[ltp] ACPI and TP 770

[Andre Timmermann]

Am Mi, den 28.04.2004 schrieb Charles E Taylor IV um 20:08:

> [snip thermal stuff - never had need to monitor temperature on my
> Thinkpads.]

OK, there might be no need, but it is possible. So I wanted to give it a
try.

> > - with ACPI the fan stops
> 
> It stops with APM - or at least it did on my 600.  I wonder if there's a
> BIOS setting that controls this somewhere.   I sold my 600, but I never
> had a problem with the fan constantly running under APM.
>
> > - with ACPI the battery should last longer (my battery is broken, with
> > full battery I have 45 minutes, so I am happy with every minute more)
> 
> You said suspend-to-disk worked with ACPI - that's the swsusp stuff,
> right?  (http://swsusp.sourceforge.net/).  Is that any faster than the
> BIOS suspend-to-disk?  I might try ACPI myself if suspend-to-disk was
> quick.  I have a 448M 770Z and a 320M 560E and while suspend-to-disk works
> fine on both under APM, the process takes FOREVER to finish.  This is with
> 5400 RPM 40G drives, too.

I've never tried suspend to disk with swsusp with APM. IBM has its own
solution for this called hibernation. You must have a DOS-partition
which is slightly bigger than your RAM where tpctl will store the
RAM-data. In addition you have to enable hibernation support with tpctl.
That works fine with APM, but not with ACPI.

With ACPI I have used the swsusp-package wich works also fine. I cannot
remember any speed differences between both systems.

Greetz,
Andre
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