Grr!

[Edward Glowacki]

Quoted from Matt Graham on Mon, Jun 11, 2001 at 06:29:14PM -0400:
> "Jeremy Paul Bowers" <bowersj2@pilot.msu.edu> wrote:
> > Ben Pfaff, you said. . .
> > >As I understand it, this is true for BIOS-assisted
> > >suspend-to-disk.  But I don't think that BIOS-assisted
> > >suspend-to-disk is supported by Linux.  Fortunately, it doesn't
> > >need to be: there is a kernel "hibernation" patch that does this
> > >without any assistance from hardware or BIOS, and this patch
> > >works on any hardware.
> 
> Correct about the patch.  However, some laptops (lots of ThinkPads) have a
> hardware "suspend-to-disk" that you can trigger with a key sequence.

I have what appears to be a form of hardware suspend-to-disk on
the inspiron 4000 (a key on the keyboard labelled "suspend").  I
just hit the key and suspended my Linux install...  The problem is
that my suspend-to-disk partition appears to be 80mb, and soon I
shall have 192mb of RAM (have 64 now, 128 at home waiting...), and
immediately after it on the disk is WinME.  =(  My thought now is
to make that boot disk I've heard about with the utility to recreate
the suspend-to-disk partition, make it something like 200mb, then
partition the rest of my disk as needed, followed by full installs
of Windoze and Linux... Sigh... lots of work... =P

> 
> > I run Linux on a P133 laptop, and I really wanted the suspend-to-disk. I
> > eventually set it up in the BIOS so that after 20 minutes of being
> suspended,
> > it saves everything to the disk (to a DOS parition at the start of the
> drive)
> > and shuts off. When next I turn on the computer, Linux comes back off the
> disk
> > and life is mostly good.
> 
> As I understand it, the suspend-to-disk on many laptops requires that you make
> a "hibernation" file that has a special name, is on a FAT partition, and is
> composed of contiguous sectors.  The starting and ending sectors are written
> to somewhere in the NVRAM, generally by the DOS utility that creates the
> hibernation file.  Then, either a key sequence or a super-secret series of
> BIOS calls does the actual suspend work.
> 
> FWIW, a Thinkpad 600X with a full battery loses roughly 30% of its battery
> charge for each 24 hours of suspend-to-RAM operation.  Yeah, it's not that
> great, but perfectly fine for my usage patterns....
> 
> -- 
> Matt G / Dances With Crows
> There is no Darkness in Eternity/But only Light too dim for us to see
> "I backed up my brain to tape, but tar says the tape contains no data...."
> 
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-- 
Edward Glowacki				glowack2@msu.edu
GLLUG Peon  				http://www.gllug.org
Imagination is the one weapon in the war against reality.
                -- Jules de Gaultier