[TriLUG] Here's a "duh" from a h/w guy...ACPI vs. APM

[David A. Cafaro]

I don't know the very technical details but the basics are this:

APM - Advanced Power Management - an older standard that is decently 
supported in linux (works real well for me in Mandrake 8.2 on a dell 
Latitude C600)

ACPI - Advanced Configuration and Power Interface - a new standard that is 
to replace APM, not as well supported in linux yet, but growing.

I believe that using both at the same time will cause conflicts because 
each will be trying to do the same thing, both tying to handle poweroff, 
both trying to handle resume, etc...  Here are some links that might help:

ACPI4Linux - http://phobos.fs.tum.de/acpi/

ACPI info - http://www.acpi.info/index.html



At 01:31 PM 3/25/2002, you wrote:
>I haven't been able to keep up with the h/w changes to intel based machines
>as I used to. I know that ACPI is new (relatively) to intel's mainboards,
>but what is it, and why when I compile support for it, does APM give
>problems? I.E. I have a new laptop with ACPI (Toshiba 2800) and with ACPI
>support compiled, APM will not power off the laptop, when I compile it
>without it, APM works fine.
>
>  Also, there are boot errors with ACPI compiled for mounting "none" to
>/proc, but without ACPI, no boot errors.
>
>Can someone explain this?
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