ACPI help

[Jacob Schmude]

Hi
	If APMD locks the system up, it's probably a pretty good bet that 
ACPI wasn't even heard of when the machine was built. You could probably 
find out by putting ACPI in your kernel and looking at the output from 
dmesg, but if your laptop is more than four or five years old there won't 
be any ACPI on it. ACPI won't help in the case of automatically closing 
the lid and suspending, anyway, you have to set up linux software suspend 
for that which doesn't need acpi or apm. However, it's a real pain in the 
ass to set up, I still don't have it working quite right. Sometimes it 
works, sometimes I get "unable to handle kernel null pointer dereference" 
(anyone know what that means, by the way?)
	If you want to change the behavior of closing the lid with APM, 
you need to do it from your bios.
HTH
On Sun, 20 Jun 2004, Steve Holmes wrote:

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SH> I'm kinda new to this APM/ACPI stuff but I own an older Hitachi laptop
SH> and can't really tell if ACPI will work on it.  About the only thing
SH> I've been successful at doing is leave APM support in the kernel and
SH> now if I type 'shutdown -h now', the machine will actually turn itself
SH> off.  Before doing that to the kernel, the machine would stay on and
SH> have to be manually turned off.  I cannot seem to adiquately monitor
SH> any APM events and apmd would consistantly cause my machine to lock up
SH> anyway.  I now run the machine without APMD and my machine never locks
SH> up any more.  I understand ACPI is much better than APM but I don't
SH> think older machines' hardware supports it.  Any good way to find out?
SH> I realy would like a way to just close the lid for example and have
SH> that auto-suspend or auto-standby the computer for me or simply have
SH> it power itself down gracefully.