Markus, could you add this one to your collection of "override DSDT via 
initrd" patches on http://gaugusch.at/kernel.shtml, please?

An mkinitrd working for the patch can be found here:
ftp.suse.com/pub/people/trenn/mkinitrd

use:
mkinitrd -k vmlinuz-version -i initrd-version -a /etc/DSDT.aml
for initramfs or
add the -R option to build up an initrd.

One time tested.
Comments appreciated.

         Thomas

-> linux-2.6.11-rc5