I repeated this today with Ubuntu GNOME i386 and indeed the GUI part of things is fixed. Still failed though just as you said the first error reported was:
dpkg: error processing package fontconfig (--configure): subprocess installed post-installation script returned error exit status 1 But the process continued for quite a while then finally offered to file a bug report but the upgrade was still running so I waited, then finally a warning showed saying: Could not install the upgrades The upgrade has aborted. Your system could be in an unusable state. A recovery will run now (dpkg --configure -a). After clicking on Close dpkg ran for quite a while and then finally came the black screen. Nothing was responsive so I forced a reboot and not surprisingly it fails to boot now. I didn't mess around trying to recover this time though so the logs are much simpler to attach. I'll begin that now. There are six in total I'll attach the 1st here. ** Attachment added: "apt.log" https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1549067/+attachment/4580252/+files/apt.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1549067 Title: Ubuntu GNOME Trusty to Xenial release upgrade fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1549067/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
