Comment 10 for bug 1571677

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