I installed the version of apt from trusty-proposed as seen in /var/log /dist-upgrade/apt-term.log:
Preparing to unpack .../apt_1.0.9.7ubuntu4.2_amd64.deb ...^M Unpacking apt (1.0.9.7ubuntu4.2) over (1.0.1ubuntu2.11) ...^M Processing triggers for man-db (2.6.7.1-1ubuntu1) ...^M The upgrade from Trusty to Vivid proceeded without error. From /var/log /dist-upgrade/main.log: 2016-01-12 14:22:18,584 DEBUG Finish checking for obsolete pkgs 2016-01-12 14:22:18,614 DEBUG The following packages are marked for removal: friends-twitter libcdr-0.0-0 xserver-xorg-video-neomagic-lts-vivid gir1.2-messagingmenu-1.0 libplist1 libcrypt-passwdmd5-perl libsystemd-login0 libgdata13 xserver-xorg-input-mouse-lts-vivid xserver-xorg-video-sisusb-lts-vivid libgles1-mesa-lts-vivid xserver-xorg-input-synaptics-lts-vivid xserver-xorg-video-nouveau-lts-vivid xserver-xorg-video-all-lts-vivid libmbim-glib0 libexiv2-12 friends-facebook friends xserver-xorg-input-vmmouse-lts-vivid unity-lens-friends xserver-xorg-input-wacom-lts-vivid libboost-date-time1.54.0 libboost-system1.54.0 xserver-xorg-video-radeon-lts-vivid python-notify libmspub-0.0-0 xserver-xorg-video-r128-lts-vivid libwpg-0.2-2 libcolorhug1 xserver-xorg-video-tdfx-lts-vivid python-pexpect qtdeclarative5-privatewidgets-plugin gir1.2-edataserver-1.2 libgnome-desktop-3-7 liborcus-0.6-0 libvte-2.90-9 python-renderpm libsystemd-daemon0 gir1.2-vte-2.90 xserver-xorg-video-mach64-lts-vivid li bvisio-0.0-0 libfriends0 gir1.2-ebook-1.2 libcmis-0.4-4 libprotobuf8 linux-image-extra-3.19.0-25-generic friends-dispatcher linux-image-generic-lts-vivid python-libxml2 linux-image-3.19.0-25-generic libpoppler44 libelfg0 libreoffice-presentation-minimizer python-ibus python-reportlab-accel libthumbnailer0 librtmp0 xserver-xorg-video-siliconmotion-lts-vivid libwnck-common xserver-xorg-video-savage-lts-vivid python-reportlab libvte-2.90-common xserver-xorg-input-all-lts-vivid xserver-xorg-video-vmware-lts-vivid xserver-xorg-video-ati-lts-vivid libparted0debian1 linux-headers-generic-lts-vivid linux-headers-3.19.0-25-generic libgles2-mesa-lts-vivid libcamel-1.2-45 libwps-0.2-2 libwpd-0.9-9 libvncserver0 libgtop2-7 python-gnomekeyring gtk3-engines-unico libgrip0 xserver-xorg-video-intel-lts-vivid libt1-5 libsystemd-journal0 libcolord1 gir1.2-ebookcontacts-1.2 linux-generic-lts-vivid python-gconf libqmi-glib0 xserver-xorg-video-vesa-lts-vivid python-smbc libplymouth2 xserver-xorg-video-t rident-lts-vivid libgnutls26 libwnck22 gir1.2-gconf-2.0 ubuntu-extras-keyring xserver-xorg-video-mga-lts-vivid python-requests qtdeclarative5-ubuntu-ui-extras-browser-plugin-assets libgnome-media-profiles-3.0-0 libraw9 xserver-xorg-video-openchrome-lts-vivid xserver-xorg-video-cirrus-lts-vivid account-plugin-twitter libxatracker2-lts-vivid xserver-xorg-video-fbdev-lts-vivid gir1.2-networkmanager-1.0 libminiupnpc8 linux-headers-3.19.0-25 libqt5webkit5-qmlwebkitplugin libupower-glib1 libqt5sensors5 2016-01-12 14:34:44,786 INFO cache.commit() 2016-01-12 14:34:57,948 DEBUG plugins for condition 'PostCleanup' are '[]' 2016-01-12 14:34:57,948 DEBUG plugins for condition 'vividPostCleanup' are '[]' 2016-01-12 14:34:57,948 DEBUG plugins for condition 'from_trustyPostCleanup' are '[]' 2016-01-12 14:34:57,948 DEBUG quirks: running PostCleanup 2016-01-12 14:34:57,948 DEBUG running Quirks.PostCleanup 2016-01-12 14:34:57,949 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' 2016-01-12 14:35:06,369 DEBUG enabling apt cron job ** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1497688 Title: dmsetup and libdevmapper1.02.1 fail to install, depend on each other Status in apt package in Ubuntu: Invalid Status in apt source package in Trusty: Fix Committed Bug description: Test Case --------- 1) Install Ubuntu 14.04 LTS 2) Ensure /etc/update-manager/release-upgrades says normal 3) Try to upgrade to Vivid (15.04) 4) Observe a failure due to libdevmapper and dmsetup With the version of the package from -proposed the upgrade will complete successfully. Problem occured when I did a distribution upgrade with the "Software Updater" ProblemType: PackageDistroRelease: Ubuntu 15.04 Package: systemd-sysv (not installed) ProcVersionSignature: Ubuntu 3.13.0-61.100-generic 3.13.11-ckt22 Uname: Linux 3.13.0-61-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 Date: Sun Sep 20 08:44:57 2015 DuplicateSignature: package:systemd-sysv:(not installed):pre-dependency problem - not installing systemd-sysv ErrorMessage: pre-dependency problem - not installing systemd-sysv InstallationDate: Installed on 2014-05-18 (490 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)SourcePackage: systemd Title: package systemd-sysv (not installed) failed to install/upgrade: pre-dependency problem - not installing systemd-sysv UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1497688/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

