Hello JeeBee,
I found the changelog indicating that the ASLA support for the ALC883 chipset was fixed in the 2.6.18-rc1 version of the linux kernel. So you won't have this kernel version unless you have rebuilt your linux kernel at some point.
[url=http://www.digitalhermit.com/linux/Kernel-Build-HOWTO.html%5DThis%5B/url] is the clearest website I know of that explains rebuilding of the linux kernel.
When you get to the step for getting the source files, the file you need is located at
/pub/linux/kernel/v2.6/testing/linux-2.6.18-rc3.tar.bz2
in the http://kernel.org/mirrors mirror of your choice.