sure thing. will update this week.

This issue is still not fixed. I think you assumed atieventsd is what I was talking about, but this is for something else acutally. atieventsd is the daemon that monitors DVI plgging events on different laptops (IBM in particular) and automatically switches drivers to display video on attached monitor.
I was rather talking about /etc/acpi/events scripts that are executed on lid/ac events. I am not sure if these are included in basic fglrx install package, but I remember these were included in debian (.deb) package for sure. The files are:
/etc/acpi/events/fglrx-ac-aticonfig
/etc/acpi/events/fglrx-lid-aticonfig
/etc/acpi/fglrx-powermode.sh

I see the scripts you're talking about now... they're hidden in usr/share/doc/examples/fglrx/etc/acpi inside ATI's package, which is why I missed them in the first place, since we generally strip doc from the packages.

I'll update the packages tonight (probably in about 12 hours - long day of lectures and midterms ahead) - since I don't have a laptop myself, I'll post a new ati-fglrx-utils on my webspace and post the URL here - would you be able to test it for me before I throw it into the repos?

Sure I would. Waiting for the URL then :)

http://www.archlinux.org/~travis/ati-fglrx-utils-8.29.6-3.pkg.tar.gz

Let me know how it works. :)

I am affraid it doesn't. When I unplug the cord, nothing happens (aticonfig --lsp confirms that). If I manually run ati-powermode.sh then, I get:
cromo@kromka:~$ sudo sh /etc/acpi/ati-powermode.sh
Lid Open
On AC
high power
/etc/acpi/ati-powermode.sh: line 8: finger: command not found
/etc/acpi/ati-powermode.sh: line 10: finger: command not found

Same can be found in /var/log/acpid.
I have no idea where to get this finger tool from :O

OK. I had to install netkit-bsd-finger. Seems this has to be dependency. Also, change the aticonfig path within ati-powermode.sh. ATM it's set to /usr/bin/X11R6/aticonfig, should be /usr/bin/aticonfig.

I tested both lid & ac events, everything seems working fine. Only weird thing is that it takes about 3s for acpid script to execute after uplugging the cord - I remember it used to work immediately with Ubuntu. Anyway, that's not any serious and probably related to acpid itself.

You can also remove the "--effective=now" switch from aticonfig command lines in ati-powermode.sh, it has no effect after all. When using this switch aticonfig says "Warning : Option 'PowerState' is exclusive, other options will be ignored.", which confirms that it's not needed anymore (probably aticonfig has changed its behaviour at some point).

Excellent - thanks for your work. I'll get those changes in later today, and upload it all to the repos.

-- EDIT --

Fixed in 8.29.6-3

Great. Thanks for your effort.