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I use my laptop with 2 external monitors and external keyboard (I use it as a desktop at home), but when I go out I only take the laptop of course.
What bothers me is that I always have to open and close the lid just to press the power buton.
I dont have enough free space in my working area to keep my laptop's lid open, and I dont want to keep it that way either.

Is there a way I can wake-up/turn-on my laptop without opening the lid?

I dont have another computer in my LAN (just my laptop and router) so the wake-on-lan technique wont serve my needs.
Unless.... there would be some kind of device (a simple and small device) that connects to a LAN and sends the magic packet. But such a device would have to have a way to receive a MAC address as input from the user, so I don't think such a device exists at all.

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Raspberry PI is ~ USD $30, and is a linux box so you can pretty much make it do anything. (Though I agree with wake-on-usb as the answer to this problem). – cod3monk3y Jan 17 '14 at 16:06
up vote 6 down vote accepted

Check the BIOS if it supports wake-up on USB, then you can wake it up with an external keyboard.

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What OS are you using?

There should be many WakeOnLan utilities out there.

For Mac you could use this one: WakeOnLan

For Windows there are also a few out there: WakeOnLan 2, ...

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You need a second computer for wake-on-lan. As I said in my question, I only have one computer. But even if I had two laptops, what if they are both turned off? – GetFree Jan 24 '10 at 22:53
Missed that part... Than the answer of unkonwon (Google) should do it.. – road242 Jan 25 '10 at 9:14

How about this :

Set control panel -> power options -> what to do when the lid is closed -> choose "do nothing".

put your pc to sleep, close the lid, then when you move your mouse, it should wake up.

Not sure if it will work, or if you have already tried it. Please let me know so I edit / delete my answer if necessary :)

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I have a Dell Inspiron N5110 laptop. You do want to set it to "Do Nothing" when the lid is closed, but this alone was not enough for me. I had to go into the BIOS and "Enable" the Wake on USB option. This feature was disabled on my laptop. Works great now. I just click the mouse or keyboard and it powers up from a sleep state.

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What about hibernation? Does it wake-up from hibernation? – GetFree Nov 14 '14 at 17:27

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