[ltp] belt & suspenders suspend-to-ram script for acpid

[Richard Neill]

Florian Reitmeir wrote:
> 
>>Ah. Could it be that you have the BIOS configured to suspend on 
>>lid-close? The BIOS's internal suspend-logic is independent of ACPI!
> 
> 
> There is no "BIOS's internal suspend-logic" if ACPI is in use. Thats all
> about ACPI, not using the BIOS to make things happen.
> 
> APM = everything does the BIOS
> ACPI = everthing does the OS
> 


Thanks for the correction. Still, at least on my A22p, I normally have 
suspend working thus:

   lid-close -> ACPI event -> acpi sleep script -> suspend to RAM.
     -> open lid -> wake.

BUT, if I also have "suspend on lid close" enabled in the BIOS, the 
machine either sleeps again immediately after waking (and needs to be 
woken twice), or crashes.

So the BIOS certainly does something as well as the OS. Maybe the BIOS 
does an APM suspend while the OS does an ACPI suspend?

The A22 is an odd machine in that it seems to do both apm and acpi; you 
can choose, although neither is done well.

Richard