IMac won't completely wake up after sleep.

I have to awken iMac from sleep mode by hiting the power button because even after the screen comes back, the bluetooth keyboard, mouse, and track pad won't reconnect. I have to turn coputer off and back on to get them working again. I ran verify, and it found no problems. I'm running Lion. Any suggestions on what's causing this?

If you have the iMac plugged in to an old or crowded power strip, as a test, connect it directly to a wall outlet to see of that makes any difference.
Peripheral devices (USB/FireWire) devices can interfere with sleep, wake, shutdown, and startup. Try going through the SMC reset procedure, as shown here (procedure recently changed by Apple)
http://support.apple.com/kb/HT3964
and disconnect ALL cables. Power up with nothing connected except for the power cord. Connect just your keyboard and mouse, then doing sleep and wake.
Also, make sure the batteries in the Magic Mouse are not getting low. You should try removing them for a few minutes and then putting them back. You should also try re-pairing the mouse at System Preferences Mouse pane +Set Up Bluetooth Mouse+ button.

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IMac won't always wake up after Magic Mouse installed.

I have a 24" iMac and just bought a Magic Mouse. I am running 10.6.1. I WAS running 10.6.2, but had problems getting the iMac to wake from sleep ever since I installed the Magic Mouse. I reverted back to 10.6, and updated to 10.6.1 to get the new MM update installed.
It seems that if it is asleep for an hour or so, it won't wake up. I end up having to reboot. I have tried the setting to allow Bluetooth to wake the computer both ON and OFF. I have reset SMC, and PRAM. I'm thinking it may be a software issue, but I am at my wits end.
Has anyone found a cure for this?
Thanks!

If you have the iMac plugged in to an old or crowded power strip, as a test, connect it directly to a wall outlet to see of that makes any difference.
Peripheral devices (USB/FireWire) devices can interfere with sleep, wake, shutdown, and startup. Try going through the SMC reset procedure, as shown here (procedure recently changed by Apple)
http://support.apple.com/kb/HT3964
and disconnect ALL cables. Power up with nothing connected except for the power cord. Connect just your keyboard and mouse, then doing sleep and wake.
Also, make sure the batteries in the Magic Mouse are not getting low. You should try removing them for a few minutes and then putting them back. You should also try re-pairing the mouse at System Preferences Mouse pane +Set Up Bluetooth Mouse+ button.

I5 iMac won't complete shut down after installing Lion

When I try to shut down my iMac it gest as far as the white screen with the spinning wheel. It never completes the shut down. I always have to force quit it by holding down the power key. Any suggestions?

I have the same issue was fine after 10.7 install but happend straight after 10.7.1. I have reset PRAM NVRAM and reset SMC, I have also been to the genious bar where they did an erase and install of lion, it then closed down six times and has now stopped closing down again. I can't think of any other option i'm sure that it must be something in 10.7.1 so will wait for 10.7.2 with my fingers crossed. Any other thoughts out there?

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Thank you everyone. The correct answer was a kernel panic, and although the resolve kernel panic links above did not offer a successful solution, it was a correct diagnosis. Following the Apple Troubleshooting steps allowed me to determine that a faulty third party keyboard was the cause. Restarting with shift, restarting with 'x,' and restarting with ctrl-option-r-p did not solve the issue. Unplugging the keyboard and restarting did identify the keyboard as the culprit. Thank you all for your help.

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Is the iPod or the laptop going to sleep?
I can't tell for sure from your post.
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i just recently purchase a pair 16GB RAM of crucial CT2K8G3S160BM for newegg.com. Yeesterday i try put this on my macbook i7 intel 2.9 processor that crucial said is compatible. but found out everything was good until i close my mac lid for hibernate. What happen is, it won't wake up no matter what i do until a way of reset SMC. BTW i try stick by stick to plug in together with my original 4gb RAM together found out 1 was ok and other one was not. But somehow why the info of hardware show that memory ram 16GB was installed and was OK. Everything was run smooth even booting. The only problem is won't wake up after sleep mode. I already try reset smc, pram, delete startimage, delete powermanagement.file and also sudo hibernate 0-7. Did anyone had this same issue of me. I'm my curiousity will it be the bad ram or software problem.

i just google around and found this two both crucial ram. Both spec are the same but different model no.
CT102464BF160B 16GB and mine is CT2K8G3S160BM are this 2 same? but both same spec.
http://www.bhphotovideo.com/c/product/877010-REG/Crucial_Technology_CT102464BF16 0B_16GB_2_x.html
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My Macbook Air 13" 2011 won't wake up after sleep. I've taken it to apple genies bar, but they offered to replace my logical board!
I bought the Macbook Air in last August. Why cannot they replace a new laptop???

One thing you want to do is "Repair Permissions" in Disk Utility before you upgrade to a new revision, and afterward do the same thing.
On occasion files will become inaccessible to the logged-in user and cause certain components of the OS from acting cooperatively. This can most often happen during/after an update. Also, by resetting permissions before an update, it is to ensure that the update process itself can accomplish all tasks.
You may also want to consider applying/re-applying the downloaded 10.7.3 "Combo Update" from the Apple.com/downloads/ section. After resetting permissions, of course.

Mac Mini 2014 Oct cannot wake up after sleep

Mac Mini 2014 Oct Version, cannot wake up after sleep by typing on keyboard or moving mouse (both hardwired USB) if external HDMI screen goes to sleep mode too (usually after 1 min if no signal coming from the MAC). To wake up, I ust turn off and turn on the screen and keep typing on the keyboard. I already checked "prevent computer from sleeping if display goes to sleep". But does not help. This is very annoying. I now try to set the sleep timer to more than 1 hour. Wasting my energy and not helping. I tried connecting my HDMI screen to a HDMI to mini-Display port adaptor cable, then plug into the thunderbolt port of the MAC. Same issue, no improvement.

I may know whats going on with the wake from sleep issue. I have a Mac Mini 2012 but this fix (see below) should work on any product running 10.8.2 Mine is at 10.10.1 and it worked.   First off you can tell if your Mac Mini is in sleep mode by looking at the small light on the front of the Mini. If its pulsing... going from bright to dim its in sleep mode. If you put your Mac in sleep mode, or it goes into sleep mode it will wake from sleep BUT ONLY for the first 4 hours. After 4 hours it will go into what is known as "safe sleep". The light on the front will be off and you won't be able to wake your Mac. The only way to wake the Mac when in safe sleep is to hit the power button and then wait a minute or longer as your system will need to pull the data from the disk and load to ram. This is causing the issue where its not waking from sleep. You can move your mouse or hit the keys all you want but it won't wake from sleep. This is a real pain as you have to press the power button on the back of the Mac mini and wait for the system to come out of its slumber.   Here's what Apple says:
With the release of the OS X Mountain Lion v10.8.2 supplemental update 2.0, a new feature was introduced to enter safe sleep after four hours of the computer being connected to AC power. This is an effort to comply with the European Energy Standards (ErP Lot6). This will only occur if there is no wireless or Ethernet activity and no activity from external devices such as USB storage devices. This is normal behavior for the following models:
MacBook Pro (Mid 2012 and later)
MacBook Pro (Retina, Mid 2012 and later)
MacBook Air (Mid 2012 and later)
iMac (Late 2012 and later)
Mac mini (Late 2012 and later)
I have found a fix that puts an end to this nonsense..... Go to the Mac terminal (Google if you don't know how or youtube) and run the following commands (Very easy to do and if a novice like my self can do you can for sure)
1. When in the terminal mode type:
pmset -g          This will show your current configuration of your sleep, hibernate, etc You may want to print so you can restore these values if needed.
2. Change your standbydelay to 86400    86400 is number of seconds which is 24 hours. Here’s the command:
sudo pmset -a standbydelay 86400
3. Change autopoweroffdelay to 86400 Here’s the command:
sudo pmset -a autopoweroffdelay 86400
4. At last but not least change autopoweroff to 0   Here’s the command:
sudo pmset -a autopoweroff 0
Run pmset -g to verify your setting have changed. I rebooted my system and checked again to make sure. Since I made the changes no more going into Safe sleep!!! You can change the values to what you like. I used 86400 secs. (24 hours) I hope this helps!

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Hello, I have a Mac Book Pro and have the same problem, I close the lid, I have tried every possible thing I have read, and the problem is still here.
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I had downloaded and then installed Flash, and restarted.
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Hi,
My MacBook Air(Mid 2012) can't wake up after sleep. I recently updated operation system to Mac OS X Mavericks and now after sleep mode screen goes black and nothing happens after this. Only thing that I could do is hard reboot by pressing power button and boot again. Do anyone have the same issue and suggestions how to fix this?
Thanks in advance
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Same thing here. MBA 2011 working perfectly until I updated to Mavericks.
It often doesn't wake up fully. It does draw the password input box but there's no text cursor and no input is possible. The mouse cursor is not visible either. Waiting does nothing (tried ~15 minutes, no change). Closing the lid does not put the laptop back to sleep, it's fully frozen and the only way out is a reboot by holding the power button.

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Hibernation seems to be working fine. I had to change all that will make my computer enter sleep mode to hibernate. But I would like to get that fixed. I read something about the bios and my version is "BIOS Version: V1.40. 12/04/09.

Qosmio X505-SP8915R
The BIOS is up to v2.2 now. It's possible that will help.
ACPI Flash BIOS version 2.20 for Qosmio X505 (PQX33U)
See the long thread containing Jim's message.
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IMac screen will not come on after sleep

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I know that some of the older imacs had overheating problems that caused unexpected sleep. try to keep the display darker and keep the room not too hot. That seems to usually solve the issue.

I have a MacBookPro with Yosemite and Safari won't recognize the router after sleep unless I restart the computer.

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See
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Removing and Reinstalling iTunes, QuickTime, and other software components for Windows XP
or
Removing and reinstalling iTunes and other software components for Windows Vista, Windows 7, or Windows 8
However, after your remove the Apple software components also remove the iCloud Control Panel via Windows Programs and Featurs appin the Window Control Panel. Then reinstall all the Apple software components
- New cable and different USB port
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My macbook pro doesn't wake up after sleep

my macbook pro doesn't wake up after sleep

I'm having the same issue. I've had my logic board replaced twice now, which I did last week and then Monday I had to take it to a Genius Bar again because my hard drive cable was malfunctioning. I don't know why it's happening but I'm really starting to get frustrated with my machine. I bought my MacBook Pro brand new last year in September and ever since I've dropped it in November, it's been really glitchy. After I dropped it, I had to replace my Logic board, graphics card, and hard drive and they covered it.

IMac won't completely wake up after sleep.

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