Comment 20 for bug 1592917

Workaround:

Step 1:
=======

I killed the process with which I was stuck with (kill 20108):

root 20108 0.0 0.0 4508 1624 pts/18 S+ 18:42 0:00 /bin/sh /var/lib/dpkg/info/cups-daemon.postinst configure 1.7.2-0ubuntu1.7

This had the result that the do-release-upgrade script continued to configure all the packages.

At this point, dpkg --configure -a fails because mysql-server cannot be configured (no socket connection)

Step 2: remove autoremovable packages
=====================

apt-get autoremove => mysql-server can be configured after autoremove

  aptitude-common dh-apparmor g++-4.8 gcc-4.9-base:i386 gir1.2-gconf-2.0 java-common kubuntu-debug-installer latex-beamer latex-xcolor libamd2.3.1 libatk-wrapper-java
  libatk-wrapper-java-jni libavcodec54 libavformat54 libavresample1 libavutil52 libbaloocore4 libbaloofiles4 libbalooxapian4 libbit-vector-perl libboost-iostreams1.54.0
  libboost-thread1.54.0 libcamd2.3.1 libcarp-clan-perl libccolamd2.8.0 libcgmanager0:i386 libcholmod2.1.2 libclamav6 libdate-calc-perl libdate-calc-xs-perl libdbd-mysql-perl
  libdbi-perl libdbus-1-3:i386 libdrm2:i386 libegl1-mesa-drivers libept1.4.12 libepub0 libgbm1-lts-wily libgconf2-4 libgegl-0.2-0 libgif4 libgl1-mesa-dri-lts-wily
  libglapi-mesa-lts-wily libgles1-mesa-lts-wily libgles2-mesa-lts-wily libgraphicsmagick3 libicc2 libidl-2-0 libidl-common libilmbase6 libimdi0 libjavascriptcoregtk-1.0-0
  libjson-c2:i386 libkactivities-models1 libkidletime4 libkscreen1 liblinear1 libmagick++5 libmagickcore5 libmagickcore5-extra libmagickwand5 libmrm4 libmusicbrainz5-0
  libnepomukcleaner4 libnepomukcore4abi1 libnih-dbus1:i386 libnih1:i386 libokularcore4 libopenexr6 libopenjpeg2 liborbit2 libpng12-0:i386 libpostproc52 libpth20 libqapt3
  libqapt3-runtime libqjson0 libsctp1 libsoprano4 libstdc++-4.8-dev libswscale2 libterm-readkey-perl libts-0.0-0 libuil4 libumfpack5.6.2 libvirtodbc0 libvte-common libvte9
  libwebkitgtk-1.0-0 libwebkitgtk-1.0-common libwireshark3 libwiretap3 libwsutil3 libwxbase2.8-0 libwxgtk2.8-0 libx264-142 libxatracker2-lts-wily libxen-4.4 libzip2 libzip4
  linux-headers-generic-lts-wily linux-image-generic-lts-wily lksctp-tools nepomuk-core-data odbcinst odbcinst1debian2 perlmagick pgf phonon-backend-gstreamer1.0
  php-symfony2-yaml php5-xdebug python-urlgrabber python-vte qapt-batch shared-desktop-ontologies soprano-daemon syslinux-themes-debian syslinux-themes-debian-wheezy
  texlive-luatex tsconf ttf-dejavu-core virtuoso-minimal virtuoso-opensource-6.1-bin virtuoso-opensource-6.1-common xserver-xorg-core-lts-wily xserver-xorg-input-all-lts-wily
  xserver-xorg-input-evdev-lts-wily xserver-xorg-input-mouse-lts-wily xserver-xorg-input-synaptics-lts-wily xserver-xorg-input-vmmouse-lts-wily
  xserver-xorg-input-wacom-lts-wily xserver-xorg-video-all-lts-wily xserver-xorg-video-ati-lts-wily xserver-xorg-video-cirrus-lts-wily xserver-xorg-video-fbdev-lts-wily
  xserver-xorg-video-intel-lts-wily xserver-xorg-video-mach64-lts-wily xserver-xorg-video-mga-lts-wily xserver-xorg-video-neomagic-lts-wily
  xserver-xorg-video-nouveau-lts-wily xserver-xorg-video-openchrome-lts-wily xserver-xorg-video-qxl-lts-wily xserver-xorg-video-r128-lts-wily
  xserver-xorg-video-radeon-lts-wily xserver-xorg-video-savage-lts-wily xserver-xorg-video-siliconmotion-lts-wily xserver-xorg-video-sisusb-lts-wily
  xserver-xorg-video-tdfx-lts-wily xserver-xorg-video-trident-lts-wily xserver-xorg-video-vesa-lts-wily xserver-xorg-video-vmware-lts-wily

mysql-server is configured automatically at this point. Database is migrated automatically.

dpkg --configure -a does not show any remaining entries

My system looks quite promising again.