I upgrade from Trusty (with the lts-vivid packages installed) to Xenial today and I was able to log into an X desktop. Here's part of my /var/log/dist-upgrade/apt-term.log showing the upgrade:
Unpacking xserver-common (2:1.18.3-1ubuntu2) over (2:1.15.1-0ubuntu2.7) ...^M Preparing to unpack .../xserver-xorg-core-lts-vivid_3%3a9_amd64.deb ...^M Unpacking xserver-xorg-core-lts-vivid (3:9) over (2:1.17.1-0ubuntu3.1~trusty1) ...^M Processing triggers for man-db (2.6.7.1-1ubuntu1) ...^M dpkg: xserver-xorg-lts-vivid: dependency problems, but removing anyway as you requested:^M xorg depends on xserver-xorg (>= 1:7.7+1ubuntu8.1) | xserver-xorg-renamed; however:^M Package xserver-xorg is not installed.^M Package xserver-xorg-renamed is not installed.^M Package xserver-xorg-lts-vivid which provides xserver-xorg-renamed is to be removed.^M xorg depends on xserver-xorg (>= 1:7.7+1ubuntu8.1) | xserver-xorg-renamed; however:^M Package xserver-xorg is not installed.^M Package xserver-xorg-renamed is not installed.^M Package xserver-xorg-lts-vivid which provides xserver-xorg-renamed is to be removed.^M ^M (Reading database ... ^M(Reading database ... 5%^M(Reading database ... 10%^M(Reading database ... 15%^M(Reading database ... 20%^M(Reading database ... 25%^M(Reading database ... 30%^M(Reading database ... 35%^M(Reading database ... 40%^M(Reading database ... 45%^M(Reading database ... 50%^M(Reading database ... 55%^M(Reading database ... 60%^M(Reading database ... 65%^M(Reading database ... 70%^M(Reading database ... 75%^M(Reading database ... 80%^M(Reading database ... 85%^M(Reading database ... 90%^M(Reading database ... 95%^M(Reading database ... 100%^M(Reading database ... 263590 files and directories currently installed.)^M Removing xserver-xorg-lts-vivid (1:7.7+7ubuntu3~trusty1) ...^M Selecting previously unselected package xserver-xorg-core.^M (Reading database ... ^M(Reading database ... 5%^M(Reading database ... 10%^M(Reading database ... 15%^M(Reading database ... 20%^M(Reading database ... 25%^M(Reading database ... 30%^M(Reading database ... 35%^M(Reading database ... 40%^M(Reading database ... 45%^M(Reading database ... 50%^M(Reading database ... 55%^M(Reading database ... 60%^M(Reading database ... 65%^M(Reading database ... 70%^M(Reading database ... 75%^M(Reading database ... 80%^M(Reading database ... 85%^M(Reading database ... 90%^M(Reading database ... 95%^M(Reading database ... 100%^M(Reading database ... 263581 files and directories currently installed.)^M Preparing to unpack .../xserver-xorg-core_2%3a1.18.3-1ubuntu2_amd64.deb ...^M Unpacking xserver-xorg-core (2:1.18.3-1ubuntu2) ...^M Selecting previously unselected package xserver-xorg.^M Preparing to unpack .../xserver-xorg_1%3a7.7+13ubuntu3_amd64.deb ...^M Unpacking xserver-xorg (1:7.7+13ubuntu3) ...^M Selecting previously unselected package xserver-xorg-lts-vivid.^M Preparing to unpack .../xserver-xorg-lts-vivid_3%3a9_amd64.deb ...^M Unpacking xserver-xorg-lts-vivid (3:9) ...^M -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1571677 Title: upgrading caused a broken apt cache due to *-lts-vivid packages conflicting with current X packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-lts-transitional/+bug/1571677/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs