installer crashdump sur ubuntu 1404

Je suis [ ici ] à installer crash dump sur Ubuntu 1404 :

sudo apt-get install linux-crashdump

Cependant, il lance une exception comme ci-dessous :

... unmet dependencies
linux-crashdump  : Depends: kdumptools but it is not going to be installed

PS : J'ai suivi [ ici ] pour résoudre le problème, mais il ne trouve pas de paquet tenu cassé...

Mise à jour : ma plateforme est Ubuntu 14.04 sur Linux 3.16.0-generic.

Mise à jour 2 : voici l'impression complète.

app> sudo apt-get install linux-crashdump kdump-tools makedumpfile libdw1
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libdw1 : Depends: libelf1 (= 0.158-0ubuntu5) but 0.158-0ubuntu5.2 is to be installed
E: Unable to correct problems, you have held broken packages.