acpi on a Samsung V20 with mandrake 9.0

Hello,

I am not an expert of acpi, so excuse me if my questions are basic. (but there is no acpi-users mailing list, just an acpi-devel one...) I try to use acpi on my laptop Samsung V20, which is supposed to support acpi 1.0b.
I have installed Mandrake 9.0, but because acpi is not compiled in their kernel, I have upgraded to the 2.4.20 kernel from mandrake (package kernel-2.4.20.1mdk-1-1mdk). I have also tried to recompile that kernel.

Acpi seems to work, because I have a /proc/acpi directory with several files and subdirectories. I have two main problems :
- I can't control the state of my battery : the subdirectory /proc/acpi/battery is empty.
- I can't enter a suspend to ram mode. I have tried
cat -n 1 > /proc/acpi/suspend
but nothing appears.

What is wrong in my configuration ?
Many thanks.

Frederic

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