Wake on lan only from sleep?

Is Wake On Lan (Wake for Ethernet network administrator access) only available when sleeping, and not when powered down?

Actually it doesn't require any operating system or higher function, and Apple isn't complying with the wake-on-lan standard by only providing WOL from sleep.
Any PC with WOL can start cold from complete power off. This is all done at the hardware level, no OS at all.
During power off, the power supply is still providing power. Any machine that complies with WOL, keeps the network interface powered up. No IP address, no operating system... just the physical interface watching the raw network traffic.
A broadcast packet containing the NIC's MAC address (unique hardware address, not IP address) should trigger it to tell the machine to power on. In PCs with NICs on the motherboard this is all internal, in PCs with NIC cards, the power is drawn from the constant 5V on the PCI bus, and there is sometimes a small cable connected to the motherboard which is used to trigger the power on (same as the front panel button).
Apple is simply choosing not to implement this feature, it's not because it can't easily be done.
Come on Apple... comply with the standard!

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Hi,
I noticed a problem with constant high CPU usage on one of my cores.
As much as 60% was used.
The problem occures after I put the system to "sleep" (S3 state) and perform a WOL with a "magic packet".
I discovered that ACPI.sys+0x1af44 thread was responsible (using sysinternals ProcessExplorer) under the System process.
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My NIC is "Realtek PCIe GBE Family Controller" and I'm using the latest drivers.
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another sleep and awaking the system with power button "resets" the CPU usage issue for "good". Until i WOL from sleep again ofcourse..
I contacted the motherboard manufacturer of the problem but so far no real answer.
I'm saddened because I need the WOL feature.
I'm hoping somebody who has more insight in the behaviour of ACPI on W7 can answer my questions.
Regards
Specs:
Model Name : GA-X58A-UD7(rev. 2.0)
M/B Rev : 2.0
BIOS Ver : FC
Serial No. :
Purchase Dealer :
VGA Brand : Nvidia      Model : 7950GT
CPU Brand : Intel      Model : i7 950      Speed : 3.06GHz
Operation System : Win 7 64-bit      SP :
Memory Brand : Corsair      Type : DDR3
Memory Size : 6GB      Speed : 1600MHz
Power Supply : 450 W

Hi,
I noticed a problem with constant high CPU usage on one of my cores.
As much as 60% was used.
The problem occures after I put the system to "sleep" (S3 state) and perform a WOL with a "magic packet".
I discovered that ACPI.sys+0x1af44 thread was responsible (using sysinternals ProcessExplorer) under the System process.
If i perform WOL while the machine was shut down everything works perfectly.
My NIC is "Realtek PCIe GBE Family Controller" and I'm using the latest drivers.
I discovered that if I disabled the option in Power Management for the device: "Allow this device to wake the computer", the CPU usage immediately went to normal (without restarting). But enabling it back the high CPU usage resumes. Performing another sleep
and awaking the system with power button "resets" the CPU usage issue for "good". Until i WOL from sleep again ofcourse..
I contacted the motherboard manufacturer of the problem but so far no real answer.
I'm saddened because I need the WOL feature.
I'm hoping somebody who has more insight in the behaviour of ACPI on W7 can answer my questions.
Regards
Specs:
Model Name : GA-X58A-UD7(rev. 2.0)
M/B Rev : 2.0
BIOS Ver : FC
Serial No. :
Purchase Dealer :
VGA Brand : Nvidia      Model : 7950GT
CPU Brand : Intel      Model : i7 950      Speed : 3.06GHz
Operation System : Win 7 64-bit      SP :
Memory Brand : Corsair      Type : DDR3
Memory Size : 6GB      Speed : 1600MHz
Power Supply : 450 W
same prob here. has anyone found a solution?
...stephen

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struct ifreq ifr;
strlcpy(ifr.ifr_name, "en1", sizeof(ifr.ifr_name));
int s = socket(AF_INET, SOCK_DGRAM, 0);
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How wake up the computer from sleep

I have an HPE Pavilion h8-1100z, 64 bit, running Win 7. When the computers goes to sleep, I have problems waking it up. I have tried pressing various keys but nothing happens. Microsoft says to check the computer manual but I don't see anything in the manual which tells me what to do. I end up turning the computer off.
This question was solved.
View Solution.

Guinniegirl, welcome to the forum.
I suggest changing the power settings: Start / Control Panel / Power Options. In the left column there are different categories for making the computer Sleep. Check the settings to assure they are to your liking. You can change any of the settings to "Never" if you choose to do so.
Please click "Accept as Solution" if your problem is solved.
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Wake on lan only from sleep?

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