No update-initramfs error to be seen. Considering how broken your Ubuntu installation is, I'd recommend to reinstall or alternatively to ask your friendly Debian/Ubuntu guru next doar to fix it.
** Changed in: initramfs-tools (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/778462 Title: package initramfs-tools-bin 0.98.1ubuntu6 failed to install/upgrade: ErrorMessage: le paquet initramfs-tools-bin est déjà installé et configuré To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/778462/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs