Can't sleep

Hey there,
I can't get my imac to go to sleep and i don't know why. When i go to apple menu and press sleep nothing happens.
Can anyone help me with this.
Thanks

Hi there,
I experienced the same thing for a brief period after the update. I found that the Energy Saver Preferences were not being saved or somehow changed.
I suggest to check your settings, make sure you do this for a few days, run disk permissions, and as David suggested reset the SMC OR SMU, whichever applies to your particular machine.
You can also think about using the Combo Update, there have been many post re: problems solved after running the update...
Rick
iMac G5 iSight 20" - 30G iPOD in Slimming Black -   Mac OS X (10.4.7)   - HP Pav 15" WS and Toshiba Sat 17" WS LP's - Canon 20D & A620

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    First of all, the value “1” in “PreventUserIdleSystemSleep” is nothing special. It's only a problem, if a process keeps this "flag" set continually, as I showed in a previous example. The "thingy" preventing sleep, was the value “1” in “PreventUserIdleSystemSleep”, but the originator of this flag was (most of the time) a contacts sync process repeated each 30 seconds (when sync to iCloud was NOT enabled). Here’s a “cut” from my “power” log (pmset -g log) as an example of one of many cases for the value “1” in “PreventUserIdleSystemSleep”, that is totally acceptable and normal:
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    15/07/14 12.52.51 CEST   Showing all currently held IOKit power assertions
    Assertion status system-wide:
       BackgroundTask                 1
       PreventDiskIdle                0
       ApplePushServiceTask           0
       UserIsActive                   1
       PreventUserIdleDisplaySleep    0
       InteractivePushServiceTask     0
       PreventSystemSleep             0
       ExternalMedia                  1
       PreventUserIdleSystemSleep     1
       NetworkClientActive            0
    Listed by owning process:
    *  pid 1771(backupd): [0x00000001000006c7] 00:01:55 PreventUserIdleSystemSleep named: "Time Machine backup"
       pid 1771(backupd): [0x0000000c000006c6] 00:01:55 BackgroundTask named: "Time Machine backup"
       pid 84(hidd): [0x0000000a000006b9] 00:03:33 UserIsActive named: "com.apple.iohideventsystem.queue.tickle"
        Timeout will fire in 592 secs Action=TimeoutActionRelease
    *  pid 1609(ChronoSync): [0x00000001000005f3] 00:56:15 PreventUserIdleSystemSleep named: "<EZSSynchronizer: 0x1040ac400>"
       pid 16(powerd): [0x000000090000012c] 17:18:47 ExternalMedia named: "com.apple.powermanagement.externalmediamounted"
       pid 11(UserEventAgent): [0x0000000c000006d1] 00:00:15 BackgroundTask named: "com.apple.metadata.mds_stores.power"
       pid 11(UserEventAgent): [0x0000000c000006c3] 00:02:26 BackgroundTask named: "com.apple.backupd-auto"
       pid 137(mds_stores): [0x0000000c000006d0] 00:00:15 BackgroundTask named: "com.apple.metadata.mds_stores.power"
    Kernel Assertions: 0x2c=USB,BT-HID,THNDR
       id=500  level=255 0x4=USB mod=14/07/14 19.41 description=XHC1 owner=AppleUSBXHCI
       id=503  level=255 0x20=THNDR mod=15/07/14 11.53 description=NHI0 owner=AppleThunderboltHAL
       id=504  level=255 0x8=BT-HID mod=01/01/70 01.00 description=com.apple.driver.IOBluetoothHIDDriver owner=BNBMouseDevice
       id=505  level=255 0x8=BT-HID mod=01/01/70 01.00 description=com.apple.driver.IOBluetoothHIDDriver owner=AppleBluetoothHIDKeyboard
    From this, you can see, that there are TWO tasks, that prevent sleep. One is “Time Machine Backup” and the other my “ChronoSync” application, which is currently performing a sync operation to a NAS connected through Ethernet. Both operations (marked * above) should be left to complete their work, before my macbook goes to sleep. At least, that’s the common wisdom. Even if it wasn’t so, I’d personally prefer things to behave that way.
    The important thing is this state, taken a bit later:
    Total Sleep/Wakes since boot at 14/07/14 19.34.03 CEST   :11
    15/07/14 13.05.17 CEST   Showing all currently held IOKit power assertions
    Assertion status system-wide:
       BackgroundTask                 0
       PreventDiskIdle                0
       ApplePushServiceTask           0
       UserIsActive                   1
       PreventUserIdleDisplaySleep    0
       InteractivePushServiceTask     0
       PreventSystemSleep             0
       ExternalMedia                  1
       PreventUserIdleSystemSleep     1
       NetworkClientActive            0
    Listed by owning process:
       pid 84(hidd): [0x0000000a000006b9] 00:15:59 UserIsActive named: "com.apple.iohideventsystem.queue.tickle"
      Timeout will fire in 583 secs Action=TimeoutActionRelease
    *  pid 1609(ChronoSync): [0x00000001000005f3] 01:08:41 PreventUserIdleSystemSleep named: "<EZSSynchronizer: 0x1040ac400>"
       pid 16(powerd): [0x000000090000012c] 17:31:13 ExternalMedia named: "com.apple.powermanagement.externalmediamounted"
    Kernel Assertions: 0x2c=USB,BT-HID,THNDR
       id=500  level=255 0x4=USB mod=14/07/14 19.41 description=XHC1 owner=AppleUSBXHCI
       id=503  level=255 0x20=THNDR mod=15/07/14 11.53 description=NHI0 owner=AppleThunderboltHAL
       id=504  level=255 0x8=BT-HID mod=01/01/70 01.00 description=com.apple.driver.IOBluetoothHIDDriver owner=BNBMouseDevice
       id=505  level=255 0x8=BT-HID mod=01/01/70 01.00 description=com.apple.driver.IOBluetoothHIDDriver owner=AppleBluetoothHIDKeyboard
    Now it’s only my active sync process (marked * above), that prevents the notebook from going to sleep. Time Machine Backup has terminated, and no longer prevents my computer from sleeping. After some intensive work, the system even settles down to this:
    15/07/14 14.32.26 CEST  
    Assertion status system-wide:
       BackgroundTask                 0
       PreventDiskIdle                0
       ApplePushServiceTask           0
       UserIsActive                   1
       PreventUserIdleDisplaySleep    0
       InteractivePushServiceTask     0
       PreventSystemSleep             0
       ExternalMedia                  1
       PreventUserIdleSystemSleep     0
       NetworkClientActive            0
    Listed by owning process:
       pid 84(hidd): [0x0000000a0000080a] 00:09:05 UserIsActive named: "com.apple.iohideventsystem.queue.tickle"
      Timeout will fire in 589 secs Action=TimeoutActionRelease
       pid 16(powerd): [0x000000090000012c] 18:58:22 ExternalMedia named: "com.apple.powermanagement.externalmediamounted"
    Kernel Assertions: 0x2c=USB,BT-HID,THNDR
       id=500  level=255 0x4=USB mod=14/07/14 19.41 description=XHC1 owner=AppleUSBXHCI
       id=503  level=255 0x20=THNDR mod=15/07/14 11.53 description=NHI0 owner=AppleThunderboltHAL
       id=504  level=255 0x8=BT-HID mod=01/01/70 01.00 description=com.apple.driver.IOBluetoothHIDDriver owner=BNBMouseDevice
       id=505  level=255 0x8=BT-HID mod=01/01/70 01.00 description=com.apple.driver.IOBluetoothHIDDriver owner=AppleBluetoothHIDKeyboard
    where there is nothing blocking the system from going to sleep, except me (the flag “UserIsActive” equals “1”). Everything looks relaxed and beautiful, and sleep should be possible any moment now. …any moment noooowwffhh …any …shhh
    Here’s an example of a period of real and completely undisturbed sleep from the recent night:
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    14/07/14 23.22.06 CEST   Sleep                   Idle Sleep to DarkWake: Using AC (Charge:100%)                                          
    14/07/14 23.22.06 CEST   Assertions              PID 16(powerd) Created InternalPreventSleep "com.apple.powermanagement.darkwakelinger" 00:00:00  id:0xe00000455 [System: SRPrevSleep NetAcc kCPU]             
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    14/07/14 23.22.22 CEST   Assertions              PID 16(powerd) Released InternalPreventSleep "com.apple.powermanagement.darkwakelinger" 00:00:15  id:0xe00000455 [System: SRPrevSleep kCPU]             
    14/07/14 23.22.22 CEST                           Summary- [System: No Assertions] Using AC                                               
    14/07/14 23.22.22 CEST   Sleep                   Idle Sleep: Using AC (Charge:100%)                                             36619 secs
    14/07/14 23.22.23 CEST   Assertions              PID 127(cupsd) Created NetworkClientActive "org.cups.cupsd" 00:00:00  id:0x1200000460 [System: BGTask NetAcc kCPU]             
    14/07/14 23.22.24 CEST   SlowResponse            PMConnection: Response from com.apple.apsd is slow (powercaps:0x0)                       1997 ms      
    14/07/14 23.22.24 CEST   WakeRequests            Clients requested wake events: None                                                     
    15/07/14 09.32.41 CEST   Wake                    Wake [CDNVA] due to EHC1/HID Activity: Using AC (Charge:100%)                  1399 secs
    15/07/14 09.32.41 CEST   Cancelled               Kernel: Response from cupsd is to cancel state change (powercaps:0x9)                   
    15/07/14 09.33.10 CEST   Assertions              PID 1092(backupd-helper) Released BackgroundTask "backupd-helper" 00:00:28  id:0xc0000046c [System: PrevIdle BGTask NetAcc kCPU]             
    15/07/14 09.33.11 CEST   Assertions              PID 1165(AddressBookSour) Released PreventUserIdleSystemSleep "Address Book Source Sync" 00:00:30  id:0x100000473 [System: PrevIdle BGTask NetAcc kCPU]             
    15/07/14 09.33.11 CEST   Assertions              PID 221(UserEventAgent) Released BackgroundTask "com.apple.AddressBook.ScheduledSync" 00:00:30  id:0xc00000474 [System: PrevIdle BGTask NetAcc kCPU]             
    15/07/14 09.33.12 CEST   Assertions              PID 127(cupsd) Released NetworkClientActive "org.cups.cupsd" 10:10:49  id:0x1200000460 [System: PrevIdle BGTask]             
    15/07/14 09.34.29 CEST   Assertions              PID 1092(backupd-helper) Released BackgroundTask "backupd-helper" 00:00:30  id:0xc0000048a [System: PrevIdle BGTask]             
    15/07/14 09.34.38 CEST   Assertions              PID 137(mds_stores) Released BackgroundTask "com.apple.metadata.mds_stores.power" 00:01:45  id:0xc00000485 [System: PrevIdle BGTask]             
    15/07/14 09.34.38 CEST   Assertions              PID 11(UserEventAgent) Released BackgroundTask "com.apple.metadata.mds_stores.power" 00:01:45  id:0xc00000486 [System: PrevIdle BGTask]             
    15/07/14 09.37.04 CEST   Assertions              PID 1180(backupd) Released BackgroundTask "Time Machine backup" 00:03:54  id:0xc00000487 [System: PrevIdle]             
    15/07/14 09.37.04 CEST   Assertions              PID 1180(backupd) Released PreventUserIdleSystemSleep "Time Machine backup" 00:03:54  id:0x100000488 [System: No Assertions]             
    15/07/14 09.41.21 CEST   Assertions              PID 1266(AddressBookSour) Released PreventUserIdleSystemSleep "Address Book Source Sync" 00:00:30  id:0x10000049c [System: BGTask]             
    15/07/14 09.41.21 CEST   Assertions              PID 221(UserEventAgent) Released BackgroundTask "com.apple.AddressBook.ScheduledSync" 00:00:30  id:0xc0000049d [System: No Assertions]             
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    15/07/14 09.50.20 CEST   Assertions              PID 1274(AddressBookSour) Released PreventUserIdleSystemSleep "Address Book Source Sync" 00:00:30  id:0x1000004c6 [System: BGTask]             
    15/07/14 09.50.20 CEST   Assertions              PID 221(UserEventAgent) Released BackgroundTask "com.apple.AddressBook.ScheduledSync" 00:00:30  id:0xc000004cd [System: No Assertions]             
    15/07/14 09.51.29 CEST   Assertions              PID 1393(AddressBookSour) Released PreventUserIdleSystemSleep "Address Book Source Sync" 00:00:30  id:0x1000004e0 [System: BGTask]             
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    Before activating iCloud contact sync, this situation was often (maybe most of the time or always ???) blocked by a sync process recurring again and again and again each 30 seconds in "perpetuity" ;-)
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