From OMAPpedia

[edit] Getting Debug Symbols

Debug symbols for Ubuntu software packages are generally contained in -dbg or -dbgsym package names and are stored at a specific location. In order to get access to these packages you can follow the below procedure:

• Add Ubuntu debug symbols repositories (same procedure is valid for universe and multiverse):

sudo sh -c 'echo "deb http://ddebs.ubuntu.com maverick main restricted" >> /etc/apt/sources.list'
sudo sh -c 'echo "deb http://ddebs.ubuntu.com maverick-updates main restricted" >> /etc/apt/sources.list'

• Add the GPG public key:

gpg --keyserver keyserver.ubuntu.com --recv-key 428D7C01
gpg --export 428D7C01 | sudo apt-key add -

• Update package list database:

sudo apt-get update

• Install your package with symbols. For instance for the OMAP4 kernel image 2.6.35-903 version:

sudo apt-get install linux-image-2.6.35-903-omap4-dbgsym