netbook, close, suspend: ACPI?

[Mihamina Rakotomandimby]

Hi all,

I have a small netbook that I broke the screen.

I use it as a headless gateway now (the VGA port is still OK when 
needed, I just have to plug a screen).

I just noticed that if I "close" (or fold) it, after a while it goes to 
suspend state (or hibernate I dont know exactly). I have to "open" it 
and press the power button in order to make it. If I dont close it, it's 
alright, nothing to say.

How to avoid going to a sleepy state when closed? I want to close it for 
esthetic reasons.

I guess it's about disabling some ACPI, but what is the Debian/Ubuntu 
way to do that?

-- 
RMA.