[ltp] acpi sleep vs apm sleep

[Tino Keitel]

On Mon, Mar 22, 2004 at 09:56:29 +0100, Roman Joost wrote:
> On Mon, Mar 22, 2004 at 12:58:31AM -0500, Brad Langhorst wrote:
> > I can get both to work but acpi sleep consumes much more power than apm
> > sleep.
> > 
> > I don't have windows see if this is a linux problem or just the nature
> > of acpi sleep ..
> > 
> > anybody know?
> > 
> I had the same problem, but this is not the fault of the acpi sleep. I
> tried the S3 state of the acpi, which of course consumes much more power
> than the acpi sleep. But the equivalent sleep mode of the apm sleep is
> S5, which isn't supported by the recent kernel i've tested on (2.6.4).

According to [1], S5 is "power down", not really a sleep mode. IIRC I
already tried S5 on my desktop with a 2.6 kernel and it worked.

Regards,
Tino

[1] http://acpi.sourceforge.net/documentation/sleep.html