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APM vs ACPI Power Management


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acz's Avatar
acz acz is offline
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22-Apr-2001, 12:40 PM #1
I have an IBM Thinkpad T20 running Win 98 SE.
Somehow it has gotten ACPI installed for power management, instead of APM.
I think this must be why the hibernation/suspend buttons do not work.

IBM's tech support told me that ACPI is not supported for Win 98, and probably was installed erroneously, since they believe that only APM works under Win 98. Of course the instructions supplied with the drivers at their own web site DO seem to suggest that the power management drivers there work under Win 98, 2000, Me, etc.

However, the only solution they recommend is to reformat the hard drive and reinstall EVERYTHING from scratch, beginning with their original CD-ROM that supposedly came with the machine when it originally left the factory (which I do not have).

Does anyone here have any familiarity or understanding of these power managment issues?

Thank you.

ACZ
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tjsudo tjsudo is offline
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Join Date: Jul 2000
Location: Las Vegas, NV
22-Apr-2001, 02:00 PM #2
Hi there,

You got a little mixed up.
Take a look at this,

http://www.coolcomputing.com/reviews/os/w98acpi.html

TJ
Davey7549's Avatar
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22-Apr-2001, 03:31 PM #3
APM vs ACPI
tjsudo
There have been many posts here questioning why stand and hibernation is not working.
When you called IBM tech support they may of gave you good information in saying that thier unit does not support ACPI.
Many units do not support the Microsoft ACPI function according to Microsoft. I don't think reformatting your drive and reinstalling windows is going to fix the problom since windows will just reload power management ACPI.
You may want to turn off all power management through your start/settings/control panel/power mngt
Set too always on and never turn off all other selections.
After you do that see if your hot buttons work.
Below is a link to
Microsofts knowledge base that lists different topics on ACPI/APM

http://search.support.microsoft.com/...o.x=31&Go.y=20
Davey7549's Avatar
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22-Apr-2001, 03:49 PM #4
acz Reply by E-mail

This is the message:

I have stopped energy management and screen saver, I would like the computer to run all the time. It does but the screen freezes down a bit with a red strip at the top. Problem being I have to reboot to see what is going on. I know I have seen something else about keeping the computer on but I don't remember what or where. I'm running Win98. Thanks for any help!
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