Apple display occasionally don't wake from sleep

Hey guys,
I recently bought a macmini (2011) and a apple Thunderbolt Display. All works fine but a couple of times my display won’t wake from macmini sleep when i click the mouse or keybord! I power-cycling the monitor (unplugging power, waiting a few minutes, plugging back in) and worked for the first time. But in the second time not work… I reset the smc from mac mini and wake up again!
Is this is normal to happens several times??? It indicates some kind of problem in the video card in macmini or hardware problems in the display?
Many thanks

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MacBook Pro display sometimes does not wake from sleep, display is blank

My computer has been getting a lot of this weird issue that it is asleep, the light is pulsing. But when you go to wake it up, the keyboard lights up, caps light key will work, but the display is blank, nothing makes it turn back on.
I had a friend using it who I let use the guest account, but since the issue kept happening and all the guest account data kept disappearing, I had to create her an account. It's annoying, and sometimes if I catch the crash happening while the unit is display active, I get the color wheel and all the apps freeze up really bad. I'm lucky if I can save my work.
Sleep during this crash will also produce the error. Most recently I was trying to connect my bluetooth keyboard and it kept giving me an error. So I tried to turn off the bluetooth, no dice. Went into the root user, still no dice. Figured maybe the device didn't get reinitialized upon wake from sleep properly, put the unit to sleep and ding dong, wont wake up again!
From the console logs I've been able to find this string:
5/23/10 1:00:54 PM kernel Sleep failure code 0x00000000 0x21000000
I've not used any hacks or sleep widgets, so I don't know what the issue is.
Everytime I reboot from this I fsck the drive and repair permissions. I've tried zapping the PRAM also, next stop is delete the power management plist and reset the SMC. Who knows if any of it will work?
Anyone have any ideas?

dchrem wrote:
The machine is stock from Apple, it's a replacement for a previous machie try screwed up repairing which itself was a replacement for a machine that they couldn't get the part for, for over a month. Thank God for AppleCare!
AppleCare is the magic word. Time to contact them.
Btw the machine is 10.6.3 I hadn't updated my settings before I posted the initial question.
I was actually going to suggest that, but noticed in your later posts you had updated the info.
As for the smc and pram both were done today, so we will see what the story is. I also deleted the energy .plist file and had it recreated from within root.
Just curious why you're working in root? You should be able to do anything we've discussed from an admin account, and there's lots of potential for mishaps in root.
As for dlrunning DU, I was under the impression that it just ran fsck through the DU GUI. At least that's what it looks like when you view the console log for DU. I'll give it a try though.
I'm just repeating what Apple suggests.
I'm just worried that the little glitches are adding up to something catastrophic.
AppleCare.

Macbook occasionally fails to wake from sleep

i have a new macbook (purchsed in july) which occasionally (every 1-2 weeks) fails to wake from sleep. it either hangs on the blue screen which first comes up when you switch it on, or on the black screen which normally follows shortly afterwards.
i regularly use it "closed", i.e., with an external screen and keyboard, but the problem seems also to happen occasionally when i switch it on without these peripherals.
any ideas?
i've also had dvd player crash once. it was in full screen mode, and i couldn't switch to any other applications or force quit dvd player, so again i had to cut power.
Macbook Mac OS X (10.4.8)

Having similar issues...not that it happens everyday ...it's very infrequent..but yeah im in the same boat..
As far as the computer being hot...
Go to :
System Preference--->Energy Savings
From there you should have the boxed check both on Battery power and AC Cord to put the Hard drive to sleep when possible..
Once i did this it never happened again(the closing of the lid and still running)
as far as the other issue??Help.!!Anyone?

White iMac don't wake from sleep

Hi,
I have a white iMac 17" that is working very well, except for one thing: if it falls on sleep mode, sometimes it won't wake up.
This computer had a Lion fresh install a few month ago, so I do not think it is a software issue. It looks like something hardware that makes it not wake from sleep.
any idea what's wrong and how to repair this?
Thanks

10.7.3 did not cause your problem. Log into another account on your computer and see if the problem is replicated. If you don't have a second user account then create one. If the problem isn't replicated then you have a software problem that you need to track down in your normal user account.

IMac occasionally fails to wake from sleep mode

This is a transient problem. Happens every 2-3 days that computer fails to wake up from sleep mode. Space bar doesn't do anything and I finally have to unplug it and reboot. I have a late 2008 iMac and am running Lion. It has started doing this after I installed Lion but doesn't seem to be related.

It's tough to troubleshoot intermittent problems. You can try by restarting in Safe Mode, this will clear some caches. It's possible one or more is corrupt.

Cinema Display won't wake from sleep

After reading lots in the forums I've concluded lots of people have the same problem that we are mistakenly thinking is specific to a particular monitor or Mac or behaviour.
Problem: Display suddenly does not wake from sleep - incidentally after an OS update and Cuda update.
Hypothesis: This definitely seems like a software problem as I've solved it in so many new ways. (Some people are replacing hardware!) Once fixed, the problem recurs the next time the display goes to sleep. However solutions rarely work a second time.
Solutions:
1. Zapping PRAM fixes it.
2. Deleting all displays preferences fixes it.
3. Safe boot and clear caches may have fixed it.
4. Pulling the Mini DisplayPort cable and blowing on it has fixed it. (I thought it was dusty since it worked. It may have just been pulling the cable.)
5. Deleting a power management preference in System/Library/SystemConfiguration/ fixed it.
6. Moving the power plug from one slot on a power bar to another fixed it. (***!?!)
7. Creating a new user account fixed it.
8. Now I'm stuck.
Please can help me think of a new way to fix it? If I can get it going again, I will simply keep the computer and 2nd display awake forever.

I have a new fix!
8. Launch Magic Bullet Looks app and fiddle with the display settings!!! Woohoo! I got it back again.
As long as the display never goes to sleep and is never unplugged (tried that) I can keep using the monitor. Sadly this means never lettting the new iMac sleep.

Macbook won't wake from sleep - replaced logic board and batteries already

I have a 13" White Macbook on 10.5.5 that occasionally won't wake from sleep. This will happen with nothing plugged into the Macbook except for the AC adapter. I have done the firmware upgrade, reset the SMC, reinstalled Leopard from the DVDs twice, brought it into Genius and had the ram, sleep switch, and the logic board replaced. There are no bluetooth devices attached to the computer.
I've searched the forums but haven't found a definitive answer yet.
Message was edited by: multiphrenic

I've experienced the problem as well. I have the new aluminum macbook with all factory specs and no mods, except that I changed it from smart sleep to the original old mac behavior of instant sleep. It is intermittant and with mine, I've noticed that when the screen is open, the computer appears to be completely off, but when I close the computer the light on the front of the computer comes on. The only resolution I've found so far is to hold the power button for 5 seconds for a hard power down and then push it again--everything works fine.
There is indeed a sudden drop sensor, and in fact, it did happen after I accidentally hit the corner of my mac once on a tv while trying to set it down. That could be the answer...we might have to try disabling that because quite honestly, if I drop my mac while its on, I'm going to be more worried about the screen, the case, even the cute little plastic apple than the hard drive (I have backups galore).

IBook's failt to wake from sleep.

I've had an ongoing issue with two late '05 model iBook G4's that occasionally do not wake from sleep. I've documented that in an earlier post Titled "Topic: Waking from sleep requires Forced Shut Down on two different g4 iBooks,"
http://discussions.apple.com/thread.jspa?threadID=337599&tstart=15
The problem continues, and appears to have increased in frequency since the last OS update, although I can not say that with certainty, but I have noted a possible correlation between the problem occuring and the Dashboard being open when the computers go to sleep. Is anyone aware of any difficulties involving sleep issues, in particular problems waking up from sleep and the use or operation of the dashboard? The only widgets I use are Radar in motion, weather and ministat2.
And if anyone has any other asisstance from the previous thread, I would appreciate it.
ibook G4 1.33ghz 12, 1.42ghz 14 Mac OS X (10.4.2)
ibook G4 1.33ghz 12, 1.42ghz 14 Mac OS X (10.4.2)

You may have missed it above, but resetting the PMU:
http://docs.info.apple.com/article.html?artnum=14449
may resolve your problems regarding the iBook not waking properly from sleep. The Power Management Unit has control over the sleep function, so resetting it often helps when someone is having this trouble.
Every time you have to do a forced shutdown instead of a normal one, there is a chance of hard drive damage and you should repair the hard drive, either by booting into Safe Mode or starting up from the Mac OS X Install Disc by inserting the disc and restarting your computer, holding down the C key at the end of the startup chime. Then choose Installer > Open Disk Utility (in Panther) or Utilities > Disk Utility (in Tiger) and select the hard drive in the left column. Choose the First Aid tab. Click Repair Disk to test and repair the hard drive. Once you have repaired the hard drive with either Safe Mode or the Install disc's Disk Utility, then start up normally and repair permissions from Disk Utility in the Utilities folder on your hard drive.

Macbook Pro (2008) won't wake from sleep?

Two days ago, a day after replacing an old battery, my 2008 model Macbook Pro refused to wake from sleep. For the past 48 hours it has been doing one of two things.
          A) It will act normally, except that the screen is blank (make the start-up sound, and sound as though it's running when I try to wake it)
           or
          B) Act as if it's sleeping.
I have tried:
-Resetting the SMC
-Resetting the PRAM
-Restarting the laptop from battery power
-Restarting with it plugged in a battery removed
Someone gave me the idea to hook up an external monitor, and see if it's my screen, but it's in the "Don't wake from sleep" stage at the moment. It's is out of warranty, so I want to see if anyone has any solutions or suggestions before I pay someone to take a look at it.
Thanks!

I'm convinced the price of repairs is a ploy to drive up new sales figures! As are these convenient 'catastrophic' hardware issues! It's odd that every post asking about this fault crop up after 4 or 5 years of impeccable reliability, it's like they are self destruct to force you into the clutches of an overly friendly assistant who leaves you wanting to invite them round for Sunday dinner because your nan will adore them! Ahhh well shiny new apple things do fill the void in lives only satisfied by something over priced to stroke and adore!

MacBook Pro will not wake from sleep

My new 13" MacBook Pro will occasionally refuse to wake from sleep. Touching the keyboard or moving the mouse will turn on the keyboard background lights but the computer will not wake. This occurs without any peripherals attached. I have reset the PRAM and the SMC ... no help.
The only option for recovery is the hard power down with the power button and restart. Anyone else seeing this?

Yes and I hate it. I am having pretty much the same problem, and have tried the same solutions, also Iupgraded to Lion and there still has been no relief. My computer just runs slower.

TS4080 apple thunderbolt display image on display intermittently goes dark, does not wake from sleep after clicking mouse or keyboard, but there is "bonk" sound after clicking mouse or pressing keys. Rebooting by pressing the power button resolves issue.

My apple thunderbolt display (which I purchased 1.5 years ago; OS 10.7.5 Mac Mini) intermittently goes dark, does not wake from sleep after clicking mouse or keyboard, but there is "bonk" sound after clicking mouse or pressing keys, so am thinking it is a hardware problem with the display. Rebooting by pressing the power button turns the screen back on, but the same phenomenon has occurred several times. Could this be a software issue, or do I need to have my display repaired? Your feedback would be appreciated.

Hi ED, tough to tell, but it does sound like it's waking with the bonk, just not displaying.
Long shot but...
I wonder if it's a variation of this, of which I've seen many different symptoms...
Resolution
Move the mouse or trackpad cursor over the center area of the login window so you can see the user icons. Click on the icon of the user that you would like to login as, type in the user's password, and press Return.
If the login window is configured to show only the name and password fields, type in the user's name and password into the fields, and press Return (even if you cannot see the rest of the login window).
Additional Information
This issue will not occur if the display is not sleeping when the account is logged out. Use the steps below to confirm that the account is not configured to log out automatically while the display is sleeping:
1. Open System Preferences > Security & Privacy > General. Click the padlock to unlock the preference pane and enter your admin password. Click the Advanced button at the bottom, then see if the option "Log out after N minutes of inactivity" (where N is the number of minutes) is enabled.
2. Open System Preferences > Energy Saver and configure Display Sleep to occur after the account is logged out, by dragging the slider to a number of minutes that is greater than N was set to in the previous step.
Important: If automatic log out is not needed, disable "Log out after Nminutes of inactivity" in System Preferences > Security & Privacy > General. This will also prevent the issue.
http://support.apple.com/kb/TS4135?viewlocale=en_US

I cannot get the new mac mini to wake from sleep and trigger the displays - this is the second mac mini I have had and both have had the same issues. It worked before on my macbook extremely well...

I cannot get the new mac mini to wake from sleep and trigger the displays - this is the second mac mini I have had and both have had the same issues. It worked before on my macbook extremely well...
Using 2 displays, connected via HDMI and thunderbolt
Been on to support a number of times now - is anyone experiencing the same issues?

BUMP.
I actually showed this to Apple geniuses when I took my computer to the apple store, and it's still here. In console it says:
kernel[0]: Previous Shutdown Cause: -128
I don't know if that's related or not, but maybe helps?

Hello all, I have a 6G iPod Nano that I currently use as my primary watch. A week or so ago I started to experience a blank white screen when I press the "sleep/wake" button instead of the watch face (I have it set to wake from sleep to display the cl

Hello all,
I have a 14.88G iPod Nano that I currently use as my primary watch. A week or so ago I started to experience a blank white screen when I press the "sleep/wake" button instead of the watch face (I have it set to wake from sleep to display the clock). When I hard reset it, it will come back fine and the screen will respond and work as normal, as soon as I manually put it to sleep by pressing the "sleep/wake" button and then try to wake it the same thing happens and I have a blank white screen that doesn't respond to touch gestures or anything.
What I have tried so far to no avail:
Numerous hard restarts (holding the "sleep/wake" button with the volume - button).
Tried this: iPod nano (6th generation): Hardware troubleshooting
Changed the watch face to display.
Recharged the device overnight (without full discharge).
Since none of this works I'm out of ideas. Eventhough I have a 6G Nano it should no longer be under warranty since I was sent it as a replacement for a different (older) product.
Any ideas? Is this a known problem? Thanks in advance for any insight any of you could provide. Also, what time is it??
Regards,

Hey,
I have the exact same problem as you have described. I also used my ipod as a watch but starting from today, whenever I unlock it the screen turns white until a reset is done. Even a factory reset through itunes didn't fix it.
Have you found any solution?
Bah, this is annoying.
//Gubbar

Display no longer wakes from sleep after latest updates

G4 Quicksilver 933, nVidia Ti, 1.5GB, 20in Cinema Display
I applied the latest updates that were pushed out recently (10.5.2 and the "Leopard Graphics Update") and now my Apple display will not properly come up when I wake the box from suspend.
That is, it starts and runs fine, but if it goes into sleep, upon waking it will (sometimes) flash the contents of the desktop, and then go black. The litte green light is on. Happens from a logged in session, or from the main login screen.
I have to hit the reset or power button (or login via SSH and issue a shutdown) to get it to work again.
I only have a single monitor.
I tried:
o Powering the monitor off and on, both from the switch and by pulling the power cable
o Pulling the DVI cable and reinserting it
o Resetting NVRAM
o Re-applying both the 10.5.2 combo installer and the Leopard Graphics Update 1.0 in order
o Waving a magic wand... I mean, fixing permissions
o Changing the display resolution a few times
o Running fsck a few times (only because all these unclean shutdowns are making me nervous)
o Hitting the "Detect Displays" button in the Displays Prefs panel...
Aha! Hitting that button causes the display to flash and then go dark. I have to power cycle the unit to get the monitor to come up again.
I do have the special build option of the faster video adapter which was available all those years ago. It's quaint now, sure, but it was a fast card back then.
I'm stumped. It's surprising how something like this can turn a perfectly reasonable desktop into a boat anchor.
Message was edited by: John Verne

mjelacic wrote:
This Discussion is marked as Answered, but with my apologies to the other respondents, it is NOT. There is a problem. The software/hardware do NOT work as they are supposed to. Apple needs to address this problem immediately. Mac Book Pro will not wake from sleep when connected to a Cinema Display 23". The problem lies in the most recent operating system updates. Before the update the products worked as advertised, since then they do not. Period.
With all due respect, I am the one who posted this, and I marked it "answered." Yes, there very well may be a problem with the Leopard Graphics Update 1.0 (what a mouthful! I dub it "LGU v1.0" from this point on.), but this is so far only a hypothesis.
I found an immediate workaround which suits my purpose. If this does not suit the purposes of completely foreign (to this discussion) symptoms related to Intel-based Apple laptops and external displays, then so be it. I recommend splitting off your own symptoms to a new thread.
Certainly, my reading of the symptoms described after I posted mine mostly do not sound like what I ran into at all. For example, I never once said that my computer had problems waking from sleep. I said the /display/ had problems waking/starting up after sleep, and this is probably related to the "detect displays" mechanism that the OS uses to find attached displays when it comes out of suspend. Even if this is my misunderstanding it does not matter, since this is how it comes across to a reader. This may indicate that someone may want to clearly and carefully describe /exactly/ what they are seeing, and the steps they took in order to come to any conclusions they might have.
This will help Apple, and it will certainly help others that search these threads with their own similar but different issues they need solved.
If there is a common reproducible issue related to displays and the most recent update(s), then Apple already knows about it, or soon will. As far as my immediate needs are concerned, this is answered.

Display Changes Resolution When Computer Wakes From Sleep

I have a MacBook Pro bought in May of 2006. In the last year, this problem has been getting progressively more annoying to me. When the computer wakes from sleep (not every time, but most of the time) the screen will flash blue, then reset the resolution to 640 x 480, I think. To fix it, all I have to do is go to System Preferences and change the resolution, but when I do that, it pops up two windows, like it thinks I have a dual display set up. To fix this, I always click 'detect displays,' and it fixes it, but the next time I wake the computer from sleep, it does it again. This isn't really an urgent problem, but I would expect my computer to behave a bit better for me.
Thank you in advance for any aid you might give me.
Lisel

Hi Lisel. I have a similar age MacBookPro that does the same thing. I don't really know how to fix it I'm sorry, I wish I did cause it's annoying. I just thought I'd let you know you're not the only one with this issue.
Basically, for some reason it thinks it has two displays connected, even when there isn't. To stop it being a total pain, make sure when it does come up with the two Display Pref windows to set them both to 1440x900, at least then when it does go dual display it won't be 640x480 and you can still read stuff.
I've also left the Display Pref icon on the top tool bar (next to the AirPort and Bluetooth and stuff), so I can just click that and Detect Displays. When it does that it figures out for itself it doesn't actually have two displays connected and so goes back to normal.
I know that's a workaround and not a fix, sorry. I'd be keen to know if anyone else has any better solutions:)
Thanks,
Mark.

Apple display occasionally don't wake from sleep

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