Yep, Claudio is correct. I have an old 600e and this is an official
statement from IBM support page long ago:

*"The ThinkPad 600E is ACPI ready. ACPI is not installed, but the system
hardware supports ACPI. While ACPI shows a great deal of promise for the
future, numerous problems affect the operation of ACPI on ThinkPad and
other notebook systems. Therefore, the system comes with Windows 98 running
in APM mode."*

So while it might 'support' ACPI theoretically, it probably wont work very
well ;)

Il Lun 3 Lug 2023, 4:47 PM Claudio Jeker <[email protected]> ha
scritto:

> Also keep in mind that laptops that old most often had bad or broken early
> ACPI implementations and it was better to not enable ACPI on those.
> Normally there was some BIOS knob to just use apm(4) which often worked
> much better.
>
> On Mon, Jul 03, 2023 at 08:58:45PM +0200, Daniele B. wrote:
> > Thanks Peter, point got.
> >
> > I also go ahead with very old hardware, kind of 10 years old minipc/pc
> (including a Mac Pro).. and
> > we are in so good habits with our OpenBSD os that we tend to think no
> problem will never arise.
> > Saddly enough we maybe forget what is really feasible..
> >
> >
> > -- Daniele Bonini
> >
> >
> > Jul 3, 2023 14:47:57 Peter N. M. Hansteen <[email protected]>:
> >
> > > On Mon, Jul 03, 2023 at 01:36:10PM +0200, Michael Hekeler wrote:
> > >> oh dear I have forgotten the model number - Sorry!
> > >>
> > >> It is Thinkpad 570
> > >
> > > I had to look this up, since I had forgotten that Thinkpads used to
> come
> > > with model numbers not prefixed and/or postfixed with letters.
> > >
> > > I think one of several issues you will bump into is that the machine is
> > > almost a quarter century old (released April 1999 if Wikipedia is to
> be trusted),
> > > and you may be one of fairly few people who have kept one around this
> long.
> > >
> > > This means in practice that in all likelihood, recent versions of any
> now-useful
> > > software has been only lightly tested (if at all) on that vintage
> hardware.
> > >
> > > If you can get someone with the right skillset interested (as in, not
> me, by
> > > any measure) it is conceivable that a fix is within reach. That said,
> however,
> > > I suspect that improving support for more current hardware would tend
> to
> > > take priority when developers decide what to spend their time on.
> > >
> > > All the best,
> > > Peter
> > >
> > > --
> > > Peter N. M. Hansteen, member of the first RFC 1149 implementation team
> > > https://bsdly.blogspot.com/ https://www.bsdly.net/
> https://www.nuug.no/
> > > "Remember to set the evil bit on all malicious network traffic"
> > > delilah spamd[29949]: 85.152.224.147: disconnected after 42673
> seconds.
> >
>
> --
> :wq Claudio
>
>

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