OS X :: Computer Not Going In Sleep Mode / Monitor Turns Off After Sometime
Apr 15, 2009
my monitor turn's off but the computer never goes into sleep mode. I've got both my monitor and computer set to turn off at 45 mintues of inactivity. I tried reseting the pram with no success. I deleted the com.apple.PowerManagement.plist file. but it still doesn't turn off, only the monitor. I've set it to 1 minute but only the monitor will turn off. Manually putting the computer to sleep work's fine.
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Apr 15, 2009
my monitor turns off but my computer won't go into sleep mode, both are set to turn off at exactly 45 minutes of inactivity.
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May 27, 2012
My computer sometimes turns off when in screensaver/ sleep mode. Then it doesn't want to turn back on. It eventually does. It's annoying!
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Jun 4, 2014
I am currently am using a MacBook Pro mid 2007 and was wondering it is possible to connect it to an external monitor and if so use it when closed without the comp going into sleep mode.
Info:
MacBook Pro
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Nov 24, 2006
I have a little problem with my last generation 12" Powerbook G4. Sometimes, after I wake it up from sleep mode, the screen has a kind of blue tinge to it, as if there was some blue transparent plastic stuck to it. After I reboot, it's just fine.
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Jul 20, 2010
when working on my new Imac sometimes the machine put itself in sleep mode! The screen turns black and I have to enter my password. Sometimes it happens 2 times in 1 minute; other times once in 1 hour.
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May 15, 2010
I am new to this forum, but hoping I can get an answer here. When placing my Macbook Pro in sleep mode by closing the lid, it goes into sleep mode, but immediately turns back on (with the lid closed), then after a short time goes back into sleep mode and then immediately turns back on. It keeps cycling like this. Any clues to why it will not stay in the sleep mode?
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Dec 3, 2014
I recently had my screen replaced because of a crack. Now I find when I open the laptop to use, after being on sleep mode. It momentarily turns blue, sort of flashes/glitches then works normally. Should I be concerned?
Info:
MacBook Pro with Retina display
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Dec 11, 2014
Why does my second monitor go into sleep mode randomly even though I'm currently working on the computer and it won't turn back on unless I restart the computer? Using Macbook Pro with Dell display
Info:
MacBook Pro, OS X Mavericks (10.9.5)
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Dec 13, 2009
Every time I wake up my Mac Pro, the monitor flashes 2-3 times before it is fully on. Quite annoying. Any idea what it might be? I have the latest Mac Pro 2.66 Quad (got a referub about a month ago) and LaCie 526 (same as NEC 2690). Basic video card, DVI connection.
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Nov 14, 2008
Could someone please explain to me why my computer is shutting down in sleep-mode. In addition, when it happens, the fan goes into hyperblow, which doesn't make sense because it would not be operating if the system were completely shut down. It acts like it is shut down but won't respond or wake up, etc. I re-loaded my system software per the Mac Store Genius' advice, but that didn't work. Is it possible that my power supply is going?
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Jan 17, 2009
I have an APC Back-UPS XS 1500 that I'm using for my Mac Pro. I had some issues with it beeping at me all the time, which has stopped. But now it's causing sleep problems with my computer. When the Data Port is connected to USB, the computer won't sleep. I unplug it and it sleeps just fine.
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Mar 12, 2012
On occasion, my MBP does not "wake up". My only alternative is to restart, Anyone else have this happen? Is there a way to wake up from sleep mode beside a restart?
Info:
MacBook Pro, Mac OS X (10.7.3)
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Dec 9, 2007
When my computer is about to go into sleep mode or when it is being activated from being inside sleep mode or any time my computer goals idle for 10 minutes or so something inside my computer clicks. So far there has been no problems is this a normal sound to here?
Information:
G5
Mac OS X (10.4.1)
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Jun 7, 2012
This becomes a problem when my wife wants to face time me from her Ipad and the Imac is sleeping.
Info:
iMac, Mac OS X (10.7.3)
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Dec 2, 2007
my computer doesn't turn off its monitor any more. i check the energy saver preferences, and its the same that i've had them before. the screen doesn't even dim anymore.
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Oct 28, 2008
If I put my comp on sleep mode, could I put it in my backpack and move around? OR is the hard drive still actively on and it may dmg my cpu/hard drive?
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May 14, 2012
I recently brought my computer to the Apple store to repair dents on the outside of my laptop.Ever since I received it back it does not go into sleep mode when I close the screen.
Info:MacBookPro
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Mar 7, 2012
When waking from "sleep" the screen appears normal but, the pointer leaves a trail of grey as it moves and the whole screen will turn grey if I keep moving the pointer. The computer is effectively dead. Have to shut down by using power off for six seconds and then re-starting. I know little about computers!
Info:
MacBook Pro, Mac OS X (10.7.3)
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Aug 23, 2009
I'm having a problem with my PowerBook G4 where is goes into sleep mode at random times. Mostly when I am streaming video..or at times the fan comes on, it sounds super high then boom. sleep mode again. After hitting the space bar, it comes back on, but it'll happen again shortly after. I've played with the sleep settings
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Dec 29, 2009
As of last night, my MBP started acting very strangely. After entering my username and password, it would enter the desktop for a short period of time and then kick back into sleep mode; the screen would turn back to black. Sometimes it will let me stay on the desktop for a long time and other times it will hardly let me stay on the desktop. I called apple support and they had me start the computer in safe mode; even then it occasionally kicks me out.
The tech guy said that it was a "strange software issue" and not a hardware issue. I thought it was a hard drive issue; my hard drive makes an odd sound when it unlocks (a grinding sound), but it has been doing that for quite some time with no issues. I tried to reset the SMC and it didn't do anything.
How should I remedy this problem? Is this a hard drive issue? Hard drive failure? Has the grinding sound finally caught up with me? I am running OS X; not leopard or snow leopard. I know I need to upgrade, but this shouldn't be happening.
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Dec 21, 2009
I just had the original 300 GB hard drive fail in my aluminum 24" inch iMac running the latest update of Leopard. I wasn't able to save it using diskwarrior (diskwarrior said it was some sort of mechanical failure) but I was able to recover most of the data from it by booting from an external hard-drive.
So I went out and purchased a brand new Western Digital Caviar Black 1TB drive. The install went fine, it found the drive partitioned it and installed Leopard successful. Then is crashed and disappeared when I left it alone to run all the software updates. I came back and the computer was stuck on "Restart Required" after downloading all the updates. I went to hit restart now, and the system just hanged, wouldn't do anything. So I hard powered down the system and restarted it. It came up with nothing, just stuck on the White Screen of Death. So I plugged the external drive back in and booted from it. Mac OSX couldn't find the drive and diskwarrior would crash if I tried to run it. I tried to boot up from the OSX start-up disk and it couldn't find the drive either.
So I took the case apart and made sure all the connections were solid and the drive was mounted correctly. Everything looked fine so I plugged it in and it started up fine. Finished the updates and the iMac ran great.
So I thought maybe it was overheating, so I've installed smcfancontrol and started to monitor the temp of the drive. I also took the mac apart again and sucked out any dust in the fans or vents. The drive never goes over a 105 F, so it doesn't seem to be overheating.
However, this is where the problem is consistent: everytime the iMac goes into sleep mode, it crashes and the iMac is unable to find the hard-drive again. Unless I unplug it completely for 5 minutes or so. Once I unplug it, it finds the drive and operates like a champ.
I think maybe there's an issue powering the drive back on? Anyone have any ideas?
And my follow up posting later that day:
Quote:
So I ran some tests just to see if was an overheat issue, hard drive malfunction, or sleep issue. I decided to start encoding a video, pulled up Word, Power Point, Excel, started downloading all 6000 mail messages off my server (I never delete my e-mail :-/), also started installing iLife 09, and pulled up a bunch of webpages in Firefox with multiple tabs.
However, I shut off all sleep mode options on the hard drive. I let it run for an hour and came back. Everything is fine, hard drive isn't locked up and smcfancontrol shows the hard drive running pretty hot (115 degrees) but not so hot I'm worried. So it's definitely something to do the hard drives going into sleep mode and not powering back on. It's also weird that I have to leave the computer completely unplugged for 10-15 minutes before the drive is recognized again.
So turning off sleep seems to be my work-around, however, this shouldn't be a long term solution. I'm worried that there is a bigger issue with the iMac, but I'm not sure what would cause this. I've been a PC guy for years, this was my first Mac, and honestly I don't know enough about the inner workings to narrow this down. I would assume this would have to do with the motherboard in some way? But I'm not sure how you would even test it.
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Jun 22, 2012
After using my MacBook Pro I close the laptop and it goes to sleep. Later when I return to it and open it, sometimes it can't find the network. The computer is able to see that I have an Apple Network available, but it won't connect.Sometimes when I try to connect, it gives me a timeout. How I fix it is to walk over to the router and unplug it and plug it back in. After I get the green light again, I go to the Apple Network and it works.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Jun 19, 2014
When I need to go somewhere or just eat lunch, I put my iMac to sleep. After that, when I come back to wake it back up, it stays black.
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Nov 30, 2014
My iMac wake unexpectedly from sleep mode then goes back to sleep 00:10-00:15 later. Yosemite is current.
Info:
iMac, Mac OS X (10.6.8)
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Jun 4, 2012
I have a PowerMac G5 1.8GHZ dual core with two GB of ram. I have read some posts saying that a cannon scaner, or an HP printer can cause the computer to not go into sleep. I have one HP 5550 printer If I unplug it, and restart the computer, then try to put it to sleep, it works sometimes. It will work sometimes with out the printer disconnected as well. I went through the Firmware on start up and reset all, and that seemed to work for a while. Now it will not go to sleep. It acts like it goes to sleep, the screens turn off, and I hear the click of the Power Supply turning off, but right after that click the computer turns right back on.
Info:
PowerMac, Mac OS X (10.5.8)
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Aug 10, 2009
I am running Mac Mini as a home server (turns out to be not a great idea, btw), and even though I set the preference to never sleep or shut down, it does go to sleep when there is no activity for long time. Since I am using it as home server, it should stay awake all the time or at least wake up from sleep when there is incoming ping from other computer, but it just goes to sleep.
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Sep 2, 2010
I bought one LG flatron e2350V, and i'm trying to connect it to my macbook pro, it's connect through minidisplay port - dvi. When in system preferences if i choose use monitor it appears with great resolution, beautiful image. But if i choose "use identical image for both monitors" the resolution on the LG turns crap.
What should i do to have identical image (so i can have my macbookpro with lid closed) but have at the same time an awesome resolution?
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Sep 7, 2008
I set my screen's resolution to 800x600 in order to play a newly downloaded game demo (Jets N'Guns). The screen went black and will not reset after trying many things:
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Mar 28, 2012
MBP/Lion - I'm using my MBP in dual monitor mode with an external monitor and power supply connected. If I close the lid and then disconnect the monitor, my MBP won't wake after opening the lid. I know that with Lion a change was made and the power stays on with an external monitor attached and the lid closed (with the adapter plugged in), but if you unplug the display, there doesn't seem a way out of this state. Even plugging the monitor back in, the display wont refresh In this state the power managment is confused. When closed, the power light is on, with the lid opened the power light goes off, the display remains blank and I can't wake the device. The only solution is to re-boot. as I just want to close the lid, unplug power and the monitor and leave work to go home. I end up running the battery down if I don't catch it before putting the MBP in my bag, and I always have to reboot.
Info:
MacBookPro, Mac OS X (10.7.3)
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