Wake on LAN stops working after a while of inactivity

freelancer91

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I am running Windows 8 x64 on an Intel DX48BT2 motherboard. The Network adapter is a built-in INtel 82566DC-2.

Simply put, WOL works fine as long as I don't let the computer sit in sleep mode for too long. However, if I let it, for example, sit overnight, then it cannot be woken with a magic packet in the morning. Right now, in device manager, the settings under power management for the network adapter

1. Allow the computer to turn off this device to save power
2. Allow this device to wake the computer
3. Only allow a magic packet to wake the computer

If I look, for example, at my mouse's settings (which is able to wake the computer no matter how long it has been in sleep mode), it shows this:

1. (Grayed out and unchecked) Allow the computer to turn off this device to save power)
2. Allow this device to wake the computer

Presumably, I want the network adapter to be more like the mouse in that the computer NEVER turns off the device and that the device is allowed to wake the rest of the computer. However, it isn't that simple.

If I uncheck the box, to Allow the computer to turn off the network adapter to save power (like it is in the mouse), then the other 2 boxes become grayed out (but still checked). When I test WOL in this state, it doesn't work no matter what.

It doesn't make sense to me that the computer would turn off the device to save power, and yet somehow, this device is supposed to be able to wake the computer while it itself is sleeping.

Under the driver tab, it says that I have a driver signed on 9/27/2011 (version 9.13.41.1). Updating the driver produces no results. As best I can tell, this is as good as it gets for my 4 year old motherboard.

Does anyone have any idea why WOL stops working after a while but can be reenabled for a short while if you wake the computer by other means (and then put it back to sleep, of course)?
 

My Computer

System One

  • OS
    Windows 8
    System Manufacturer/Model
    Dell Studio XPS 1340 / Custom desktop
    CPU
    LT: Intel P8600 Core 2 Duo (2.4GHz) DT: QX9770 Core 2 Extreme
    Motherboard
    DT: DX48BT2 from Intel
    Memory
    LT: 4GB of 1066MHz DDR3 DT: 8GB of OCZ DDR3 Dual Channel 1333Mhz Gold Series RAM
    Graphics Card(s)
    LT: Nvidia 9400M G DT: GTX295
    Monitor(s) Displays
    DT: 2 Acer 23 iinch 1080p displays
    Screen Resolution
    LT: 1280x800 DT: 3840x1080
    Hard Drives
    LT: 320GB Seagate Momentus 7200rpm
    DT: 1TB Samsung HD103UJ 7200rpm
    PSU
    DT: 1000W Rosewill Bronze Series
    Case
    DT: Thermaltake Armor LCS
    Cooling
    DT: Custom assortment of wate rcooling parts
    Keyboard
    DT: Microsoft Sidewinder X4
    Mouse
    DT: Logitech wired USB mouse
    Internet Speed
    about 370KB/s down, 70KB/s up
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