waking from suspend for unknown reason

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  1. feh
    Posts : 13
    Windows 7 RC 7100
       #1

    waking from suspend for unknown reason


    Hi folks.

    I'm using Win7 exclusively for its media center capabilities. As such, the machine is usually sleeping.

    When I leave for work in the morning, the machine is suspended (S3), but when I come home in late afternoon, it has resumed and is running at full power.

    Anybody know why this would happen? How can I determine what's causing this?

    Thanks!
      My Computer


  2. Posts : 72,050
    64-bit Windows 11 Pro for Workstations
       #2

    Hello Feh,

    The items listed in the tutorial below may be able to help you determine what is waking up your computer. A usual cause of this is the "Allow to Wake computer" option checked for the Network Adapted (STEP SIX), or the Multimedia settings -> When sharing media is not set to "Allow the computer to sleep" (STEP TWO).

    Power Options and Sleep Mode Problems - Vista Forums

    Hope this helps,
    Shawn
      My Computer


  3. Posts : 627
    Windows 7 7600.16384 x64
       #3

    If what Shawn suggested about the Media sharing doesn't work, some easy things to look at are the drivers for the NIC, KB, and Mouse in the device manager. You can unceck the power management options safely and see if that helps.
    Attached Thumbnails Attached Thumbnails waking from suspend for unknown reason-nic.jpg   waking from suspend for unknown reason-kb.jpg  
      My Computer


  4. feh
    Posts : 13
    Windows 7 RC 7100
    Thread Starter
       #4

    Thanks for the replies.

    I've already verified the NIC is not allowed to wake the machine. I'm using a wireless keyboard/mouse, and I'd like the kb to wake the machine on a key press.

    I've used the same kb/mouse w/ a Vista machine, and it didn't wake up like this, so I doubt that's the problem.

    When I get home, I'll go through the doc previously posted.
      My Computer


  5. Posts : 397
    6x W2K8 R2 (x64), 6x W7 7600 (x64), 2x Gentoo (x64), 1x Ubuntu 9.04 (x64), 1x pfSense (FreeBSD)
       #5

    Have you checked what woke the computer yet using the below command?

    Code:
    powercfg -LASTWAKE
    Here is an example output

    G:\Users\mikinho>powercfg -LASTWAKE
    Wake History Count - 1
    Wake History [0]
    Wake Source Count - 1
    Wake Source [0]
    Type: Device
    Instance Path: USB\VID_05AC&PID_020B\6&2a3dde78&0&3
    Friendly Name:
    Description: USB Composite Device
    Manufacturer: (Standard USB Host Controller)
      My Computer


  6. feh
    Posts : 13
    Windows 7 RC 7100
    Thread Starter
       #6

    mikinho said:
    Have you checked what woke the computer yet using the below command?

    Code:
    powercfg -LASTWAKE
    Here is an example output
    Nope. That's the first thing I'll do tonight.
      My Computer


  7. Posts : 4,573
       #7

    Do you have a cat? My cat used to wake my PC via Space Bar all the time. RIP Baby Mama.
      My Computer


  8. Posts : 627
    Windows 7 7600.16384 x64
       #8

    Antman said:
    Do you have a cat? My cat used to wake my PC via Space Bar all the time. RIP Baby Mama.

    LOL i love it
      My Computer


  9. Posts : 397
    6x W2K8 R2 (x64), 6x W7 7600 (x64), 2x Gentoo (x64), 1x Ubuntu 9.04 (x64), 1x pfSense (FreeBSD)
       #9

    btw, the command to show all devices that can wake the system is:

    POWERCFG -DEVICEQUERY wake_from_any

    For wake from S3 use

    POWERCFG -DEVICEQUERY wake_from_S3_supported

    Hope it helps
      My Computer


  10. Posts : 133
    Windows 7 x64 RTM
       #10

    Antman said:
    Do you have a cat? My cat used to wake my PC via Space Bar all the time. RIP Baby Mama.
    Hahaha!
      My Computer


 
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