After installing mavericks, the iMac will not wake from sleep properly (at all)

I have ha dthe same problem in my mid-2010 iMac. The problem is that sleepwake crash also corrupts something in the OS and I can't booot at all. Plus, a starnhge miniature text page (with dots and lines appears over the cursor). After it first occurred two weeks ago, the only thing that worked was to take it to a shop and have the HD formatted and Mavericks reinstalled. Everything seemed fine, but today I had the exact same problem.

My early-2011 Macbook Pro is also running 10.9.1, but I have yet to see this problem in it.

Tchau!

Sosby, this was my "solution" too, on a Mac Pro. Manually sleeping the computer when I step away is a small price to pay to keep the thing from crashing until Mavericks gets updated to correct the problem. I can understand that casual users might get very irritated with this, but I log about 15 hours a day on my machine.

I've been looking through the many threads of a similar nature on this problem. Looks like a lot of people are having the issue even though slightly different circumstances. Hopefully all of these thousands of users are hitting the Apple feedback form??

Bob:

Yesterday the Mac Mini would not wake from sleep again. It ran O.K. on the clean install for several days, then one time would not wake up after I had left the compter alone for about an hour to eat supper.

You'll love this one... I had not logged off. I was just going to be gone a couple of minutes and then come right back, so I didn't bother to log off. Stuff happened and I ended up eating before I returned to the computer. The screen was off so I hit the space bar to wake sleeping beauty up. It came up to a very dark grey screen. Severeal mouse clicks and space bar, escape key clicks later, the screen changed to a light grey screen. The color it is normally when first booting up. What happens next is interesting. On a hunch, I clicked the mouse once and typed in my password. My desktop reappeared almost instantly after I hit the Enter key!

The trick hasn't worked again, but the two other times that the computer has not awakened from sleep happened after I logged out.

Everyone Experiencing the issue:

If you are an only user, try clicking once and entering your passowrd. It will be interesting to note if this works for anyone else who may not have logged off, or if it works for a single user after logging off.

Cheers!

SeiFy:

had this happen to me too. Happened once but have been unable to recreate the behavior again. I've taken another approach at this time, which my system seems to have settled down with the monitor issue. I've got a feeling it's a either a video driver issues and how it is interfacing with Thunderbolt ports and/or issue when the system puts itself to sleep. Below is what seems to be working for me for the last few days.

iMac Hardware:

27" (Late 2013)

4GB Video Card

16GB Ram

1TB Fusion Drive

2 ASUS 23" Monitors: 1080P

1 external connected to thunderbolt via DVI

1 external connected to thunderbolt via HDMI

*Note: Originally had both hooked up via HDMI but, bought a Thunderbolt to DVI cable to continue testing. You can get them for 10-15 bucks on Amazon so, figure it was worth a try.

Hibernation Modified:

“sudo pmset -a hibernatemode 3″ = suspend to disk + RAM

Energy Saver Settings:

Prevent computer from sleeping automatically when display is off = Check

Put hard disks to sleep when possible = Check

Enable Power Nape = Check

Here is an interesting observation.

Test Case #01:

Condition: Shift-Control-Media Eject (puts all monitors to sleep)

Observation: When using this when stepping away from the computer (so far) the last few days the system wakes up the monitors without any issue. Left the system for 48 hours untouched and the monitors woke-up without issue.

Test Case #02:

Condition: Let the system go to sleep automatically, or force sleep mode

Observation: Mixed bag. Sometimes get the gray screens or the iMac display and one of the ASUS external monitors will wake-up but the 3rd won't. And then need to power-cycle the system for the displays to to all come back.

I'll certainly keep providing an update. Being in the IT field the behavior leads me to believe the issue may be a logical issue. Hope Apple will be able to fix this with the upcoming 10.9.2 Mavericks update. Noticed the beta had video card driver updates slotted for it.

Late 2010 iMac, max loaded at that time. Running 10.9.1.

Same SLEEP/WAKE issue everyone has discussed. Same type of discussion strings all over the place. All SLEEP/WAKE issue post Over Night. (key part).

Here is my quick summary of trial and error, I have done all of these in just about every combination possible:

1. Nothing external connected. All removed.

2. Reset every possible "reset", CSM, PRAM, etc.

3. Unplug, wait forever.

4. Command +R (reload Mav)

5. Command + R (Disk Utility everything)

6. ERASED HD and reinstalled clean new "factory" (in theory) Mav.

7. Energy Saver settings. ALL, some, nothing.

Two things I'm trying now:

1. No screen save. Completely off, set to NEVER with Factory default Energy save settings. I'll know TOMORROW. (Key part of all discussions, almost always requires a significant amount of SLEEP time. (aka over night)

2. Downloading a 3rd party Screen Saver /sleep app to maybe interfere with the current process. The best fix sometimes is to break it less badly. 🙂

Two things that have solved the problem:

1. I recoverd my computer with a random late 2012 Time Machine backup. Let it sit for two days and it WOKE UP both mornings.

2. (I write this with an annoyed and sacrastic typing tone) Shutdown my computer every night after work. (aka. Avoid the sleep/wake service entirely.)

I'm 99% sure this is a Maverick software issue that is in conflict with something a few of us have. I'm hoping Apple reads these threads because I'm not contacting them about any of it. (zzzzzzzzzzz)

I'll let you know if my iMac gets a reprieve from the Green Mile tomorrow or Monday.

SeiFy,

I can confirm this is what is happening to me. Mine normally occurs if I ever put the screen to sleep from the main login screen (without logging in). Like clockwork if you put it to sleep from that screen, give it a minute, wake it back up with spacebar or any key, then I get the light gray blank screen. Without clicking anywhere if I type my password in and hit enter, then everything logs in as normal. It's acts as if the login screen is just covered by the light gray screen and if you type your password in it still does what it is suppose to do.

I have been working for a few days now with applecare phone support, have my case number and one of the higher up support people helping me, and I can say that when he looked there is still no mention of this problem. Right now him and I are at the stage where I did a complete restore back to 10.8 and used it for a day as a blank and new machine (issue did not occur with 10.8). Today I upgraded to 10.9.1 and the issue has returned. I have not used migration assistant or loaded any of my programs or files so this is definitely a 10.9 issue.

I meet back with him on monday where he will probably just have me load my stuff back and go on my merry way because I don't see a fix happening for this. But for anyone that gets a blank gray screen when they wake their comp up, try typing in your password and hit enter and see if that works. At least now I know that it is not frozen and I can still get back into the machine.

Update:

Tried it with 2 user accounts now too, and I held my fingers over where the icons would be. Woke it up after sleep, clicked on the empty light gray screen where the 2nd user icon would be, typed in the password and voila, into the second account. So it really seems as if the light gray screen is a veil over the dark gray login screen.

However I know different people are getting different screens and even I myself ended up getting the real login screen one time but with the rotating rainbow wheel of death that never stopped spinning, so had to manually restart. Wish my investigation could help someone at apple figure this out, but regardless if we can't pinpoint it, there is a problem with this freakin page so fix it Apple! ha.

Thank you. The step by step instructions for resetting the SMC helped my nonresponsive Silver Screen on a Lion OS. Also it made my screen much brighter.

SCSilverfox

No progress on this issue recently. I'm wondering if the sleeping problem is a sign of something deeper in the file system. I've noticed that the iMac freezes quite regularly when using Excel (and saving files) which it did not do pre OS-X Mavericks. All of the suggested fixes offered have been temporary, but I've yet to try a full, clean install.

I noticed that Power Nap is now the first topic in the Apple iMac support pages which may be some reflection on this issue becoming recognised?

Sad to report that my mac was still bright light screen of nothing. The default settings did nothing. Loading of a 3rd party app for screen saver did nothing. Ran hardware test of course. I'm reaching the point that there is no solution void of No Maverick. There is clearly some common path, the afflicted, have all had/have. I'm operating from the idea that I need to shutdown my computer at night until there is a fix or update. I have tried everything I can come up with void of loading scripts into Terminal.

I apologize for the confusion I created. My Thank You was for the SMC reset instructions above because it helped my problem.

My problem was not the same as the problem being discussed here though. I have a OS Lion and my computer quit responding to my mouse and keyboard. I shut the computer down by pressing on the Power Button for several seconds. After a few times of doing that a silver screen came up that also did not respond to mouse or keyboard.

I reset the PRAM four times because I read that was the cure. That didn't help. After trying to find out more through Google, I found this page, used the steps to reset the SMC and - like magic, my computer started again normally. I just wanted to thank the person for posting those steps.

I won't download Maverick until it is more stable. I shut my computer down every night though because it does not stay asleep once it goes into sleep mode and I don't like it to pop open at all odd hours of the night. Haven't found a cure for that except to Shut Down.

I joined this discussion Nov 3rd trying to figure out the No wake issue. I tryed everything suggested with temporary fixes at times.

On Dec 21st I installed the 10.9.1 update and the problem went away completely for me. My late 2009 imac continues to work correctly on the default energy saver settings on 10.9.1.

It seems other peoples problems began with 10.9.1? I continue to follow this discussion because I am uncertain my fix will last.

I have all microsoft office productivity software working well.

I have all Apple productivity software working well.

I have Aperture software with many plug-ins and x-rite display calibrator all working well.

I will mess with Excel creating and saving files to see if it causes any issues as AW1960 suspects it might.

Same problem here with my Mac mini. Unfortunately I installed a SSD, upgraded to Mavericks and installed 16GB (2x8) Ram modules all simultaneously. So the problem could not be referred to a special action.

The Mini awake well after 2-3 hours, but trying to wake it up overnight, I got a Kernel panic.

After testing different sleep intervals, I found, that the wakening problems only occur if the Mac is in sleep mode for longer than my "autopoweroffdelay". In my case 14400 sec or 4 hours. After that time the machine seems to write data into the sleepimage, which exists even in hibernatemode "0". After deleting the sleepimage, it will return after each reboot with exactly 2GB.

So I changed my 16GB Ram back to original 4GB and the wake issue is gone (for the moment)!! In my opinion, the wake problem is possibly caused by the sleepimage, which seems to be created permanent under Mavericks. Will now test another RAM manufacturer and if the problem appears again with another 16GB, I`ll try the

- sudo touch /private/var/vm/sleepimage

- sudo chflags uchg /private/var/vm/sleepimage

commands.

As we are now ALL trying to figure out just what Maverick's problem is, let's see if we are smart enough to figure it out...

16 GB Memory - Added memory -- My Mac Mini came with 4 GB Ram. I upgraded to 16 GB Memory manufactured by "Crucial." (I kind of suspect/doubt that this is the problem as my son has a Mac MINI also and he is using the same 16 GB of Crucial Memory purchased at the same time as the 2 sticks that are in my Mac Mini. No sleep wake issues at all. He is also working from the upgrade, not a fresh install. One difference is his is a year older than mine and an intel i5. Mine is an i7)

1 TB hard drive - Apple HDD HTS541010A9E662

Intel Core i7

Adobe Photoshop Elements

Firefox 25.1

MS Office 2011

Mavericks install - same issue from upgrade and now from fresh reformatted HD install

All other software is pretty much games downloaded through the APP store.

I will list games if list of other software above is not helpful.

Ooops. I just got back from a weekend out of town. Just noticed yeabud2's post from 1/11/14.

That seems to point to a possible hardware conflict with Mavericks? Not software.

He ran as OS 10.8 with no wake issues, went back to 10.9, ran it without installing ANY software in addidtion to the OS... CaBadaBing... wake issues again!

O.K. Apple... a little help here. How about ecknowledging the problem exsists as well.