State of ACPI on my Compaq Presario 2100z

[Andre Eisenbach <andre-+hZUvIEKc2q1Z/+hSey0Gg@public.gmane.org>]

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Dear ACPI team,

I've contacted you guys a while ago about the problems with my Compaq Presario 
2100, back then specifically my problems with a slowdown when running on 
battery and suspend problems. I even soldered up some parallel port LED's 
back then, but never got to put them to good use.

Since then, ACPI is working even worse than before, now the notebook doesn't 
shut down properly anymore. The last message is "Power off." (when doing 
shutdown -h now), or "Sending acpi_power_off" (when doing echo -n disk 
> /sys/power/state).

Battery, AC, thermal zone and CPU info works fine.

Suspending to memory suspends the notebook, but opening the lid again (or 
pressing the power button) only results in a sub-second wake-up (fan starts, 
hd starts ever so slightly, lcd stays off), then all goes dark again - 
everything off. Pressing the power button again just starts regular boot.

Suspending to disk seems to work with every module unloaded and outside of X. 
Trying the same from within X is a totally different (ugly) problem 
alltogether. But that's not important to me anyway.

I'm currently running kernel 2.6.9-rc1-mm2 (acpi 20040816).

As I did back then, I am very interested in helping out troubleshooting the 
problem. I am a software developer, but I just don't know where to start 
here. If somebody wishes to speculate what may be wrong (with suspend/powe 
off) from a birds-eye view, I might find a place to start my journey into 
ACPI.

But in any case, thanks to all of you for your continued hard work - you guys 
are truly an asset to the open source community!

Thanks,
   Andre

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