The dpkg --configure -a and apt-get -f install dance brought me to
this point:
$ sudo dpkg --configure -a
dpkg: dependency problems prevent configuration of rhythmbox-plugins:
rhythmbox-plugins depends on python3 (>= 3.6~); however:
Version of python3 on system is 3.5.1-3.
dpkg: error processing package rhythmbox-plugins (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libgoa-backend-1.0-1:amd64:
libgoa-backend-1.0-1:amd64 depends on libgoa-1.0-0b (>= 3.25.4); however:
Version of libgoa-1.0-0b:amd64 on system is 3.18.3-1ubuntu2.
dpkg: error processing package libgoa-backend-1.0-1:amd64 (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python3-apt:
gnupg (2.2.4-1ubuntu1) breaks python3-apt (<= 1.1.0~beta4) and is installed.
Version of python3-apt to be configured is 1.1.0~beta1ubuntu0.16.04.1.
dpkg: error processing package python3-apt (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of rhythmbox-plugin-magnatune:
rhythmbox-plugin-magnatune depends on rhythmbox-plugins; however:
Package rhythmbox-plugins is not configured yet.
dpkg: error processing package rhythmbox-plugin-magnatune (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python3-gdbm:amd64:
python3-gdbm:amd64 depends on python3 (>= 3.6.4-1~); however:
Version of python3 on system is 3.5.1-3.
dpkg: error processing package python3-gdbm:amd64 (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of
python3-reportlab-accel:amd64:
python3-reportlab-accel:amd64 depends on python3 (>= 3.6~); however:
Version of python3 on system is 3.5.1-3.
dpkg: error processing package python3-reportlab-accel:amd64 (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python3-cairo:amd64:
python3-cairo:amd64 depends on python3 (>= 3.6~); however:
Version of python3 on system is 3.5.1-3.
dpkg: error processing package python3-cairo:amd64 (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python-apt:
python-apt depends on libapt-inst2.0 (>= 1.4~beta3); however:
Version of libapt-inst2.0:amd64 on system is 1.2.26.
python-apt depends on libapt-pkg5.0 (>= 1.4~beta3); however:
Version of libapt-pkg5.0:amd64 on system is 1.2.26.
dpkg: error processing package python-apt (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of onboard:
onboard depends on python3-cairo; however:
Package python3-cairo:amd64 is not configured yet.
onboard depends on python3 (>= 3.6~); however:
Version of python3 on system is 3.5.1-3.
dpkg: error processing package onboard (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of software-properties-common:
gnupg (2.2.4-1ubuntu1) breaks software-properties-common (<= 0.96.24.3) and is
installed.
Version of software-properties-common to be configured is 0.96.20.7.
dpkg: error processing package software-properties-common (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of unity-control-center:
unity-control-center depends on libgoa-backend-1.0-1 (>= 3.18.0); however:
Package libgoa-backend-1.0-1:amd64 is not configured yet.
dpkg: error processing package unity-control-center (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
rhythmbox-plugins
libgoa-backend-1.0-1:amd64
python3-apt
rhythmbox-plugin-magnatune
python3-gdbm:amd64
python3-reportlab-accel:amd64
python3-cairo:amd64
python-apt
onboard
software-properties-common
unity-control-center
$ sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... failed.
The following packages have unmet dependencies:
gnome-bluetooth : Depends: libpam-systemd but it is not installed
gnome-session : Depends: gnome-settings-daemon (>= 3.0) but it is not installed
gnupg : Breaks: python3-apt (<= 1.1.0~beta4) but 1.1.0~beta1ubuntu0.16.04.1 is
installed
Breaks: software-properties-common (<= 0.96.24.3) but 0.96.20.7 is
installed
libc6-dbg : Depends: libc6 (= 2.23-0ubuntu10) but 2.27-3ubuntu1 is installed
libgoa-1.0-0b : Depends: libgoa-1.0-common (= 3.18.3-1ubuntu2) but
3.28.0-0ubuntu2 is installed
libgoa-backend-1.0-1 : Depends: libgoa-1.0-0b (>= 3.25.4) but 3.18.3-1ubuntu2
is installed
network-manager : Depends: libpam-systemd but it is not installed
onboard : Depends: python3 (>= 3.6~) but 3.5.1-3 is installed
Recommends: onboard-data (>= 1.4.1-2ubuntu1) but 1.2.0-0ubuntu5 is
installed
policykit-1 : Depends: libpam-systemd but it is not installed
pulseaudio : Depends: libpam-systemd but it is not installed
python-apt : Depends: libapt-inst2.0 (>= 1.4~beta3) but 1.2.26 is installed
Depends: libapt-pkg5.0 (>= 1.4~beta3) but 1.2.26 is installed
python3 : PreDepends: python3-minimal (= 3.5.1-3) but 3.6.5-3 is installed
Depends: libpython3-stdlib (= 3.5.1-3) but 3.6.5-3 is installed
python3-cairo : Depends: python3 (>= 3.6~) but 3.5.1-3 is installed
python3-gdbm : Depends: python3 (>= 3.6.4-1~) but 3.5.1-3 is installed
python3-reportlab-accel : Depends: python3 (>= 3.6~) but 3.5.1-3 is installed
rhythmbox-plugins : Depends: python3 (>= 3.6~) but 3.5.1-3 is installed
systemd : Depends: libsystemd0 (= 229-4ubuntu21.2) but 237-3ubuntu10 is
installed
Recommends: libpam-systemd but it is not installed
udisks2 : Depends: libpam-systemd but it is not installed
urfkill : Depends: libpam-systemd but it is not installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by
held packages.
E: Unable to correct dependencies
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https://bugs.launchpad.net/bugs/1768379
Title:
failed 16.04 LTS -> 18.04 LTS upgrade
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