[ltp] Re: T23 / ibm-acpi

[Borislav Deianov]

Hi Chris,

First, apologies for the very late reply...

On Tue, 17 Aug 2004 23:12:04 +0000 (UTC) Christopher Hubbell <cgh@rochester.rr.com> wrote:
> Greetings,

> I have a T23 which I'm anxious to get the assorted buttons and suspend 
> modes working on.  I noted in the ibm-acpi README that it has been 
> tested on many of the newer models, but not yet the T23.  I'm happy to 
> be a guinea pig, but before doing so just wanted to do dilligence to the 
> warning indicating that ..."IT MAY NOT WORK ON YOUR THINKPAD. IT MAY 
> EVEN DAMAGE IT."  Is there any known reason why it would be a bad thing 
> to try on the T23?

It's theoretically possible to damage hardware through low-level
software (see, for example, the warnings on www.linux-thinkpad.org).
That being said, ibm-acpi has had a large number of success reports
and no problems so far. I'll probably drop the warning from the next
release, or at least tone it down.

> Also, I've been trying to find something definitive about whether ACPI 
> or APM is the way to go on the T23.  It's not a recent model, but not 
> all that old either.   I'm looking for the solution which enables as 
> much native thinkpad functionality as possible, but haven't found any 
> solid references as to what's best suited to the T23.  I'm using 
> standard ACPI on Fedora Core 2 right now, but only seem to be able to 
> get suspend to memory working, and none of the buttons ('echo 3 > 
> /proc/acpi/sleep' isn't as nice as hitting a button).

If you have suspend-to-ram working, you've done the hard part. There
are three different suspend-to-disk implementations, one of them
should work for you. For everything else, there's ibm-acpi :-).

If you do have ACPI running on the T23 (with or without ibm-acpi), I'd
appreciate a copy of your DSDT (from /proc/acpi/dsdt). That would
allow me to check new features of ibm-acpi against it.

Regards,
Boris