Why does my iMac wake up immediatly after being put to sleep ?

Question

Level 1

5 points

Why does my iMac wake up immediatly after being put to sleep ?

My iMac 2011 wakes up immediatly after being put to sleep, except the first time after a restart.

I had the same problem with my iMac from 2007.

I've tried quitting all running applications, unplugging all cables except the keyboard and mouse, and of course I have "wake up when network activity is detected" turned off.

It never worked.

I've gathered the following informations in the Terminal:

syslog |grep -i "Wake reason ="

Last login: Mon Jan 30 13:57:22 on ttys002

SiPe-iMac-27-2011:~ SiPe$ syslog |grep -i "Wake reason ="

Tue Jan 24 09:08:34 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Tue Jan 24 12:31:19 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Tue Jan 24 17:05:36 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Wed Jan 25 13:21:01 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Thu Jan 26 09:48:48 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Thu Jan 26 10:30:30 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Thu Jan 26 15:24:24 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Thu Jan 26 16:56:51 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Fri Jan 27 01:11:11 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Fri Jan 27 01:13:02 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Fri Jan 27 01:22:39 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Fri Jan 27 15:52:47 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Sat Jan 28 08:57:52 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Sat Jan 28 13:10:36 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Sun Jan 29 04:17:59 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

Mon Jan 30 05:02:35 SiPe-iMac-27-2011 kernel[0] <Debug>: Wake reason = EHC1

SiPe-iMac-27-2011:~ SiPe$ pmset -g

Active Profiles:

AC Power -1*

Currently in use:

hibernatemode 0

halfdim 0

womp 0

sleep 15

powerbutton 1

disksleep 10

hibernatefile /var/vm/sleepimage

ttyskeepawake 1

autorestart 0

displaysleep 5

SiPe-iMac-27-2011:~ SiPe$

iMac, Mac OS X (10.6.8)

Posted on Jan 31, 2012 3:20 AM

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Answer 1

X423424X

Level 6

14,265 points

Jan 31, 2012 3:41 PM in response to Somolian

For starters do a smc and pram reset.

The wake reason codes can be found here. So for ECH:

EHC: standing for Enhanced Host Controller, is another USB interface, but can also be wireless devices and bluetooth since they are also on the USB bus of a Mac.

Don't know what else to suggest if you disconnected all additional devices. Are you using a apple keyboard and mouse or another brand?

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Answer 2

Somolian Author

Level 1

5 points

Jan 31, 2012 10:48 PM in response to X423424X

I already did a PRAM reset recently, I'll try an SMC one next time I restart.

The KB and mouse are by Apple.

Shouldn't ttyskeepawake be set to 0 ? and what does it mean ?

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Answer 3

X423424X

Level 6

14,265 points

Jan 31, 2012 10:58 PM in response to Somolian

From pmst manpage:

ttyskeepawake - prevent idle system sleep when any tty (e.g. remote login session) is 'active'. A tty is 'inactive' only when its idle time exceeds the system sleep timer. (value = 0/1)

Generally it's enabled (1).

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Answer 4

fane_j

Level 4

3,697 points

Feb 1, 2012 4:38 AM in response to Somolian

I've no clue what the problem is, but maybe it's worth while finding out what EHC1 is on your system

$ ioreg -rn EHC1

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Answer 5

Somolian Author

Level 1

5 points

Feb 1, 2012 4:51 AM in response to fane_j

SiPe-iMac-27-2011:~ SiPe$ ioreg -rn EHC1
+-o EHC1@1D,7  <class IOPCIDevice, id 0x1000001b2, registered, matched, a$
  | {
  |   "assigned-addresses" = <10ef008200000000006890a80000000000040000>
  |   "IOInterruptSpecifiers" = (<1600000007000000>)
  |   "AAPL,current-extra-in-sleep" = 2700
  |   "class-code" = <20030c00>
  |   "IODeviceMemory" = (({"address"=2828036096,"length"=1024}))
  |   "IOPowerManagement" = {"ChildrenPowerState"=2,"CurrentPowerState"=2$
  |   "subsystem-vendor-id" = <86800000>
  |   "built-in" = <00>
  |   "acpi-device" = "IOACPIPlatformDevice is not serializable"
  |   "AAPL,current-extra" = 2700
  |   "AAPL,device-internal" = 2
  |   "IOInterruptControllers" = ("io-apic-0")
  |   "name" = "pci8086,1c26"
  |   "vendor-id" = <86800000>
  |   "device-id" = <261c0000>
  |   "acpi-pmcap-offset" = 80
  |   "IOPCIResourced" = Yes
  |   "AAPL,current-available" = 2100
  |   "compatible" = <"pci8086,7270","pci8086,1c26","pciclass,0c0320">
  |   "AAPL,max-port-current-in-sleep" = 2100
  |   "USBBusNumber" = 253
  |   "locationID" = 18446744073659219968
  |   "acpi-path" = "IOACPIPlane:/_SB/PCI0@0/EHC1@1d0007"
  |   "subsystem-id" = <70720000>
  |   "revision-id" = <05000000>
  |   "pcidebug" = "0:29:7"
  |   "IOName" = "pci8086,1c26"
  |   "reg" = <00ef00000000000000000000000000000000000010ef00020000000000$
  | }
  | 
  +-o IOService  <class IOService, id 0x1000001f1, !registered, !matched,$
  +-o AppleUSBEHCI  <class AppleUSBEHCI, id 0x1000001f2, registered, matc$
    +-o EHCI Root Hub Simulation@1D,7  <class IOUSBRootHubDevice, id 0x10$
    | +-o AppleUSBHub  <class AppleUSBHub, id 0x100000211, registered, ma$
    | +-o IOUSBInterface@0  <class IOUSBInterface, id 0x100000213, !regis$
    +-o HubDevice@fd100000  <class IOUSBHubDevice, id 0x10000024f, regist$
    | +-o AppleUSBHub  <class AppleUSBHub, id 0x100000253, registered, ma$
    | +-o IOUSBInterface@0  <class IOUSBInterface, id 0x100000255, !regis$
    +-o Card Reader@fd110000  <class IOUSBDevice, id 0x100000277, registe$
    | +-o IOUSBCompositeDriver  <class IOUSBCompositeDriver, id 0x1000002$
    | +-o IOUSBInterface@0  <class IOUSBInterface, id 0x10000027b, regist$
    |   +-o com_apple_driver_AppleUSBCardReaderUMC  <class com_apple_driv$
    |     +-o IOSCSIPeripheralDeviceNub  <class IOSCSIPeripheralDeviceNub$
    |       +-o com_apple_driver_AppleUSBCardReaderSBC  <class com_apple_$
    |         +-o IOBlockStorageServices  <class IOBlockStorageServices, $
    |           +-o IOBlockStorageDriver  <class IOBlockStorageDriver, id$
    +-o Keyboard Hub@fd140000  <class IOUSBHubDevice, id 0x10000028f, reg$
    | +-o AppleUSBHub  <class AppleUSBHub, id 0x10000029d, registered, ma$
    | +-o IOUSBInterface@0  <class IOUSBInterface, id 0x10000029f, !regis$
    +-o Apple Keyboard@fd142000  <class IOUSBDevice, id 0x1000002b3, regi$
    | +-o IOUSBCompositeDriver  <class IOUSBCompositeDriver, id 0x1000002$
    | +-o IOUSBInterface@0  <class IOUSBInterface, id 0x1000002b6, regist$
    | | +-o AppleUSBHIDKeyboard  <class AppleUSBHIDKeyboard, id 0x1000002$
    | |   +-o IOHIDInterface  <class IOHIDInterface, id 0x1000002bb, regi$
    | |   | +-o AppleHIDKeyboardEventDriver  <class AppleHIDKeyboardEvent$
    | |   |   +-o IOHIDKeyboard  <class IOHIDKeyboard, id 0x1000002bf, re$
    | |   |   | +-o IOHIDSystem  <class IOHIDSystem, id 0x100000231, regi$
    | |   |   |   +-o IOHIDUserClient  <class IOHIDUserClient, id 0x10000$
    | |   |   |   +-o IOHIDParamUserClient  <class IOHIDParamUserClient, $
    | |   |   |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystem$
    | |   |   |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystem$
    | |   |   +-o IOHIDSystem  <class IOHIDSystem, id 0x100000231, regist$
    | |   |     +-o IOHIDUserClient  <class IOHIDUserClient, id 0x1000004$
    | |   |     +-o IOHIDParamUserClient  <class IOHIDParamUserClient, id$
    | |   |     +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUs$
    | |   |     +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUs$
    | |   +-o IOHIDLibUserClient  <class IOHIDLibUserClient, id 0x1000006$
    | +-o IOUSBInterface@1  <class IOUSBInterface, id 0x1000002b7, regist$
    | | +-o AppleUSBHIDKeyboard  <class AppleUSBHIDKeyboard, id 0x1000002$
    | |   +-o IOHIDInterface  <class IOHIDInterface, id 0x1000002c3, regi$
    | |   | +-o CMUSBDevice  <class com_orderedbytes_ControllerMate_drive$
    | |   |   +-o IOHIDConsumer  <class IOHIDConsumer, id 0x1000002c5, re$
    | |   |   | +-o IOHIDSystem  <class IOHIDSystem, id 0x100000231, regi$
    | |   |   |   +-o IOHIDUserClient  <class IOHIDUserClient, id 0x10000$
    | |   |   |   +-o IOHIDParamUserClient  <class IOHIDParamUserClient, $
    | |   |   |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystem$
    | |   |   |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystem$
    | |   |   +-o IOHIDSystem  <class IOHIDSystem, id 0x100000231, regist$
    | |   |   | +-o IOHIDUserClient  <class IOHIDUserClient, id 0x1000004$
    | |   |   | +-o IOHIDParamUserClient  <class IOHIDParamUserClient, id$
    | |   |   | +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUs$
    | |   |   | +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUs$
    | |   |   +-o CMUSBDevicesUserClient  <class com_orderedbytes_Control$
    | |   +-o IOHIDLibUserClient  <class IOHIDLibUserClient, id 0x1000006$
    | +-o IOUSBDeviceUserClientV2  <class IOUSBDeviceUserClientV2, id 0x1$
    | +-o IOUSBDeviceUserClientV2  <class IOUSBDeviceUserClientV2, id 0x1$
    +-o Apple Optical USB Mouse@fd143000  <class IOUSBDevice, id 0x100000$
    | +-o IOUSBCompositeDriver  <class IOUSBCompositeDriver, id 0x1000002$
    | +-o IOUSBInterface@0  <class IOUSBInterface, id 0x1000002ca, regist$
    | | +-o AppleHIDMouse  <class AppleHIDMouse, id 0x1000002cc, register$
    | |   +-o IOHIDInterface  <class IOHIDInterface, id 0x1000002cd, regi$
    | |   | +-o IOHIDEventDriver  <class IOHIDEventDriver, id 0x1000002ce$
    | |   |   +-o IOHIDPointing  <class IOHIDPointing, id 0x1000002d0, re$
    | |   |   | +-o IOHIDSystem  <class IOHIDSystem, id 0x100000231, regi$
    | |   |   |   +-o IOHIDUserClient  <class IOHIDUserClient, id 0x10000$
    | |   |   |   +-o IOHIDParamUserClient  <class IOHIDParamUserClient, $
    | |   |   |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystem$
    | |   |   |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystem$
    | |   |   +-o IOHIDSystem  <class IOHIDSystem, id 0x100000231, regist$
    | |   |     +-o IOHIDUserClient  <class IOHIDUserClient, id 0x1000004$
    | |   |     +-o IOHIDParamUserClient  <class IOHIDParamUserClient, id$
    | |   |     +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUs$
    | |   |     +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUs$
    | |   +-o IOHIDLibUserClient  <class IOHIDLibUserClient, id 0x1000006$
    | +-o IOUSBDeviceUserClientV2  <class IOUSBDeviceUserClientV2, id 0x1$
    +-o IR Receiver@fd120000  <class IOUSBDevice, id 0x10000041a, registe$
      +-o IOUSBCompositeDriver  <class IOUSBCompositeDriver, id 0x1000004$
      +-o IOUSBInterface@0  <class IOUSBInterface, id 0x10000041e, regist$
        +-o RBAIRDriver  <class RBAIRDriver, id 0x10000045b, registered, $

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Answer 6

sanjampet

Level 5

7,982 points

Feb 1, 2012 6:37 AM in response to Somolian

could be a USB device, or Blutooth, also got preferences>power adapteadvanced> and unclick wake for network access if you are on a network. Also go to syst prefs, unlock, click on admin>login items and remove all log in helpers "ITunes helper...etc."

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Answer 7

Somolian Author

Level 1

5 points

Feb 1, 2012 8:13 AM in response to sanjampet

I already had "wake for network access if you are on a network" off.

I removed each login item one by one and put the computer to sleep each time, now the list is empty but it still wakes up.

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Answer 8

X423424X

Level 6

14,265 points

Feb 1, 2012 12:15 PM in response to Somolian

Looks like your machine has a card reader and infrared receiver. I wonder if they could be your problem.

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Answer 9

sanjampet

Level 5

7,982 points

Feb 1, 2012 12:23 PM in response to Somolian

X423424X.

might be right remove any periferals, cards, USB's firewie,etc. as well as put a piece of tape over the IR reader, I've heard that the IR reader will receive any IR, not necessarily do anything with it but it could keep it awake.

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Answer 10

fane_j

Level 4

3,697 points

Feb 1, 2012 1:04 PM in response to Somolian

So it looks like EHC1 is an Intel USB controller, which is in charge of a card reader, a keyboard, an optical mouse, and an IR receiver. Since, as you uncovered, EHC1 seems to be the reason for the wake event, any one of those could be the insomniac.

I guess there isn't much you can do about the SDXC slot, so check one by one the other three. As suggested, try covering the Apple Remote receiver with a piece of paper (I shouldn't try tape directly over it, because you don't want to leave sticky residue there). Try disconnecting the mouse, then the keyboard. Remember, test them one by one, not all at once, to try to isolate which one is the problem.

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Answer 11

Somolian Author

Level 1

5 points

Feb 1, 2012 1:24 PM in response to fane_j

I suspect the IR receiver.

Some time ago it stoped working with my old remote, I had to use Remote Buddy to get it to work again but the demo expired. Candelair's diagnostic told me that ControllerMate Helper was using the IR receiver but even after I quit it, computer still woke up.

I turned off the IRR with candelair, also unplugged the KB, then the mouse, still wakes up.

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Answer 12

fane_j

Level 4

3,697 points

Feb 1, 2012 1:48 PM in response to Somolian

Somolian wrote:

I suspect the IR receiver.

Could be. Maybe it's defective, in which case i've no idea what to do. I don't know if it's possible to disconnect it physically, I guess you'll have to google that. But first, make sure there's no piece of software left behind by the apps you mentioned (I've haven't used or heard of any of them) which might want access to the IR port. This might be consistent with the behaviour you report, ie, that the Mac does go to sleep once, the first time after restarting.

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Answer 13

Somolian Author

Level 1

5 points

Feb 1, 2012 1:52 PM in response to Somolian

Hang on...

version 1.9 of Candelair brings this change:

Fix: Now correctly handles sleep/wakeup of the Apple® IR Receiver on iMac 2011 models. Previously, the Apple® IR Receiver became unavailable on some of these machines after a sleep/wake cycle.

I uninstalled 1.7 and when I restarted the Mac, 1.9 was not yet installed, but it stays asleep and the remote works again, so I'll leave it like this.

Thanks for all the help.

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