Comment 26 for bug 289087

I seem to have successfully built a debug image. Here's how:

apt-get source linux
apt-get build-dep linux
cd linux-2.6.31/
fakeroot make -f debian/rules binary-generic skipdbg=false
sudo dpkg -i ../linux-image-debug-2.6.31-19-generic_2.6.31-19.56_amd64.ddeb

Replace "generic" with whichever flavor of the kernel you want to build and, obviously, the version number and amd64 with the version you are building and your host architecture.

Building the image takes a long time (20-30 minutes) and the resulting package is more than 400MB.