IT8212 on Ubuntu

1.Get kernel source
# cd /usr/src
# wget http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.11.tar.bz2
# tar xjvf linux-2.6.11.tar.bz2

2.Get ac-patch (Alan Cox's Patch)
# wget http://kernel.org/pub/linux/kernel/people/alan/linux-2.6/2.6.11/
patch-2.6.11-ac7.gz
# gzip -d patch-2.6.11-ac7.gz

3.Patch
# cd /usr/src/linux-2.6.11/
# patch -p1 < ../patch-2.6.11-ac7
It should be no errors.

4.Configure kernel
# make menuconfig

5.build deb
# make-kpkg --initrd --revision=1 kernel_image

If you don't have ""make-kpkg"":
# apt-get install kernel-package

6.Install new kernel
# dpkg -i /usr/src/kernel-image-2.6.11ac7_1_i386.deb


Reference
http://kerneltrap.org/forum/linux/kernel/2.6/ac