@tasgo : I just followed the procedure explained at askubuntu, without success : the upgrade still fails with the same error message... :/
@michael-ransbottom : I suspected that, but even after adding the xorg-edgers PPA like this : ' ' sudo add-apt-repository ppa:xorg-edgers/ppa sudo apt-get update sudo apt-get install <package name> ' ' ... when trying to install the 'xorg-server' package, I still get messages like "Impossible to find the packet xorg-server". HOWEVER I decided to remove the libkms1 packet, and then after reactivating the xorg-edgers repository, the ppa-purge seems to run ok... I will take you informed if I succeed in upgrading 13.10 to 14.04 after that... :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1069133 Title: Get upgrade error 12.04 - 12.10 "Could not determine upgrade" - xorg from ppa To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1069133/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs