j’ai pu trouver la solution en étant sur le forum dubuntu
et voici la commande
sudo dpkg -P --force-all ‘le paquet qui bloque’
Pour connaître le paquet qui bloque, quand vous faites un sudo dpkg –configure -a, c’est simplement le premier paquet qui apparaît.
Exemple :
dudumomo@dudumomo-laptop:~$ sudo dpkg --configure -a
dpkg: dependency problems prevent configuration of skype:
skype depends on libqt4-core (>= 4.2.1); however:
Package libqt4-core is not installed.
skype depends on libqt4-gui (>= 4.2.1); however:
Package libqt4-gui is not installed.
dpkg: error processing skype (–configure):
dependency problems - leaving unconfigured
Setting up initramfs-tools (0.85eubuntu19) …
update-initramfs: deferring update (trigger activated)
Setting up lm-sensors (1:2.10.4-1ubuntu1) …
/usr/bin/ucf: line 351: getopt: command not found
dpkg: error processing lm-sensors (–configure):
subprocess post-installation script returned error exit status 127
Setting up libpaper1 (1.1.22ubuntu1) …
/usr/bin/ucf: line 351: getopt: command not found
dpkg: error processing libpaper1 (–configure):
subprocess post-installation script returned error exit status 127
dpkg: dependency problems prevent configuration of libpaper-utils:
libpaper-utils depends on libpaper1; however:
Package libpaper1 is not configured yet.
dpkg: error processing libpaper-utils (–configure):
dependency problems - leaving unconfigured
Processing triggers for initramfs-tools …
update-initramfs: Generating /boot/initrd.img-2.6.22-12-generic
/usr/sbin/mkinitramfs: 13: getopt: not found
Terminating…
update-initramfs: failed for /boot/initrd.img-2.6.22-12-generic
dpkg: subprocess post-installation script returned error exit status 1
Là le paquet en question c’est skype
et merci pour a la personne qui ma donné l’idée d’aller sur le forum ubuntu 