Sleep or Suspend problems

Sleep or Suspend problems

[captain]

I'm still learning the ropes here and working my way through both "Linux 
Kernel in a Nutshell" and "Linux Device Drivers" but not finished as 
yet, so it might be premature on my part to ask this question. I don't 
think finishing either book will answer the question so I'll risk it.

I'm running OpenSuse (11.1 I think) which has a "3.1.10-1.16-desktop" 
Kernel. In order to learn the ropes and move towards contribution I've 
built the 3.6.0 Kernel and with the help of "Linux Kernel in a Nutshell" 
have compiled into the kernel all the modules which OpenSuse's 3.1.10 
kernel was using. So I've all the modules in there.

My problem is that the when I shut down the lid of the netbook both 
kernel's Sleep or Suspend (not sure which is which) and flash a light to 
signify that the netbook is suspended. Now on the 3.1.10 kernel when I 
reopen the netbook it comes back to life and everybody is happy. When I 
reopen the 3.6.0 Kernel, even though the led is flashing to signify that 
the computer is asleep or suspended, the computer goes back to BIOS 
powerup. So a complete reset is initiated.

I'm not going to ask ye to fix this but I'm wondering how do I start 
finding the source of this problem? I've looked in /var/log/messages and 
nothing as yet jumps out at me. I suppose I really need to have some 
idea what module in the kernel I should be looking into but there's a 
lot of ACPI modules in there. If anyone could suggest how one proceeds 
I'd be very grateful.