, Mac OS X (10.5.4)
  • 1993\'s Nerd Level 1 Level 1 (15 points)
    Currently Being Moderated
    Oct 5, 2012 1:33 PM (in response to Cobbyco)

    Do you manually set it to go to sleep? If not check your 'energy saver' in system preferences to make sure its set to your own preferences.

    If it randomly wakes up, this could be a huge number of reasons such as an automatic software update to a faulty mouse which detects false movement. However if a mac is sleeping properly, moving the mouse shouldnt cause it to wake, you should have to actually click or press a key on the keyboard. It sounds like your mac is just on standby, not actually sleeping.


    What sort of mac is it? The 2006 white imacs with eyesight are nautorious for faulty screens. Mine unfortuently is suffering with the dreaded vertical lines. If you are getting screen burn however, I suggest changing your background to a plain colour and more importantly not leaving it on standby with the login screen. Just put it to sleep so that the screen turns off and that should help with avoiding the screen burn.


    hope this helps

  • seventy one Level 6 Level 6 (8,525 points)
    Currently Being Moderated
    Oct 5, 2012 3:23 PM (in response to Cobbyco)

    When the password box pops up it is usually when the mac is restarted after shutdown, rather than sleep.   What do you actually do when you are finished ... Click on Sleep, or Shut down?   Certainly check the settings but this could be something else entirely.

  • seventy one Level 6 Level 6 (8,525 points)
    Currently Being Moderated
    Oct 6, 2012 12:45 AM (in response to Cobbyco)

    Well, we all have our ways of doing things      I generally put my Mac to sleep if I am away for even a few minutes.   You should check the settings in Systems Preferences > Energy.   My settings are 10 minutes for sleep and display, and items 1,3 and 4 checked off below that.   Then in the schedule screen both boxes are unchecked (this may be your problem).


    Of course, these are my choices, not the rule, you understand.


    Hope all this is some help.

  • seventy one Level 6 Level 6 (8,525 points)
    Currently Being Moderated
    Oct 6, 2012 4:51 AM (in response to Cobbyco)

    I notice also that you are on 10.5.4 if your profile is up to date.   Try updating to 10.5.8 via the combo update.    This passage by Pondini looks good advice, his usually is.   Scroll down to the final section    OSX Tips Installing the "combo" update and/or Reinstalling OSX

  • seventy one Level 6 Level 6 (8,525 points)
    Currently Being Moderated
    Oct 6, 2012 9:35 AM (in response to Cobbyco)

    Ahhh.   I should have realised when you mentioned Mission Control.    Afraid that puts me out then; I don't have Mountain Lion and I am much less acquainted with its workings.   Hopefully someone else will stop by a littls later.


    Sorry I can't help further.


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