[ACPI-sppt] Return to S0 from S3

I am testing going into S3 mode via
'echo 3 > /proc/acpi/sleep'.
I get messages (powering down hard disk)
on my screen that seem to indicate it is working.
But my keyboard goes to sleep too.

How do I get out of S3 back to normal
mode (S0)?

kernel/Documentation/power/states.txt
says "STR requires some minimal boot-strapping
code to resume the system from STR."
How do I do that?

If there is an ACPI HOWTO that covers
more than installation, would you point
me in the right direction?  Thanks.


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