Hi Serge, Sorry for the long delay in replying, I overlooked the email notification.
Yes that is almost correct, I add previously installed the ppa:ubuntu- lxc/lxd-stable (so the LXD one not ppa:ubuntu-lxc/stable as you mentioned) in Vivid. But before doing the upgrade I installed the ppa- purge tool and used it to remove this ppa (which was by the way the only 3rd party source on my system). After a successful ppa-purge, I went on and did a do-release-upgrade which then failed, or actually it did not complete successfully. So I was still able to reboot the machine and Wily was the new system. LXC was broken after the reboot. But I did: "apt update; apt upgrade; apt full-upgrade" which fixed the it by properly installing LXC. One thing was then missing from the upgrade process: because of the failure with the LXC package, the cleaning at the end of the upgrade (when executing do-release-upgrade) did not happen. So I had lots of obsolete or dandling packages which I had to look for and remove manually. I guess a way to reproduce it is: 1. Install Ubuntu 15.04 2. Make sure the system is up to date: apt update; apt full-upgrade; reboot 3. Install from the Ubuntu repository the following packages: lxc lxc-templates 4. Install ppa:ubuntu-lxc/lxd-stable and install the following packages: lxc lxd lxc-templates 5. (I don't think a reboot is necessary to proceed, but I'm not 100% sure) 6. Install ppa-purge and remove the installed ppa from step 3 (this should install back the previous packages from the Ubuntu repos) 7. Perform a release upgrade to Wily: di-release-upgrade -d 8. Boom! (or at least it did that on 2 machines here!) :-) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1490110 Title: package lxc 1.1.3-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 100 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1490110/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
