salut
tu ouvres une console et tu tapes sudo gedit /etc/apt/sources.list
tu effaces l'ancien contenu du fochier et tu copies-colles ceci
deb
http://fr.archive.ubuntu.com/ubuntu/ edgy main restricted
deb-src
http://fr.archive.ubuntu.com/ubuntu/ edgy main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb
http://fr.archive.ubuntu.com/ubuntu/ edgy-updates main restricted
deb-src
http://fr.archive.ubuntu.com/ubuntu/ edgy-updates main restricted
## Uncomment ***spam*** two lines to add software from the 'universe'
## repository.
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb
http://fr.archive.ubuntu.com/ubuntu/ edgy universe
deb-src
http://fr.archive.ubuntu.com/ubuntu/ edgy universe
## Uncomment ***spam*** two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb
http://fr.archive.ubuntu.com/ubuntu/ edgy-backports main restricted universe multiverse
deb-src
http://fr.archive.ubuntu.com/ubuntu/ edgy-backports main restricted universe multiverse
deb
http://security.ubuntu.com/ubuntu edgy-security main restricted
deb-src
http://security.ubuntu.com/ubuntu edgy-security main restricted
deb
http://security.ubuntu.com/ubuntu edgy-security universe
deb-src
http://security.ubuntu.com/ubuntu edgy-security universe
# Extra packages not available elsewhere
deb
http://medibuntu.sos-sts.com/repo/ edgy free non-free
Je t'ai rajouté le dépôts multimédia pour installer les codecs pour lire les fichiers multimédia (w32codecs).
"A mon avis chez Microsoft ils sont infiniment plus doués pour faire du fric que pour élaborer des systèmes d'exploitation performants." Linus Torvalds
http://fr.wikipedia.org/wiki/Mepis
Linux User # 415016