[ltp] T21 battery charging and draining problems

[Robert Kleemann]

Kevin Locke wrote:

>I have had ACPI running on my T21
>since I bought it (about a year ago), and it has been wonderful.
>

Yeah, I've been continuing to explore acpi (gentoo has really good docs 
for it http://www.gentoo.org/doc/en/power-management-guide.xml) and have 
been seeing temp, cpu speed, button events, lid events, battery charge, 
etc.  Maybe linux acpi is capable of driving both APM and ACPI bios 
specifications...???

The one problem I'm having is that although I'm getting an event when 
the battery is added and removed, I'm not getting an event when ac power 
is added or removed.  The acpi system is still aware of this as 
/proc/acpi/ac_adapter/AC/state is updated accordingly but an event is 
not sent to acpid.  I need these event to trigger a change to and from 
the default runlevels to the battery runlevels.

Kevin, if you wouldn't mind trying an experiment:

# tail -f /var/log/acpid
(or whereever your acpi messages are sent)
and then plug in and unplug your ac adapter a few times.

I end up getting a lot of battery status messages but no ac adapter 
messages.

One potential problem is that I'm running the ibm-acpid that is built 
into the kernel (v0.8) instead of the latest (0.11)  I looked at the 
code and didn't see anything significant but maybe that's causing the 
problem.

Robert.