Spontaneous sleep

Macbook Pro running OS X Lion 10.7.3.
Computer goes to sleep spontaneously, sometimes after less than a minute after wakeup.
To wake up, I have to close the lid and wait a considerable amount of time.
I have tried monkeying with the Energy Saver settings, though that did not seem to have any effect.
I just shut down and rebooted... and so far so good... but is that the true solution?

Hi,
I had the same problem occuring, twice in the same day! I actually waited longer after complete shutdown (just to confirm that it has, in fact, shut down) but a couple hours later I would see that 'sleep' light on and my laptop super hot. I called Applecare today and was told to:
unplug the adaptor, shut my machine, remove the battery, press the power button for 5 seconds (I'm told it resets the PMU... erm... yah. I'm a new Mac user so that really didn't mean much to me...), put the battery back in, plug in the adaptor and start up again. and cross your fingers.
Hopefully that will work out for you guys too. Although I still gotta send in my macbook for replacement covers due to discolouration. Ergh...

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  • IBook G4 spontaneous sleep without warning

    New iBook G4 1.5GHz (Oct 2005). Occasionally, the machine spontaneously puts itself to sleep without warning. (The usual "please connect your A/C adapter" dialog does not appear.) This happens even when the battery is nowhere fully discharged. The machine will not wake from sleep unti the A/C adapter is connected, and the lid is closed and opened.
    Related item: We purchased a different unit (identical model) in Aug 2005 which initially exhibited similar symptoms. However, that one was worse, because it would sometimes shut itself down completely. That is, it didn't just go to sleep, it turned OFF. A couple of rounds of repairs (including a logic board swap) resulted in no resolution of the problem, so we exchanged it for a new unit, which has not exhibited any of the same problems.

    Hi Paul,
    Sorry to hear about your issues with your iBook. I'd suggest calling AppleCare while you're still within the 90 day complimentary phone support and taking it up with them before you're out of warranty (making the assumption you didn't buy AppleCare of course).
    That way if your iBook is defective (which it might be), it's better to get it taken care of quickly and while still under warranty.
    Best of luck!
    -Ryan

  • Spontaneous Sleeping Issue...

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    A bump and an update -- I've discovered a work-a-round until I can get my computer into the local Mac doctor when I get home from school. Apparently, when my hand gets close to the top of the screen, this is when the screen goes blank (I do frequently adjust my screen so that I see it at the best viewing angle.). The only thing that will then awaken the computer is the power button.
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  • Spontaneous forced sleep?

    My new (3 months) G4 Powerbook has begun spontaneously going to sleep. It does not appear to be a battery problem. The screen goes dark, the sleep beam begins pulsating. I can power it back up (but sometimes not right away) by depressing the command and option keys, sometimes the power button. When the screen comes back whatever I was working on is still there, though itunes will stop and if I am connnected to the internet (I have a dial-up) it will terminate the connection.
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    Hi!
    I hope this solves your problem, because I have this problem as we speak, and my Mac has finally gone completely unresponsive on me (it hangs on boot after one too many forced resets).
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  • My 2010 Macbook Pro will randomly go to sleep for a few seconds during use, before it starts itself back up again to keep running.  Any ideas?

    I've had this computer for about a year, and only recently has it started doing this spontaneous sleep thing.  It will be working fine, and then without warning the screen will go black and all the lights will shut off for just a few seconds.  I can hear the fans stop running, and then several seconds later, the fans will resume running, the keys light back up, and the computer resumes functioning like nothing ever happened.  It happens at least once a day now, and I would like to know what is going on and how I can fix it.  Any help would be much appreciated, thank you!

    HAve you tried using a different power chord? If the power chord is not the issue, it could be the power supply inside your mac.

  • PowerBook randomly sleeping

    My computer goes to sleep whenever it wants to...and I can't wake it up, it wakes up on its on, it actually just shutoff while Im writing about it shutting off
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    PowerBook   Mac OS X (10.4.4)  

    Search within Discussions>PowerBook for "spontaneous sleep". This is not a new issue. After being made to jump through hoops by AppleCare (including erasing my hard drive and reinstalling system), we could find no solution.
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  • SOLVED : Lenovo X60 spontaneou​s sleep mode problem.

    The problem is the flat panel screen! (either t-conn board and/or backlight). Viewiz HV121X03-100 Part No. 42T0359 FRU No. 13N7205. LCD : Wistron P/N:60.4Q443.001
    I have 2 identical of Lenovo X60 laptops, with swivel-type-hinge at center. One has this spontaneous sleeping mode problem. I thought it was the Inverter problem - WRONG. Next some say it's the motherboard, CPU fan & heatsink, BIOS updates wrong also. All of these assumptions and theories are wrong diagnosed.
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    Roan
    Computer Technician
    Chapel Hill, NC

    Hello @Tilia,
    I have read your post on how your notebook computer is experiencing an issue with waking up from sleep mode, and I would be happy to assist you in this matter!
    To further diagnose this issue, I recommend following the steps in this document on Troubleshooting sleep and hibernate issues in Windows 8. This should help configure your power management settings to effectively use sleep mode on your system. 
    Additionally, you can also restore your notebook's default power schemes by following the steps below:
    Step 1. Click the Start button
    Step 2. In the search box, type "Command Prompt"
    Step 3. Right-click Command Prompt
    Step 4. Click Run as administrator
    Step 5. At the command prompt, type powercfg /restoredefaultschemes and press Enter 
    reference: http://superuser.com/questions/669571/windows-8-1-64-bit-power-schemes-gone
    Please re-post with the results of your troubleshooting, and I look forward to your reply!
    Regards
    MechPilot
    I work on behalf of HP
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

  • Long back-and-forth with Lenovo... any suggestions?

    Below is a excruciatingly detailed record of my long struggle with Lenovo's customer support regarding my T61, for which I purchased a warranty that is good until June 26, 2010. This is the result of painstaking documentation all along the way; I have the actual case reference numbers and serial numbers, etc., if it would help anyone from Lenovo who happens across this.
    On Monday, April 27, 2009, my T61 (7662-CTO) began
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    It has now been three and a half weeks since my machine first began having major issues. This laptop has been to EasyServ twice and come back each time with new hardware-related issues. It has been taken to a Lenovo-approved warranty service provider, who acknowledged and reproduced the problem but was unable to repair it. I have called Lenovo's customer support number at least a dozen times and spent HOURS giving case reference numbers, explaining and REexplaining my issues, and waiting on hold. I have gotten little actual work done in these past weeks. I have reinstalled or reimaged Windows at LEAST 10 times. My school fieldwork requires me to have a working machine. I also enrolled in lynda.com's online tutorials for the month of May (through Duke University), but these extended, unresolved problems have cost me dearly. If there is anything that anyone on these forums can do, please help. Help me get my warranty honored. Please, help restore my faith in the Thinkpad legacy.
    Thanks for your time.
    Matt Hauger
    IBM/Lenovo customer
    Durham, North Carolina
    Solved!
    Go to Solution.

    TPFanControl reads the temperatures reported by your ThinkPad's "embedded controller"--which controls the fan speed. You can use it just for monitoring temperatures, you don't have to control the fan with it (read the documentation for the config file).
    RMClock, among other things, plots cpu frequency, voltage and temperature vs. time. This can be useful to observe when your cpu is throttling itself to avoid overheating. You can also use RMClock to undervolt your cpu to lower temperatures. But you shouldn't have to do that to prevent the problems you're having.
    mprime in torture test mode will stress your cpu and memory. You can run this while monitoring your system temperatures. At the very least, running the mprime torture test should quickly tell you whether your unwanted sleep is indeed correlated with cpu activity.
    Results of Your Ideal Business-Class Laptop survey, concluded 2009-07-29.
    Did someone help you?
    Say thanks! with a kudo.
    Even better: Pay it forward, help someone else.

  • Intermittent Kernel Panics - maybe related to iTunes? Something else?

    I have been experiencing intermittent kernel panics the past few weeks - the ones where the screen goes grey and you get the message in multiple languages telling you that you have to restart your computer. I have been trying to figure out exactly what is causing them and, thus far, have been unable to come up with a definite pattern. It does seem that I am starting to narrow things down a bit.
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    Message was edited by: kalaluka

  • Screen dimming/flickering & power source alternating on 1GHz model

    I have a 12" 1GHz Powerbook running 10.5.6 that has developed 2 problems, (possibly simultaneously? I can't say for certain). The first problem being that the screen has started dimming and then coming back to "normal," at rate of about every second, so that it is almost flickering.
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    Hello,
    Powerbook Pro - 10.4.11
    I have exactly the same issues, with no solution yet. It does seem like some kind of spontaneous sleep issue, as the sleeping light by the latch goes on.
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    - reset Open Firmware
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    - test with battery, no power adapter
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    Any suggestions for me?
    mark

  • Powermac g5 quad core reboot issue, led etc.

    Hey guys. Gals. Whomever. Have a g5 quad core that has been bullet proof solid until recently. Annoying little red led popped up. (under the 1st ram slot, which co-incidentally is empty.) Then a second red one (Under 4th ram slot, 1" or so in from the edge of the board) went on..
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    I have seen
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    -removed all firewire devices (only had one a high speed camera card reader)
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    -removed the battery on the motherboard
    -shut the machine down, stuck the osx disc in, and restarted.
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    bought machine new, but come old os in 2005. upgraded to this one and lost original disc in a move. D'oh.
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    2/18/09 9:19:36 AM com.apple.loginwindow[35] Shutdown NOW!
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