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Power up laptop with lid closed

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Power up laptop with lid closed Stefan Mueller 01-26-2008
Posted by Stefan Mueller on January 26, 2008, 9:30 pm
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I have 4 IBM ThinkPads (T21). The power button is under the lid so
that I have to open the lid to turn on the laptop. But my problem is
that I can't open the lid because I've stacked these laptops in a box.
Tonight I tried to bring somehow the power button outside of the
laptop. Unfortunately the power button is part of the keyboard which I
can't open.

Does anyone have an idea how I can work it to power up the laptops
without opening the lids? I'm thinking about a solution to add to
wires which I can connect to do the same as pressing the power button.

Any help is very appreciated
Stefan

Posted by mike on January 27, 2008, 7:21 am
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Stefan Mueller wrote:
> I have 4 IBM ThinkPads (T21). The power button is under the lid so
> that I have to open the lid to turn on the laptop. But my problem is
> that I can't open the lid because I've stacked these laptops in a box.
> Tonight I tried to bring somehow the power button outside of the
> laptop. Unfortunately the power button is part of the keyboard which I
> can't open.
>
> Does anyone have an idea how I can work it to power up the laptops
> without opening the lids? I'm thinking about a solution to add to
> wires which I can connect to do the same as pressing the power button.
>
> Any help is very appreciated
> Stefan
You didn't ask, so I assume you've figured out all the cooling issues.

There are also lots of issues about what happens when you close the lid.
Usually, they're configurable. Make sure that all works before you
invest too much in the switch solution.

It's possible that the power switch hooks directly to the keyboard
connector.
A little poking with an ohm-meter might divulge which pins to short.

There's an ethernet function that allows you to turn on a system
by sending a magic packet to it. I've used it on a desktop.
You'll have to check the bios to see if your laptop has that function.

Some systems will automatically reboot after power failure. Check bios
for something like that.

Have you considered low-tech solutions? Something glued or wedged
such that the switch gets mashed when you pull on a string or twist a
wire with a bump on the end?



--
Return address is VALID!

Posted by BillW50 on January 27, 2008, 8:54 am
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In
Stefan Mueller typed on Sat, 26 Jan 2008 18:30:15 -0800 (PST):
> I have 4 IBM ThinkPads (T21). The power button is under the lid so
> that I have to open the lid to turn on the laptop. But my problem is
> that I can't open the lid because I've stacked these laptops in a box.
> Tonight I tried to bring somehow the power button outside of the
> laptop. Unfortunately the power button is part of the keyboard which I
> can't open.
>
> Does anyone have an idea how I can work it to power up the laptops
> without opening the lids? I'm thinking about a solution to add to
> wires which I can connect to do the same as pressing the power button.
>
> Any help is very appreciated
> Stefan

I had the same idea. I have two Toshiba 2595XDVD ('99 era) and two
Gateway MX6124 ('06 era) laptops. Hook them all to a KVM switch and have
4 computers to access. Mount them on a home made rack. Although what I
quickly discovered was running closed laptops gets really hot. So that
killed the whole idea.

So I would test the heat issue before you go any further. It seems to me
that laptops are not designed to run with the lid closed. As the heat
build up is tremendous. Anyway good luck on your project. :-)

--
Bill
email: change kom to com


Posted by mike on January 27, 2008, 10:18 am
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BillW50 wrote:
> Stefan Mueller typed on Sat, 26 Jan 2008 18:30:15 -0800 (PST):
>> I have 4 IBM ThinkPads (T21). The power button is under the lid so
>> that I have to open the lid to turn on the laptop. But my problem is
>> that I can't open the lid because I've stacked these laptops in a box.
>> Tonight I tried to bring somehow the power button outside of the
>> laptop. Unfortunately the power button is part of the keyboard which I
>> can't open.
>>
>> Does anyone have an idea how I can work it to power up the laptops
>> without opening the lids? I'm thinking about a solution to add to
>> wires which I can connect to do the same as pressing the power button.
>>
>> Any help is very appreciated
>> Stefan
>
> I had the same idea. I have two Toshiba 2595XDVD ('99 era) and two
> Gateway MX6124 ('06 era) laptops. Hook them all to a KVM switch and have
> 4 computers to access. Mount them on a home made rack. Although what I
> quickly discovered was running closed laptops gets really hot. So that
> killed the whole idea.
>
> So I would test the heat issue before you go any further. It seems to me
> that laptops are not designed to run with the lid closed. As the heat
> build up is tremendous. Anyway good luck on your project. :-)
>
One possibility is to physically remove the lid/display and blow air
across the space.
Networks are getting fast enough that you can use VNC and eliminate the
KVM switch.

Depending on why you need multiple computers and whether you need
specific hardware support, emulation can be used.
Since I discovered VirtualPC, I took out all the redundant hardware.
The only time I need separate hardware is when I need hardware support
for something not emulated in VirtualPC. I can run linux and Win2K
emulated simultaneously on an XP system. There's a lot to be said for the
ability to cut text out of one OS instance and paste it into another.

--
Return address is VALID!

Posted by BillW50 on January 27, 2008, 11:18 am
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mike typed on Sun, 27 Jan 2008 15:18:09 GMT:
> BillW50 wrote:
>> In
>> Stefan Mueller typed on Sat, 26 Jan 2008 18:30:15 -0800 (PST):
>>> I have 4 IBM ThinkPads (T21). The power button is under the lid so
>>> that I have to open the lid to turn on the laptop. But my problem is
>>> that I can't open the lid because I've stacked these laptops in a
>>> box. Tonight I tried to bring somehow the power button outside of
>>> the laptop. Unfortunately the power button is part of the keyboard
>>> which I can't open.
>>>
>>> Does anyone have an idea how I can work it to power up the laptops
>>> without opening the lids? I'm thinking about a solution to add to
>>> wires which I can connect to do the same as pressing the power
>>> button. Any help is very appreciated
>>> Stefan
>>
>> I had the same idea. I have two Toshiba 2595XDVD ('99 era) and two
>> Gateway MX6124 ('06 era) laptops. Hook them all to a KVM switch and
>> have 4 computers to access. Mount them on a home made rack. Although
>> what I quickly discovered was running closed laptops gets really
>> hot. So that killed the whole idea.
>>
>> So I would test the heat issue before you go any further. It seems
>> to me that laptops are not designed to run with the lid closed. As
>> the heat build up is tremendous. Anyway good luck on your project.
>> :-)
> One possibility is to physically remove the lid/display and blow air
> across the space.
> Networks are getting fast enough that you can use VNC and eliminate
> the KVM switch.
>
> Depending on why you need multiple computers and whether you need
> specific hardware support, emulation can be used.
> Since I discovered VirtualPC, I took out all the redundant hardware.
> The only time I need separate hardware is when I need hardware support
> for something not emulated in VirtualPC. I can run linux and Win2K
> emulated simultaneously on an XP system. There's a lot to be said
> for the ability to cut text out of one OS instance and paste it into
> another.

That is a good thought Mike. But I believe in buying cheap and to buy
more often. Plus I believe in purchasing the same make and model for
backup purposes. Thus I can swap out the hard drives and I am back in
business in less than 60 seconds. Plus the spare allows me to have more
processing power as well.

I have tried VNC software like Remote Desktop Control
(http://www.remote-desktop-control.com/) and it is okay for web pages
and email and the like, but not for video streaming and stuff. Otherwise
I like it a lot. Plus there are just some stuff you can't do well under
these conditions.

Things like VirtualPC and Remote Desktop Control hits the PC processor
pretty hard. And with me buying cheap like Celeron M processors... the
PC can easily bog down. Thus KVM switch seems like the solution to me in
my case, don't you think? Most of the time the CPU use is nil anyway for
what I do. Thus occasionally I need a bit more power and thus fire up
another laptop. :)

--
Bill
email: change kom to com


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