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The default Ubuntu kernel -generic package doesn't seem to have symbols in it.

I'm trying to avoid compile a kernel with debug info manually.

Does Ubuntu provide a package with kernel debug symbols?

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2 Answers 2

up vote 15 down vote accepted

First create a ddebs.list using:

$ echo "deb $(lsb_release -cs) main restricted universe multiverse" |
sudo tee -a /etc/apt/sources.list.d/ddebs.list

Then add the GPG key for

$ sudo apt-key adv --keyserver --recv-keys ECDCAD72428D7C01

Then run:

$ sudo apt-get update

Then install the symbols package using:

$ sudo apt-get install linux-image-`uname -r`-dbgsym

This is rather huge (>680MB), so prepare for a wait while you download it.

I use the linux kernel debug symbols for tools like systemtap on the kernel.

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apt-cache search dbgsym returns pkg-create-dbgsym only, was it in some other repository? – warl0ck Oct 6 '12 at 9:40
@warl0ck Yes, the -dbgsym packages are in special repositories that you must enable, to install them. This explains how. – Eliah Kagan Oct 6 '12 at 10:15
I've now updated the post to clarify how to do that. – Colin Ian King Oct 6 '12 at 19:22
step apt-get update results in a warning message: W: GPG error: trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY ECDCAD72428D7C01, that is why I am extending this with a solution for that case. – Pro Backup Aug 12 '14 at 18:55
sudo apt-get install linux-image-$(uname -r)-dbgsym=3.13.0-49.83 Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package linux-image-3.13.0-49-generic-dbgsym E: Couldn't find any package by regex 'linux-image-3.13.0-49-generic-dbgsym' – Kenny Evitt May 25 at 22:08

I tried Colin Ian King's answer and it did not work for me. I found out I must add two extra lines in /etc/apt/sources.list.d/ddebs.list

Edit the file via

sudo nano /etc/apt/sources.list.d/ddebs.list

and add the two lines below

deb trusty-updates main restricted universe multiverse
deb trusty-proposed main restricted universe multiverse

Replace trusty with your version that you get when you execute

lsb_release -cs
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