MB LED no longer pulses when in sleep mode?

Discussion in 'MacBook Pro' started by pseudo7, Feb 12, 2008.

  1. pseudo7 macrumors newbie

    Joined:
    Oct 28, 2007
    #1
    Noticed this happened after installing 10.5.2. The system seems to be sleeping but the light no longer pulses -- it just stays off. Has this happened to anyone else?
     
  2. operator207 macrumors 6502

    Joined:
    Jul 24, 2007
    #2
    Deep sleep? I know in 10.4 you had to adjust a setting in NVRAM to make it happen, maybe yours is turned on?
     
  3. pseudo7 thread starter macrumors newbie

    Joined:
    Oct 28, 2007
    #3
    No, I'm not using safe sleep. I don't think any settings were changed either. Basically the MB's LED pulsed yesterday while using 10.5.1, then I upgraded to 10.5.2 and the light no longer pulses.
     
  4. Hankster macrumors 68020

    Hankster

    Joined:
    Jan 30, 2008
    Location:
    Washington DC
  5. pseudo7 thread starter macrumors newbie

    Joined:
    Oct 28, 2007
    #6
    Nope - reset the SMC and the LED still doesn't pulse when in sleep mode.
     
  6. rezonat0r macrumors 6502

    Joined:
    Nov 2, 2007
    #7
    Sounds like the system isn't really going to sleep. Does the hard drive spin down? Does it get cold after a while?
     
  7. pseudo7 thread starter macrumors newbie

    Joined:
    Oct 28, 2007
    #8
    The hard drive does spin down when I close the lid. So I'm pretty sure the system really is going to sleep (I tested that by using the Deep Sleep widget) -- something in my 10.5.2 update just messed up my LED.
     
  8. rezonat0r macrumors 6502

    Joined:
    Nov 2, 2007
    #9
    Interesting... I just upgraded to 10.5.2 and LED during sleep seems normal. Make sure the unit really does get cold after a while.

    Also, does the LED work at all? It should come on solid when the screen turns off (for Energy Saver).
     
  9. pseudo7 thread starter macrumors newbie

    Joined:
    Oct 28, 2007
    #10
    No, the LED doesn't work at all -- not even when the display is put to sleep. Normally I'd suspect the light itself is defective but I noticed someone on another forum had the same thing happen to their MacBook right after updating to 10.5.2...
     
  10. rezonat0r macrumors 6502

    Joined:
    Nov 2, 2007
    #11
    I believe the SMC controller chip is responsible for that type of thing. It should be what gets reset if you did the PRAM/NVRAM reset though.

    I assume you did the method where you hold a key combination at startup? There used to be a different method. Disconnect from A/C, remove the battery, and hold the power button for 10 seconds. Then try booting from A/C without the battery (and vice versa). Hopefully one of these things will kick it back into gear.
     
  11. pseudo7 thread starter macrumors newbie

    Joined:
    Oct 28, 2007
    #12
    Yeah, unfortunately, I tried both methods of resetting the SMC. I guess there's not much more I can do but wait and see if more people experience this LED malfunction. I guess it's not that big of a deal as long as the system is still going into sleep mode properly.

    Thanks for your help.
     

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