For those who have not distro upgraded lately, I attempted to distro upgrade yesterday and processing triggers for dbus appeared to hang. I ended up having to reboot my machine after waiting over 2 hours. I then attempted to distro upgrade again and received an error message about a dpkg issue, with a command to remedy the issue. Sorry, I didn't note the issue or the command to use.
Following are the packages that were upgraded:
apt apt-utils desktop-file-utils dmidecode dpkg dpkg-dev evince evince-common
exo-utils firebird3.0-common firebird3.0-common-doc firebird3.0-server-core
firebird3.0-utils gettext gettext-base gir1.2-soup-2.4 gnucash gnucash-common
gnuplot-data gnuplot-x11 libapt-inst2.0 libapt-pkg5.0 libdpkg-perl
libevdocument3-4 libevview3-3 libexo-1-0 libexo-2-0 libexo-common libexo-helpers
libfbclient2 libgpgme11 libgpgmepp6 libib-util libisofs6 liblightdm-gobject-1-0
libopenal-data libopenal1 libopenal1:i386 libopenmpi3 libqmi-glib5 libqmi-proxy
libruby2.5 libsoup-gnome2.4-1 libsoup2.4-1 libyajl2 lightdm openmpi-bin
openmpi-common python3-gnucash ruby2.5 winetricks xsane xsane-common
53 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 38.7 MB of archives.
After this operation, 996 kB disk space will be freed.
Following is where the upgrade process appeared to hang when processing triggers for dbus:
Setting up libapt-inst2.0:amd64 (1.7.0) ...
Setting up firebird3.0-common-doc (3.0.4.33055.ds4-2) ...
Setting up libruby2.5:amd64 (2.5.1-6) ...
Setting up libopenmpi3:amd64 (3.1.2-6) ...
Processing triggers for mime-support (3.61) ...
Setting up xsane-common (0.999-6) ...
Setting up desktop-file-utils (0.23-4) ...
Setting up dmidecode (3.2-1) ...
Setting up apt-utils (1.7.0) ...
Processing triggers for install-info (6.5.0.dfsg.1-4) ...
Processing triggers for libglib2.0-0:i386 (2.58.1-2) ...
Processing triggers for libglib2.0-0:amd64 (2.58.1-2) ...
Setting up libsoup2.4-1:amd64 (2.64.1-2) ...
Setting up libevdocument3-4:amd64 (3.30.1-1) ...
Setting up libdpkg-perl (1.19.2) ...
Setting up firebird3.0-common (3.0.4.33055.ds4-2) ...
Setting up libfbclient2:amd64 (3.0.4.33055.ds4-2) ...
Setting up gettext-base (0.19.8.1-8) ...
Setting up libsoup-gnome2.4-1:amd64 (2.64.1-2) ...
Setting up libqmi-glib5:amd64 (1.20.0-1.1) ...
Setting up libqmi-proxy (1.20.0-1.1) ...
Setting up winetricks (0.0+20180815-1) ...
Setting up gnuplot-data (5.2.5+dfsg1-1) ...
Setting up gir1.2-soup-2.4:amd64 (2.64.1-2) ...
Setting up evince-common (3.30.1-1) ...
Setting up libopenal-data (1:1.19.0-2) ...
Setting up libgpgme11:amd64 (1.11.1-1.1) ...
Setting up libexo-common (0.12.2-2) ...
Setting up libyajl2:amd64 (2.1.0-3) ...
Setting up dpkg-dev (1.19.2) ...
Setting up libib-util:amd64 (3.0.4.33055.ds4-2) ...
Setting up python3-gnucash (1:3.3-2) ...
Setting up openmpi-common (3.1.2-6) ...
Processing triggers for libc-bin (2.27-6) ...
Setting up libevview3-3:amd64 (3.30.1-1) ...
Setting up gnuplot-x11 (5.2.5+dfsg1-1) ...
Processing triggers for systemd (239-10) ...
Setting up lightdm (1.26.0-3) ...
Installing new version of config file /etc/lightdm/users.conf ...
Setting up firebird3.0-server-core:amd64 (3.0.4.33055.ds4-2) ...
Setting up gnucash-common (1:3.3-2) ...
Setting up liblightdm-gobject-1-0:amd64 (1.26.0-3) ...
Processing triggers for man-db (2.8.4-2) ...
Setting up libopenal1:amd64 (1:1.19.0-2) ...
Setting up libopenal1:i386 (1:1.19.0-2) ...
Setting up libisofs6:amd64 (1.5.0-1) ...
Processing triggers for dbus (1.12.10-1) ...
Progress: [ 88%] [######################################################........]