Waking Mac up from "sleep"

iMac successfully goes to "sleep" pursuant to preferences set. However, whenever I return and touch a key or click the mouse, iMac starts to awaken then shuts down leaving me with a message that I need to restart the computer. Is there a prescribed way to awaken the computer from "sleep" mode that I'm not aware of?

You experienced a phenomenon known as a kernel panic. This might be a hardware issue (especially with Intel Macs) so try Apple Hardware Test (run from the installation disc for Mac OS X that reads something like "To startup in Apple Hardware Test, hold down [key] when you start your computer" or something like that) and note the results here.

Similar Messages

I have a new I Mac running mountain lion. When waking the computer from sleep, all I get is a blue screen. I have to restart the computer.

I have a new I Mac running lion 10.7. When waking the computer from sleep, all I get is a blue screen. I have to restart the computer.

Did you not bring all your important data over from your old computer? Do you have a backup of the iTunes library that you can restore? If not, then its not to late, just more work that it should be.
You should be able to:
Backup the device to the new installation
Transfer your purchases into a newly authorized library
Recover any other media using third party tools as suggested in this post from forum regular Zevoneer
Restore the device from the backup
This process should switch the association of the device to the new library, preserving the data and settings in your apps.
May also be prudent to attempt a backup to iCloud directly from the device before you start... Settings > iCloud > Storage & Backup > iCloud Backup > On. It won't save any media but it would preserve the general account settings and documents in case anything goes wrong while you are trying to extract your other data.
When you get it all fixed, make a backup!
tt2

My mac wakes from sleep on its own?

Hi all, for some reason my mac wakes from sleep overnight, not quite sure at which time it does this but I have found the computer awake and up and running in the morning for a few days now?
any ideas why it would wake itself up?
cheers, Robert
G4 MDD dual 1.25Ghz, Tiger 10.4.10

98% likely one of your USB devices is waking it up. Do you have a USB hub attached or a bunch of USB devices (drives, other doodads) attached? The console tip above may help tell you which one it is

I have a password problem. After importing data and settings from one MacBook Pro to a new one, I have to put my iCloud password in when re-starting, but the password from the old computer in when waking the computer from sleep.

I have a password problem. After importing data and settings from one MacBook Pro to a new one, I have to put my iCloud password in when re-starting the new computer, but the password from the old computer in when waking the computer from sleep. I want to use my iCloud password on both computers consistently. How can I fix this?

The only other place to change a password for the computer login is in Users & Groups preferences. But I don't really know enough here to fix your problem. You can try fixing the keychain:
iCloud- Frequently asked questions about iCloud Keychain
Tutorial: Resolving Keychain Issues
If you can't access your keychain, or forget your password If you can't get into your keychain file because you've forgotten your password or the keychain file appears to be corrupt, there are a couple of options.
First, if you've forgotten your password, you can use the "Keychain First Aid" utility to make the keychain password the same as the login password. This can be accomplished via the following process:
1. Open Keychain Access (located in Applications/Utilities)
2. Go to the "Keychain Access" menu and select "Preferences"
3. Click the "First Aid" tab
4. Make sure the "Synchronize login keychain password" box is checked
5. Close the Preferences window
6. Go to the "Keychain Access" menu and select "Keychain First Aid"
7. Enter your username and password
8. Click the "Repair" button
The second option is to completely delete your keychain then recreate it. This routine is useful if your keychain appears to be corrupt or otherwise inaccessible. This can be accomplished as follows:
1. Launch Keychain Access (located in Applications/Utilities)
2. Click "Show Keychains" in the lower-left corner of the window.
3. Select the problematic keychain from the left-hand pane.
4. Navigate to the "File" menu and select "Delete Keychain '(name of keychain)'"
5. Check all options for deletion and press "OK"
6. Create a new keychain by going to the "File" menu, then "New" and selecting
"New Keychain"
7. You can now make this keychain your default if you desire by selecting it, then
going to the "File" menu and selecting "Make '(name of keychain)' Default"
Login as root and perform repair In some cases, problems with keychains can only be resolved when logged in as the root user.
First, you want to enable the root user:
1. OS X Mountain Lion: Enable and disable the root user
2. OS X Lion: Enable and disable the root user
3. Mac OS X 10.6: Enabling the root user
4. Enabling and using the "root" user in Mac OS X
After enabling the root user, and logging in under this account, again open Keychain Access. First attempt repairs using Keychain First Aid, and failing that, delete then recreate the keychain as described above while logged in as root.
Persistently asked for stored passwords If you are persistently asked for passwords in various applications that you have specified should be remembered in a keychain, your "login" keychain may not be active for one reason or another.
Navigate to ~/Library/Keychains/ (this is the Library folder inside your user's home folder). Find the file named "login.keychain" and double-click it.
Failing that, select the "login" keychain within the Keychain Access application and make sure it is the default keychain by going to the "File" menu and selecting "Make 'Login' Default"
Turn off Keychain synchronization in applications having problems If specific applications are experiencing issues when accessing password-protected material, the Keychain may be to blame.
The above comes from an article published on MacFixit.com.

Aluminum Keyboard won't wake Mac mini from sleep (sometimes)

I just bought the new aluminum keyboard (wired). Its great, and looks amazing next to my mac mini......except it won't wake mac mini from sleep sometimes. When this occurs, I can tap on any key but the machine won't wake up. The only work around I have is to attach my ipod, which wakes the mini. Oddly this only happens sometimes. I can't isolate any other variable which may be influencing this behavior.
I'm running leopard and didn't think I needed to install the 1.2 keyboard software update.
I called Apple support, and they told me the problem is that I'm using a non-apple mouse (I have a microsoft optical wired mouse connected to the keyboard's USB port). I don't believe them as i've used this mouse connected to my previous Apple keyboard for years and never had a problem.
Can anyone help?

Regrettably, I can't offer a solution to the problem stated in the title. Instead, I experience the same problem.
Wireless Mighty Mouse circa 2007
Wireless Apple Keyboard circa 2007
Bluetooth dongle (a bluetooth thingy connected to a USB port)
Things worked fine until an upgrade from Tiger to Snow Leopard. Following the upgrade there were several mouse related issues. Those were resolved. One issue remains: waking by use of mouse or keyboard.
The setup (Same for keyboard and mouse)
System Preferences --- Bluetooth --- Keyboard Connected --- Keyboard Paired. The "Discoverable" box is checked.
Digging deeper
System Preferences --- Bluetooth --- Advanced --- "Allow Bluetooth device to wake this computer" --- This option is unchecked and is greyed out, inaccessible. Two of the other options are checked and available: the options about opening the Bluetooth assistant and the one about prompting incoming audio.
I've searched other posts. However, many of the other posts seem to conflate this Wake/Sleep issue with various connection issues. Thus, the advice given is a bit confusing to this amateur. Might one of you experts have a solution to this annoying little problem?
Thanks for your interest.
Lxloco

I upgraded to Mountain Lion.Now I have trouble waking it up from sleep mode. Why?

I upgraded to Mountain Lion on my MacBook. I am now having trouble waking it up from sleep mode. Does anyone know why or how to wake it up. I try tapping the space bar, trackpad & other keys. Sometimes I think it's never going to wake up.

I'm not certain but my new MBA 13...when in sleep mode comes back on from a black screen when I simply click on the left mouse button. Also, one time I did a SECURE EMPTY TRASH on files that totalled more than 1GB and it took so long that the fan kept increasing in speed so I pressed on the POWER button and the MBA shut...I was able to boot up with no problem. As a rule, I now only do secured erases for trash bin data totalling 500mb or less...anything above that gets a regular erase (dump).

Imac waking itself up from sleep mode

i am very concerned about my imac it keeps waking itself up from sleep mode. i checked the prefrences and its not scheduled to wake itself up, do i have a virus?

OK jon,
We stil don't know exactly which iMac CRT you have but this is based on the 350 - 400 Slot loader and is from the service manual:
"Resetting the PMU on the Logic Board
Resetting the PMU (Power Management Unit) on the logic board
can resolve many system problems. Whenever you have a unit that
fails to power up, you should follow this procedure before
replacing any modules.
1. Disconnect the power cord and check the battery in the battery
holder (BT1). The battery should read 3.3 to 3.7 volts.
If the battery is bad, replace the battery, wait ten seconds,
and then reset the PMU (refer to the next step). If the battery
is good, go to the next step.
2. Press the PMU reset switch (S1) once on the logic board and
then proceed to step 3. Do NOT press the PMU reset switch a
second time because it could crash the PMU chip.
3. WAIT ten seconds before connecting the power cord and powering
the computer on. If the computer powers on, go to the
next step. If the computer does not power on, there is something
else wrong with the computer, refer to the symptom/
cure chart, “No Power” in this chapter."
Richard

Not detecting external display after waking up MBP from sleep mode

I am a recent owner of a MBP and enjoying it. However, one problem that I can't seem to find a solution to is the external display problem after sleep mode.
When I first boot up the Mac and plug in my Dell external monitor via the mini adapter, there is no problem with detection or display. However, every time I put the MBP in sleep mode and then wake it up again, the external monitor does not "wake" up and my MBP only displays my normal screen on the Mac.
I tried to 'Detect Displays' to no avail and the only solution is unplugging the mini connection and plugging it back into the MBP for the MBP to re-detect the external monitor.
Although this is a quick fix in itself, I do not want to wear out the mini port by doing this every timeI come out of sleep mode. Any solutions so that the external monitor will detect the MBP waking up from sleep and display properly? Thanks!

And same problem here.
Using a MBP 2.66 i7 with a Dell 3008WFP that's connected to the MBP through DisplayPort. It works some of the time but once in a while (only been using the new MBP for a couple of days now) the monitor won't come out of sleep mode. Turning it off/on causes OS X to completely ignore the monitor. I was able to get this setup to work again by pressing 'Detect Displays' in the System Preferences pane but most of the times that doesn't help. The only sure way to get the monitor working again is by booting into Windows through Bootcamp, Windows is able to use the monitor, if I reboot after that OS X sees the monitor again.
Also saw a magenta line/stripe on the left side of my monitor and the monitor sometimes makes a buzzing sound when connected to the MBP through DisplayPort. That's what you get by using bleeding edge tech I guess :\ Only alternative is buying the mini-DP to dual-DVI connector but paying $99 just to be able to use an external monitor is rather insane. Besides that lots of users are having problems with this adapter.

My imac has a gray screen when waking it up from sleep mode. about 9 months ago, I installed OS X Maverick.

This is the second time this has happened, since installing OS X (9 mos. ago). (I can't recall the fix from the last incident.) Upon waking the pc up from sleep mode, I get a gray screen. Nothing works except using the Command and P & R keys to get to "reinstalling OS X", to no avail. What do I need to do to get it back to normal?
My imac is a 21.5", mid 2011 item.

Those keys do not reinstall OS X. To do that:
Reinstall Lion, Mountain Lion, or Mavericks without erasing drive
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu.
Reinstall Mountain Lion or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.
COMMAND-OPTION-P-R keys resets the PRAM. OS X keyboard shortcuts.

Problems connecting to Monitor after waking up MacBook from sleep

Hi,
I am experiencing a lot of problems connecting my macbook pro to external monitor once I put it to sleep. I have tried every options like setting up PRAM and all, but it just wont work. Sometimes the restart works and sometimes it wont. I am using a Samsung monitor. I have no idea what to do, as I keep on clicking Detect displays and it just wont do anything. Can anybody please help me as to how I can wake up my macbook from sleep and get it connected to the monitor. I have a mac keyboard and bluetooth mouse, but neither would wake the mac. I have change my bluetooth settings so that the mouse should be able to wake it up..

William Rivas wrote:
William Rivas wrote:
William Rivas wrote:
Linc Davis wrote:
Test after taking each of the following steps that you haven't already tried. Back up all data before making any changes.
1. Make sure the network is on the preferred list by following these instructions. It's important to read the article carefully, as it's the starting point for any further efforts to solve the problem. If you skip any of the steps, the problem may not be solved. Make sure the box marked
Remember networks this computer has joined
is checked.
2. Follow the instructions in this support article under the heading "Symptom: The network connection drops unexpectedly."
3. Make a note of all your settings for Wi-Fi in the Network preference pane, then delete the connection from the connection list and recreate it with the same settings. You do this by clicking the plus-sign icon below the connection list, and selecting Wi-Fi as the interface in the sheet that opens. Select Join other network from the Network Name menu, then select your network. Enter the password when prompted and save it in the keychain.
4. From the Location menu at the top of the Network preference pane, select Edit Locations. A sheet will drop down. Click the plus-sign button to create a new location. Give it any name you want. In the new location, set up the Wi-Fi service with the same settings you used before. Click Apply and test.
5. Launch the Keychain Access application. Search for and delete all AirPort network password items that refer to the network. Make a note of the password first.
6. Repair permissions on the startup volume.
7. Turn off Bluetooth and test.
8. Reset the System Management Controller.
9. Reset the PRAM.
10. Reinstall OS X.
Updating to 10.9.2 did the trick. So I thought. Does anyone have a solution?
Thanks!

IPod 4G always mounts for disk use when Mac wakes from sleep

My 4G iPod is always mounting for disk use when my Mac (10.4.8, Dual 1.8 GHz G5) wakes from sleep, even though the settings for the iPod has "enable disk use" unselected. When I launch iTunes (latest version) the iPod promptly is unmounted. I have restored factory settings, I have reinstalled the computer's OS and iTunes with it.
What is going on and how can I make it normal?
Dual 1.8 GHz G5 Mac OS X (10.4.8) iTunes 7.1, iPod 4G 20GB

UPDATE:
I have started to turn off Bluetooth at night before I put my computer to sleep. I HAVE NOT HAD THE FIREWIRE RANDOM DISMOUNT PROBLEM SINCE. I do not know if this is a freak coincidence -- but so far, so much the better for my firewire drive.
Hope this helps someone else down the line... eh hem...

IMac with waking up randomly from sleep mode

Hello everybody!
Since I installed Snow Leopard (all updates done) my iMac is randomly waking up from sleep mode without any reason that I know of. Some days everything is fine, next day it wakes up when I am at work and retrieves mails (thats how I see it is awake).
Also I set it up to shut down after 1h idle time- this does not work as well.
Any ideas how to track the problem?

re:
Just happened again.
My activity monitor:
123 AirPort Base Station Agent 0,0 3 856 kB
2974 Aktivitetsmonitor 8,6 6 20,2 MB
293 AppleSpell.service 0,0 2 5,8 MB
105 Dock 0,0 3 10,0 MB
107 Finder 0,0 6 35,8 MB
109 fontd 0,0 3 5,0 MB
129 GeekTool 0,9 4 3,6 MB
188 GrowlHelperApp 0,0 3 10,3 MB
127 iTunesHelper 0,0 3 1,5 MB
99 launchd 0,0 2 836 kB
29 loginwindow 16,5 2 7,5 MB
152 Mail 0,0 7 60,3 MB
2977 mdworker bjarne 0,0 3 3,2 MB
110 pboard 0,0 1 488 kB
128 Quicksilver 0,0 3 19,6 MB
154 Safari 0,0 9 207,1 MB
2985 snmpInk 0,0 3 1,8 MB
106 SystemUIServer 0,3 4 19,8 MB
117 UserEventAgent 0,0 3 3,3 MB
239 WebKitPluginAgent 0,0 2 696 kB

When the mac wakes from sleep, the wireless icon disappears

Hi All, I have a third party wireless PCI card in the PowerMac G4 MDD which works fantastically. The only issue I have is when the machine wakes from sleep, the wireless icon disappears from the top menu and the machine freezes and I have to force shut down.....
Any ideas?
I am running 10.5.8....

Hi, Garry -
It seems some PCI cards don't handle sleep well; sometimes they exhibit behavior such as you've noted, sometimes they just prevent the machine from entering sleep.
In many cases the solution can be to sleep only the monitor; in the Sleep prefs pane, set the sliders for System and Hard Drive to "never", and the one for the monitor to your choice of delay. This arrangement also means waking from sleep is faster.

Back to my mac. wake from sleep.

is it possible to wake a remote computer from sleep.

Within my airport network using Wake on Lan I can wake my cube (OS 10.4) which is connected by ethernet to a remote airport extreme but when I try to do the same with my mac mini the airport is recognised but not the computer. Looks like a glitch in WoL preventing this ay least with the settings I have tried so far. I can however wake it with Wake 550 with the ethernet card address.
So, at least within a home network I can wake macs on 10.4 and 10.5. Not tried it from outside yet.

Mac crashing from sleep since 10.8.5

Since updating to 10.8.5 my imac has been crashing from sleep. The past 2 nights I put my imac to sleep and when I wake up in the morning the computer is already awake before me with an error saying "unable to load disc" or something like that. I have to get it to reproduce it again so I can share the exact error. Anyone else having this issue?
This is happening on my new late 2012 imac fully loaded. 32gb ram, 3.4ghz i7, 3tb fusion, 680mx graphics 2gb

I don't have this issue, which is strange because usually when Apple software sneezes, my computer gets the flu. I'm using a MacBook Pro though so maybe the issue only affects desktops - I've seen a few posts on forums regarding other iMacs and Mac minis. My guess is, that this is a glitch in the software causing a power issue. You can try resetting your SMC (System Management Controller), which is usually a quick fix to power issues - but my guess is that Apple will adress this issue shortly. Resetting your PRAM may also help, if the issue is non-power related.
Instructions on resetting your SMC can be found here: http://support.apple.com/kb/ht3964
Instructions on resetting your PRAM can be found here: http://support.apple.com/kb/HT1379
Regards,
Hugh
Message was edited by: Hugh Grest

Waking Mac up from "sleep"

Similar Messages

Maybe you are looking for